Works (109)

Updated: April 2nd, 2025 10:06

2025 journal article

Dilatancy and its coupling to the kinematics in sheared granular media

JOURNAL OF FLUID MECHANICS, 1003.

By: G. Vatsa*, F. Fazelpour n, R. Gautam*, K. Daniels n & P. Nott*

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Geotechnical and Geomechanical Engineering; Particle Dynamics in Fluid Flows
Sources: ORCID, Web Of Science, Crossref, NC State University Libraries
Added: January 17, 2025

2024 journal article

topics (OpenAlex): Geology and Paleoclimatology Research; Landslides and related hazards; Aeolian processes and effects
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Sources: ORCID, Web Of Science, Crossref, NC State University Libraries
Added: July 22, 2024

2024 journal article

The Role of Electrochemical Oxidation on the Interfacial Tension of Eutectic Gallium Indium

ACS Electrochemistry, 1(1), 103–114.

By: S. Rashid-Nadimi n, V. Okatenko*, M. Song n, Y. Shetty n, A. Bachmann n, N. Mehrabian n, K. Hillaire n, P. Nithyanandam n ...

topics (OpenAlex): Nanowire Synthesis and Applications; Semiconductor materials and devices; Silicon Nanostructures and Photoluminescence
Sources: ORCID, Crossref, NC State University Libraries
Added: October 25, 2024

2023 article

Controlling rheology via boundary conditions in dense granular flows

Fazelpour, F., & Daniels, K. E. (2023, February 17). SOFT MATTER, Vol. 2.

By: F. Fazelpour n & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Particle Dynamics in Fluid Flows
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11. Sustainable Cities and Communities (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: March 4, 2023

2023 journal article

Forecasting landslides using community detection on geophysical satellite data

Physical Review E, 108(1).

By: V. Desai n, F. Fazelpour n, A. Handwerger n & K. Daniels n

topics (OpenAlex): Landslides and related hazards; Cryospheric studies and observations; Fire effects on ecosystems
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13. Climate Action (Web of Science)
Sources: ORCID, Crossref, Web Of Science, NC State University Libraries
Added: July 7, 2023

2023 journal article

Interfacial Tension Hysteresis of Eutectic Gallium‐Indium

Advanced Functional Materials, 34(31).

By: K. Hillaire n, P. Nithyanandam n, M. Song n, S. Nadimi n, A. Kiani n, M. Dickey n, K. Daniels n

author keywords: interfacial tension; liquid metal; oxidation
topics (OpenAlex): ZnO doping and properties; Electronic and Structural Properties of Oxides; Semiconductor materials and devices
Sources: ORCID, Web Of Science, Crossref, NC State University Libraries
Added: December 15, 2023

2022 journal article

Delicate memory structure of origami switches

Physical Review Research, 4(1).

topics (OpenAlex): Advanced Materials and Mechanics; Advanced Sensor and Energy Harvesting Materials; Cellular Mechanics and Interactions
Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 24, 2022

2022 journal article

Gardner-like crossover from variable to persistent force contacts in granular crystals

Physical Review E, 106(5).

By: L. Kool n, P. Charbonneau* & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Force Microscopy Techniques and Applications; Material Dynamics and Properties
Sources: ORCID, Web Of Science, NC State University Libraries
Added: November 21, 2022

2022 report

Gardner-like transition from variable to persistent force contacts in granular crystals

[Preprint].

By: L. Kool, P. Charbonneau & K. Daniels*

topics (OpenAlex): Force Microscopy Techniques and Applications; Mechanical and Optical Resonators; Adhesion, Friction, and Surface Interactions
Source: Crossref
Added: December 19, 2022

2022 journal article

Photoelastic stress response of complex 3D-printed particle shapes

POWDER TECHNOLOGY, 409.

By: N. Amini, J. Tuohey, J. Long, J. Zhang, D. Morton, K. Daniels*, F. Fazelpour*, K. Hapgood

topics (OpenAlex): Electrical and Bioimpedance Tomography
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 27, 2022

2022 journal article

Stick-Slip Dynamics in a Granular Material With Varying Grain Angularity

Frontiers in Physics, 10.

By: R. Kozlowski*, H. Zheng*, K. Daniels n & J. Socolar*

author keywords: granular materials; stick-slip; grain shape; photoelasticity; grain angularity; dynamics; stress
topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Geology and Paleoclimatology Research
Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022

2022 journal article

The effect of grain shape and material on the nonlocal rheology of dense granular flows

Soft Matter, 1.

By: F. Fazelpour n, Z. Tang n & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Rock Mechanics and Modeling
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 27, 2022

2021 journal article

Interfacial Tension Modulation of Liquid Metal via Electrochemical Oxidation

Advanced Intelligent Systems, 3(8), 2100024.

author keywords: eutectic gallium indium; electrochemical oxidation; gallium; liquid metals; surface tension
topics (OpenAlex): Semiconductor materials and devices; Analytical Chemistry and Sensors; Electronic and Structural Properties of Oxides
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Sources: ORCID, Crossref, NC State University Libraries
Added: May 14, 2021

2021 journal article

Particle dynamics in two-dimensional point-loaded granular media composed of circular or pentagonal grains

EPJ Web of Conferences, 249, 06010.

By: R. Kozlowski*, H. Zheng*, K. Daniels n & J. Socolar*

Ed(s): M. Aguirre, S. Luding, L. Pugnaloni & R. Soto

topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Pickering emulsions and particle stabilization
Sources: Crossref, NC State University Libraries
Added: September 21, 2022

2021 journal article

Probing regolith-covered surfaces in low gravity

EPJ Web of Conferences, 249, 02005.

By: J. Kollmer n, J. Featherstone n, R. Bullard n, T. Emm n, A. Jackson n, R. Reid n, S. Shefferman*, A. Dove*, J. Colwell*, K. Daniels n

Ed(s): M. Aguirre, S. Luding, L. Pugnaloni & R. Soto

topics (OpenAlex): Planetary Science and Exploration; Astro and Planetary Science; Space Satellite Systems and Control
Sources: Crossref, NC State University Libraries
Added: September 21, 2022

2021 journal article

Spongelike Rigid Structures in Frictional Granular Packings

Physical Review Letters, 126(7).

By: K. Liu*, J. Kollmer n, K. Daniels n, J. Schwarz* & S. Henkes*

topics (OpenAlex): Granular flow and fluidized beds; Adhesion, Friction, and Surface Interactions; Material Dynamics and Properties
TL;DR: It is shown how rigidity emerges in experiments on sheared two-dimensional frictional granular materials by using generalizations of two methods for identifying rigid structures, the force-based dynamical matrix and the topology-based rigidity percolation. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: February 23, 2021

2021 journal article

Stick-slip Dynamics in Penetration Experiments on Simulated Regolith

The Planetary Science Journal, 2(6), 243.

By: J. Featherstone n, R. Bullard n, T. Emm n, A. Jackson n, R. Reid n, S. Shefferman*, A. Dove*, J. Colwell*, J. Kollmer n, K. Daniels n

topics (OpenAlex): Planetary Science and Exploration; Granular flow and fluidized beds; High-Velocity Impact and Material Behavior
Sources: ORCID, Crossref, NC State University Libraries
Added: December 23, 2021

2021 journal article

Stress propagation in locally loaded packings of disks and pentagons

Soft Matter, 10.

By: R. Kozlowski*, H. Zheng*, K. Daniels n & J. Socolar*

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Geotechnical Engineering and Soil Mechanics
Sources: ORCID, Web Of Science, NC State University Libraries
Added: November 3, 2021

2021 journal article

The effect of boundary roughness on dense granular flows

EPJ Web of Conferences, 249, 03014.

By: F. Fazelpour n & K. Daniels n

Ed(s): M. Aguirre, S. Luding, L. Pugnaloni & R. Soto

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Particle Dynamics in Fluid Flows
Sources: Crossref, NC State University Libraries
Added: August 25, 2023

2020 journal article

Analysis of Self-Organized Patterned Surface Oxide Spots on Ejected Spatter Produced during Laser Powder Bed Fusion

Additive Manufacturing, 35, 101320.

By: C. Rock n, R. Vadlakonda n, S. Figurskey n, C. Ledford n, H. West n, V. Miller*, M. Pankow n, K. Daniels n, T. Horn n

topics (OpenAlex): Additive Manufacturing Materials and Processes; Additive Manufacturing and 3D Printing Technologies; Laser Material Processing Techniques
Sources: Web Of Science, ORCID, NC State University Libraries
Added: October 26, 2020

2020 journal article

Gradient-induced droplet motion over soft solids

IMA Journal of Applied Mathematics, 85(3), 495–512.

By: A. Bardall n, S. Chen n, K. Daniels n & M. Shearer n

topics (OpenAlex): Surface Modification and Superhydrophobicity; Micro and Nano Robotics; Fluid Dynamics and Heat Transfer
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: June 22, 2020

2020 journal article

Knitting Ripples

Patterns, 1(2), 100034.

By: K. Daniels n & M. Elting n

Contributors: M. Elting n

topics (OpenAlex): Advanced Materials and Mechanics; Textile materials and evaluations; Interactive and Immersive Displays
TL;DR: Two knitting patterns for scarves are presented to illustrate how ripples can arise through adding stitches to the material as it is created. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: May 16, 2020

2020 journal article

Overcoming Rayleigh–Plateau instabilities: Stabilizing and destabilizing liquid-metal streams via electrochemical oxidation

Proceedings of the National Academy of Sciences, 117(32), 19026–19032.

author keywords: liquid metal; Rayleigh instabilities; EGaIn; jetting; jets
topics (OpenAlex): Electrohydrodynamics and Fluid Dynamics; Innovative Microfluidic and Catalytic Techniques Innovation; Fluid Dynamics and Thin Films
TL;DR: Electrochemical anodization significantly lowers the effective tension of a stream of metal, transitioning it from droplets to long (long lifetime and length) wires with 100-μm diameters without the need for high velocities. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: July 30, 2020

2019 journal article

A Dual-Species Biofilm with Emergent Mechanical and Protective Properties

Journal of Bacteriology, 201(18).

Ed(s): G. O'Toole

MeSH headings : Bacillus subtilis / metabolism; Bacterial Proteins / metabolism; Biofilms / growth & development; Extracellular Matrix / metabolism; Extracellular Matrix / physiology; Pantoea / metabolism
topics (OpenAlex): Bacterial biofilms and quorum sensing; Polymer Surface Interaction Studies; Marine Biology and Environmental Chemistry
TL;DR: It is determined that both bacteria contribute structural elements to the coculture, which is reflected in its overall viscoelastic behavior, and that partitioning into distinct regions negatively affected the survival of P. agglomerans while also serving as a protective mechanism in the presence of antibiotic stress. (via Semantic Scholar)
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15. Life on Land (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: August 13, 2019

2019 journal article

Betweenness centrality as predictor for forces in granular packings

Soft Matter, 15(8), 1793–1798.

By: J. Kollmer n & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds
TL;DR: It is found that total pressure on each particle in the system correlates to its betweenness centrality value extracted from the geometric contact network, and the mesoscale network structure is a key control on individual particle pressures. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 29, 2019

2019 journal article

Distinguishing deformation mechanisms in elastocapillary experiments

Soft Matter, 15(46), 9426–9436.

By: S. Chen n, A. Bardall n, M. Shearer n & K. Daniels n

topics (OpenAlex): Surface Modification and Superhydrophobicity; Microfluidic and Capillary Electrophoresis Applications; Microfluidic and Bio-sensing Technologies
TL;DR: This paper derives a model capable of explaining the observed data and uses it to determine the force law at the three-phase contact line, and shows that the measured forces are consistent with the expected Young-Dupré equation. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: November 20, 2019

2019 journal article

Dynamics of a grain-scale intruder in a two-dimensional granular medium with and without basal friction

Physical Review E, 100(3).

topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Sports Dynamics and Biomechanics
TL;DR: The results indicate the qualitative importance of basal friction at high packing fractions and suggest a possible connection between intruder dynamics in a static material and clogging dynamics in granular flows. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: October 14, 2019

2019 journal article

Enlightening force chains: a review of photoelasticimetry in granular matter

Granular Matter, 21(4).

By: A. Zadeh*, J. Bares, T. Brzinski*, K. Daniels n, J. Dijksman*, N. Docquier*, H. Everitt*, J. Kollmer* ...

topics (OpenAlex): Seismic Waves and Analysis; Landslides and related hazards; Adhesion, Friction, and Surface Interactions
Sources: Web Of Science, NC State University Libraries
Added: September 9, 2019

2019 journal article

Force fluctuations at the transition from quasi-static to inertial granular flow

Soft Matter, 15(42), 8532–8542.

By: A. Thomas*, Z. Tang n, K. Daniels n & N. Vriend*

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Sports Dynamics and Biomechanics
TL;DR: The rheology of gravity-driven, dry granular flows is analysed in experiments where individual forces within the flow bulk are measured and rearrangements of the force network extending into the quasi-static layer where shear rates vanish are observed. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: October 29, 2019

2019 journal article

Forecasting failure locations in 2-dimensional disordered lattices

Proceedings of the National Academy of Sciences, 116(34), 16742–16749.

By: E. Berthier n, M. Porter* & K. Daniels n

author keywords: failure; lattices; networks; centrality
topics (OpenAlex): Complex Network Analysis Techniques; Theoretical and Computational Physics; Data Visualization and Analytics
TL;DR: It is shown that a simple test that consists of comparing the importance of a beam with respect to the other beams in a lattice permits a successful forecast of the locations of failures, and that one can assess possible failure locations of a structure without needing to study its detailed energetic states. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: August 4, 2019

2019 journal article

Protocol Dependence and State Variables in the Force-Moment Ensemble

Physical Review Letters, 122(3).

By: E. Bililign n, J. Kollmer n & K. Daniels n

topics (OpenAlex): Material Dynamics and Properties; Granular flow and fluidized beds; High-pressure geophysics and materials
TL;DR: From the interparticle forces, it is found that the distributions of the normal component of the coarse-grained force-moment tensor are exponential tailed, while the deviatoric component is Gaussian distributed, which implies that the correct stress-based statistical mechanics conserves both the force- Moment tensor and the Maxwell-Cremona force-tiling area. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 30, 2019

2019 journal article

Rigidity percolation control of the brittle-ductile transition in disordered networks

Physical Review Materials, 3(7).

topics (OpenAlex): Material Dynamics and Properties; Theoretical and Computational Physics; Pickering emulsions and particle stabilization
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 5, 2019

2019 journal article

Viewing Earth’s surface as a soft-matter landscape

Nature Reviews Physics, 1(12), 716–730.

By: D. Jerolmack* & K. Daniels n

topics (OpenAlex): Geology and Paleoclimatology Research; Geological formations and processes; Aeolian processes and effects
Sources: ORCID, Crossref, NC State University Libraries
Added: October 17, 2019

2018 journal article

Network analysis of particles and grains

Journal of Complex Networks, 6(4), 485–565.

topics (OpenAlex): Complex Network Analysis Techniques; Plant and Biological Electrophysiology Studies; Geology and Paleoclimatology Research
TL;DR: Network-based approaches to studying granular materials (and particulate matter more generally) are reviewed and the potential of such frameworks to provide a useful description of these materials is explored to enhance understanding of the underlying physics is explored. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: October 29, 2018

2018 journal article

Nonlocal rheology of dense granular flow in annular shear experiments

SOFT MATTER, 14(16), 3040–3048.

By: Z. Tang n, T. Brzinski*, M. Shearer n & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Mineral Processing and Grinding
TL;DR: The authors' measurements confirm the prediction that there is a growing lengthscale at a finite value μs, associated with a frictional yield criterion and identify the physical mechanism behind this transition at μs by observing that it corresponds to a drop in the susceptibility to force chain fluctuations. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2018 journal article

Sounds of Failure: Passive Acoustic Measurements of Excited Vibrational Modes

PHYSICAL REVIEW LETTERS, 120(21).

By: T. Brzinski n & K. Daniels n

topics (OpenAlex): Acoustic Wave Phenomena Research; Vehicle Noise and Vibration Control; Aerodynamics and Acoustics in Jet Flows
TL;DR: Experiments on sheared granular materials are reported in which the evolving density of excited modes are monitored via passive monitoring of acoustic emissions, providing a new interpretation of the changing state of the material on its approach to stick-slip failure. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 journal article

Symmetry-reversals in chiral active matter

SOFT MATTER, 14(27), 5572–5580.

topics (OpenAlex): Micro and Nano Robotics; Astro and Planetary Science; Granular flow and fluidized beds
TL;DR: The findings highlight the important role of both the type of driving and the interparticle interactions (here, geometric friction) in controlling the collective behavior of active granular systems. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

An experimental investigation of the force network ensemble

EPJ Web of Conferences, 140, 02024.

By: J. Kollmer n & K. Daniels n

Ed(s): F. Radjai, S. Nezamabadi, S. Luding & J. Delenne

topics (OpenAlex): Granular flow and fluidized beds; Sports Dynamics and Biomechanics; Material Dynamics and Properties
TL;DR: An experiment in which a horizontal quasi-2D granular system with a fixed neighbor network is cyclically compressed and decompressed over 1000 cycles, and several statistical properties of the packing are characterized, including the probability density function of the contact force. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: February 6, 2020

2017 journal article

Capillary fracture of ultrasoft gels: variability and delayed nucleation

SOFT MATTER, 13(16), 2962–2966.

By: M. Grzelka n, J. Bostwick* & K. Daniels n

topics (OpenAlex): Surface Modification and Superhydrophobicity; Pickering emulsions and particle stabilization; Advanced Sensor and Energy Harvesting Materials
TL;DR: The experimental protocol provides a new technique for probing the energy landscape and fracture toughness of ultrasoft materials through measurement of the delay time distribution, consistent with a thermally-activated process. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Deformation of an elastic substrate due to a resting sessile droplet

European Journal of Applied Mathematics, 29(2), 281–300.

By: A. Bardall*, K. Daniels* & M. Shearer*

author keywords: PDEs in Connection with Mechanics of Deformable Solids; Transform Methods; Classical Linear Elasticity; Numerical Approximation of Solutions; Fluid-Solid Interactions
topics (OpenAlex): Surface Modification and Superhydrophobicity; Advanced Sensor and Energy Harvesting Materials; Nanomaterials and Printing Technologies
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2017 journal article

Granular rheology: measuring boundary forces with laser-cut leaf springs

EPJ Web of Conferences, 140, 03035.

By: Z. Tang n, T. Brzinski n & K. Daniels n

Ed(s): F. Radjai, S. Nezamabadi, S. Luding & J. Delenne

topics (OpenAlex): Granular flow and fluidized beds; Mineral Processing and Grinding; Tunneling and Rock Mechanics
Sources: Crossref, NC State University Libraries
Added: February 6, 2020

2017 journal article

Oxidation-Mediated Fingering in Liquid Metals

PHYSICAL REVIEW LETTERS, 119(17).

By: C. Eaker n, D. Hight n, . John D. O'Regan, M. Dickey n & K. Daniels n

topics (OpenAlex): Adhesion, Friction, and Surface Interactions; Surface Modification and Superhydrophobicity; Nanomaterials and Printing Technologies
TL;DR: It is found that electrochemical oxidation can generate compressive interfacial forces that oppose the tensile forces at a liquid interface, which is important for the development of reconfigurable electronic, electromagnetic, and optical devices that take advantage of the metallic properties of liquid metals. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2017 journal article

Photoelastic force measurements in granular materials

REVIEW OF SCIENTIFIC INSTRUMENTS, 88(5).

By: K. Daniels n, J. Kollmer n & J. Puckett*

topics (OpenAlex): Granular flow and fluidized beds; Seismic Waves and Analysis; Geotechnical Engineering and Soil Mechanics
TL;DR: This review paper summarizes the past work using the photoelastic technique, describes the optics underlying the technique, and illustrates how it can be used to quantitatively determine the vector contact forces between particles in a 2D granular system. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Preface: Focus on imaging methods in granular physics

REVIEW OF SCIENTIFIC INSTRUMENTS, 88(5).

topics (OpenAlex): Granular flow and fluidized beds; Seismic Waves and Analysis; Tunneling and Rock Mechanics
TL;DR: This work presents a meta-simulation of the fluid mechanics of response to E-modulus, and shows clear patterns in the response of E. coli to E.coli. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 journal article

Publisher’s Note: “Preface: Focus on imaging methods in granular physics” [Rev. Sci. Instrum. 88, 051701 (2017)]

Review of Scientific Instruments, 88(7), 079901.

topics (OpenAlex): Seismic Imaging and Inversion Techniques; Seismic Waves and Analysis; Geophysical Methods and Applications
Sources: Crossref, NC State University Libraries, ORCID
Added: December 26, 2022

2017 journal article

Simulating surfactant spreading: Influence of a physically motivated equation of state

European Journal of Applied Mathematics, 29(1), 30–54.

By: D. Sinclair*, R. Levy* & K. Daniels n

author keywords: AMS classifications: 35Q35 PDEs in connection with fluid mechanics; 76A20 thin fluid films; 76M12 finite volume methods; 76B45 capillarity (surface tension)
topics (OpenAlex): Fluid Dynamics and Thin Films; Surfactants and Colloidal Systems; Block Copolymer Self-Assembly
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2017 journal article

The role of force networks in granular materials

EPJ Web of Conferences, 140, 01006.

By: K. Daniels n

Ed(s): F. Radjai, S. Nezamabadi, S. Luding & J. Delenne

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Rock Mechanics and Modeling
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2016 conference paper

Digging on Asteroids: A Laboratory Model of Granular Dynamics in Microgravity

Earth and Space 2016. Presented at the 15th Biennial ASCE Conference on Engineering, Science, Construction, and Operations in Challenging Environments.

By: J. Kollmer n, S. Lindauer n & K. Daniels n

topics (OpenAlex): Planetary Science and Exploration; Granular flow and fluidized beds; Astro and Planetary Science
Sources: Crossref, NC State University Libraries
Added: December 26, 2022

2016 journal article

Evolution of network architecture in a granular material under compression

PHYSICAL REVIEW E, 94(3).

topics (OpenAlex): Advanced Neuroimaging Techniques and Applications; Granular flow and fluidized beds
TL;DR: The results discussed throughout this study suggest that these network science techniques may provide a direct way to compare and classify data from systems under different external conditions or with different physical makeup. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Friction and pressure-dependence of force chain communities in granular materials

GRANULAR MATTER, 18(4).

By: Y. Huang n & K. Daniels n

author keywords: Force chains; Network community structure; Numerical simulations; Friction; Pressure
topics (OpenAlex): Complex Network Analysis Techniques; Theoretical and Computational Physics; Material Dynamics and Properties
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UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

High refractive index immersion liquid for superresolution 3D imaging using sapphire-based aplanatic numerical aperture increasing lens optics

APPLIED OPTICS, 55(12), 3165–3169.

By: J. Laskar*, P. Kumar*, S. Herminghaus*, K. Daniels n & M. Schroeter

topics (OpenAlex): Near-Field Optical Microscopy; Optical Coatings and Gratings; Optical Coherence Tomography Applications
TL;DR: Antimony tribromide (SbBr3) salt dissolved in liquid diiodomethane (CH2I2) provides a new high refractive index immersion liquid for optics applications that enables a sapphire-based aNAIL objective that has both high numerical aperture and long working distance, an improvement over commercially available immersion liquids. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Nonaffine deformation under compression and decompression of a flow-stabilized solid

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, 2016(8).

By: C. Ortiz n, R. Riehn n & K. Daniels n

author keywords: Brownian motion; colloidal glasses; elasticity; plasticity
topics (OpenAlex): Geotechnical and Geomechanical Engineering; Rheology and Fluid Dynamics Studies; Elasticity and Wave Propagation
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 article

Solid capillarity: when and how does surface tension deform soft solids?

SOFT MATTER, Vol. 12, pp. 2993–2996.

topics (OpenAlex): Material Dynamics and Properties; Pickering emulsions and particle stabilization; Surface Modification and Superhydrophobicity
TL;DR: Some recent advances in the growing field of solid capillarity are highlighted and key questions for its advancement are posed. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Spatio-temporal patterns in inclined layer convection

JOURNAL OF FLUID MECHANICS, 794, 719–745.

By: P. Subramanian*, O. Brausch*, K. Daniels n, E. Bodenschatz*, T. Schneider* & W. Pesch*

author keywords: Benard convection; nonlinear dynamical systems; pattern formation
topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Plant Water Relations and Carbon Dynamics; Fluid Dynamics and Thin Films
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Topological and geometric measurements of force-chain structure

PHYSICAL REVIEW E, 94(3).

topics (OpenAlex): Complex Network Analysis Techniques; Topological and Geometric Data Analysis; Slime Mold and Myxomycetes Research
TL;DR: A trio of related but fundamentally distinct measurements of the mesoscale structure of force chains in two-dimensional packings are discussed, including a statistic derived using tools from algebraic topology, which together provide a tool set for the analysis of force chain architecture. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Erratum: Influence of network topology on sound propagation in granular materials [Phys. Rev. E86, 041306 (2012)]

Physical Review E, 92(3).

By: D. Bassett, E. Owens, K. Daniels* & M. Porter

topics (OpenAlex): Landslides and related hazards; Music and Audio Processing; Seismic Waves and Analysis
Source: ORCID
Added: January 8, 2019

2015 journal article

Extraction of force-chain network architecture in granular materials using community detection

SOFT MATTER, 11(14), 2731–2744.

MeSH headings : Computer Simulation; Models, Chemical
topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards
TL;DR: By resolving individual force chains, this work quantifies statistical properties of force-chain shape and strength, which are potentially crucial diagnostics of bulk properties (including material stability). (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Spatiotemporal measurement of surfactant distribution on gravity-capillary waves

JOURNAL OF FLUID MECHANICS, 777.

By: S. Strickland n, M. Shearer n & K. Daniels n

author keywords: capillary waves; Faraday waves; waves/free-surface flows
topics (OpenAlex): Ocean Waves and Remote Sensing; Surfactants and Colloidal Systems; Orbital Angular Momentum in Optics
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 article

Surfactant spreading on a thin liquid film: reconciling models and experiments

Swanson, E. R., Strickland, S. L., Shearer, M., & Daniels, K. E. (2015, October). JOURNAL OF ENGINEERING MATHEMATICS, Vol. 94, pp. 63–79.

By: E. Swanson*, S. Strickland n, M. Shearer n & K. Daniels n

author keywords: Experiment; Model; Surfactant; Thin liquid film
topics (OpenAlex): Surfactants and Colloidal Systems; Fluid Dynamics and Thin Films; Fluid Dynamics and Heat Transfer
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

The Statistical Physics of Athermal Materials

Annual Review of Condensed Matter Physics, 6(1), 63–83.

author keywords: granular materials; statistical physics; athermal
topics (OpenAlex): Material Dynamics and Properties; Phase Equilibria and Thermodynamics; Pickering emulsions and particle stabilization
Sources: ORCID, NC State University Libraries, Crossref
Added: January 8, 2019

2014 journal article

Correlations between electrical and mechanical signals during granular stick-slip events

GRANULAR MATTER, 16(2), 217–222.

By: K. Daniels n, C. Bauer* & T. Shinbrot*

author keywords: Sheared granular materials; Stick-slip; Electrical charging
topics (OpenAlex): Granular flow and fluidized beds; Earthquake Detection and Analysis; Landslides and related hazards
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 journal article

Elastocapillary deformations on partially-wetting substrates: rival contact-line models

Soft Matter, 10(37), 7361.

By: J. Bostwick*, M. Shearer n & K. Daniels n

topics (OpenAlex): Surface Modification and Superhydrophobicity; Adhesion, Friction, and Surface Interactions; Advanced Sensor and Energy Harvesting Materials
TL;DR: A general solution using a displacement potential function for the elastic deformations within a finite elastic substrate associated with these wetting forces, and compares the results to relevant experiments and concludes that the generalization of solid surface tension Σls ≠ Σsg is an essential feature in any model of partial-wetting. (via Semantic Scholar)
Sources: ORCID, NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2014 journal article

Nonlinear elasticity of microsphere heaps

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, 90(2), 9.

By: C. Ortiz n, K. Daniels n & R. Riehn n

Contributors: C. Ortiz n, K. Daniels n & R. Riehn n

MeSH headings : Elasticity; Microfluidic Analytical Techniques; Microscopy, Fluorescence; Microspheres; Models, Theoretical; Nonlinear Dynamics
topics (OpenAlex): Advanced Materials and Mechanics; Material Dynamics and Properties; Pickering emulsions and particle stabilization
TL;DR: This analysis indicates that many-body interactions contribute a significant fraction of the stress supported by the heap, and the measured stress-strain curves exhibit a universal nonlinear shape, which can be predicted from a thermal van der Waals equation of state with excluded volume. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
10. Reduced Inequalities (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 journal article

Pushing on a Nonlinear Material

Physics, 7.

By: K. Daniels n

topics (OpenAlex): Material Dynamics and Properties; Granular flow and fluidized beds; Advanced Thermodynamics and Statistical Mechanics
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2014 journal article

Self-healing dynamics of surfactant coatings on thin viscous films

Physics of Fluids, 26(4), 042109.

By: S. Strickland n, M. Hin n, M. Sayanagi n, C. Gaebler n, K. Daniels n & R. Levy n

topics (OpenAlex): Fluid Dynamics and Thin Films; Surfactants and Colloidal Systems; Fluid Dynamics and Heat Transfer
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2014 conference paper

Video: Spatiotemporal dynamics of surfactant monolayers on Faraday waves

67th Annual Meeting of the APS Division of Fluid Dynamics - Gallery of Fluid Motion.

By: S. Strickland, M. Shearer & K. Daniels*

topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Electrowetting and Microfluidic Technologies; Quantum optics and atomic interactions
Source: ORCID
Added: January 8, 2019

2013 journal article

Acoustic measurement of a granular density of modes

SOFT MATTER, 9(4), 1214–1219.

By: E. Owens n & K. Daniels n

Contributors: E. Owens n & K. Daniels n

topics (OpenAlex): Material Dynamics and Properties; Granular flow and fluidized beds; Theoretical and Computational Physics
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Capillary fracture of soft gels

PHYSICAL REVIEW E, 88(4).

By: J. Bostwick n & K. Daniels n

MeSH headings : Gels; Hydrodynamics; Mechanical Phenomena; Surface Tension; Surface-Active Agents / chemistry
topics (OpenAlex): Sports Dynamics and Biomechanics; Computer Graphics and Visualization Techniques; Surface Modification and Superhydrophobicity
TL;DR: A model for crack initiation by treating the gel as a linear elastic solid and computing the deformations within the substrate from the liquid-solid wetting forces is developed and reveals that the depth of the gel is an important factor in the fracture process, as it can help mitigate large surface tractions. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Equilibrating Temperaturelike Variables in Jammed Granular Subsystems

PHYSICAL REVIEW LETTERS, 110(5).

By: J. Puckett n & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Heat and Mass Transfer in Porous Media
TL;DR: By comparing the temperaturelike quantities in both systems, it is found compactivity does not equilibrate between the systems, while the angoricity (conjugate to the stress) does. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Flow-driven formation of solid-like microsphere heaps

SOFT MATTER, 9(2), 543–549.

By: C. Ortiz n, R. Riehn n & K. Daniels n

Contributors: C. Ortiz n, R. Riehn n & K. Daniels n

topics (OpenAlex): Pickering emulsions and particle stabilization; Microfluidic and Bio-sensing Technologies; Microfluidic and Capillary Electrophoresis Applications
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 article

Focus on granular segregation

Daniels, K. E., & Schroeter, M. (2013, March 13). NEW JOURNAL OF PHYSICS, Vol. 15.

By: K. Daniels n & M. Schroeter

topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Pickering emulsions and particle stabilization
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Local properties of patterned vegetation: quantifying endogenous and exogenous effects

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 371(2004), 20120359–20120359.

By: G. Penny*, K. Daniels n & S. Thompson*

author keywords: arid ecosystems; pattern formation; Fourier analysis
MeSH headings : Ecosystem; Models, Biological; Plants; Soil; Water
topics (OpenAlex): Ecosystem dynamics and resilience; Ecology and Vegetation Dynamics Studies; Land Use and Ecosystem Services
TL;DR: A Fourier method is developed for locally identifying the pattern wavenumber and orientation from a region of vegetation patterning near Fort Stockton, TX, USA, and it is found that the local pattern wavelength and orientation are typically coherent, but exhibit both rapid and gradual variation driven by changes in hillslope gradient and orientation. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 chapter

Rubble-Pile Near Earth Objects: Insights from Granular Physics

In Asteroids (pp. 271–286).

By: K. Daniels n

Contributors: K. Daniels n

topics (OpenAlex): Planetary Science and Exploration; Astro and Planetary Science; Granular flow and fluidized beds
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2012 journal article

Equipartition of Rotational and Translational Energy in a Dense Granular Gas

PHYSICAL REVIEW LETTERS, 108(1).

By: K. Nichol* & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Particle Dynamics in Fluid Flows; Material Dynamics and Properties
TL;DR: Experiments quantifying the rotational and translational motion of particles in a dense, driven, 2D granular gas floating on an air table reveal that kinetic energy is divided equally between the two translational and one rotational degrees of freedom. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2012 journal article

Influence of network topology on sound propagation in granular materials

PHYSICAL REVIEW E, 86(4).

By: D. Bassett*, E. Owens n, K. Daniels n & M. Porter*

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Music Technology and Sound Studies
TL;DR: This paper treats granular materials as spatially embedded networks in which the nodes (particles) are connected by weighted edges obtained from contact forces and finds that network diagnostics can be used to probe particle-, curve-, domain-, and system-scale structures in granular media. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2012 journal article

Trajectory entanglement in dense granular materials

Journal of Statistical Mechanics-Theory and Experiment, 2012(06), 13.

By: J. Puckett n, F. Lechenault*, K. Daniels n & J. Thiffeault*

Contributors: J. Puckett n, F. Lechenault*, K. Daniels n & J. Thiffeault*

author keywords: granular matter; mixing; dynamical heterogeneities (experiment)
topics (OpenAlex): Material Dynamics and Properties; Theoretical and Computational Physics; Quantum, superfluid, helium dynamics
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2011 journal article

Granular Controls on Periodicity of Stick-Slip Events: Kinematics and Force-Chains in an Experimental Fault

PURE AND APPLIED GEOPHYSICS, 168(12), 2239–2257.

By: N. Hayman*, L. Ducloue*, K. Foco n & K. Daniels n

topics (OpenAlex): earthquake and tectonic studies; Landslides and related hazards; Geology and Paleoclimatology Research
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2011 journal article

Local origins of volume fraction fluctuations in dense granular materials

PHYSICAL REVIEW E, 83(4).

By: J. Puckett n, F. Lechenault n & K. Daniels n

topics (OpenAlex): Material Dynamics and Properties; Granular flow and fluidized beds; High-pressure geophysics and materials
TL;DR: It is found that both P(s) and P(Φ) encode similar information about the ensemble of observed packings and are connected to each other by the local granocentric model. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Sound propagation and force chains in granular materials

Europhysics Letters, 94(5).

By: E. Owens n & K. Daniels n

Contributors: K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Seismic Waves and Analysis; Geotechnical Engineering and Soil Mechanics
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2010 journal article

A Porous Convection Model for Grass Patterns

AMERICAN NATURALIST, 175(1), E10–E15.

By: S. Thompson* & K. Daniels n

Contributors: S. Thompson* & K. Daniels n

author keywords: ecological patterns; thermal convection; soil moisture; chill damage
MeSH headings : Convection; Models, Theoretical; North Carolina; Poaceae / growth & development; Temperature
topics (OpenAlex): Ecosystem dynamics and resilience; Plant Water Relations and Carbon Dynamics; Biocrusts and Microbial Ecology
TL;DR: Results indicate that similarities in pattern morphology should not be interpreted as implying similarities in the pattern‐forming processes, that small‐wavelength vegetation patterns may arise from mechanisms that are distinct from those generating long‐wa wavelength vegetation patterns, and that fluid instabilities should be recognized as a cause of ecological patterns. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2010 journal article

Equilibration of granular subsystems

SOFT MATTER, 6(13), 3074–3081.

By: F. Lechenault n & K. Daniels n

Contributors: F. Lechenault n & K. Daniels n

topics (OpenAlex): Material Dynamics and Properties; Granular flow and fluidized beds; Theoretical and Computational Physics
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2010 journal article

Fluorescent visualization of a spreading surfactant

New Journal of Physics, 12(7), 073029.

By: D. Fallest n, A. Lichtenberger n, C. Fox n & K. Daniels n

topics (OpenAlex): Fluid Dynamics and Thin Films; Surfactants and Colloidal Systems; Fluid Dynamics and Heat Transfer
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2010 journal article

Scalar Conservation Laws with Nonconstant Coefficients with Application to Particle Size Segregation in Granular Flow

Journal of Nonlinear Science, 20(6), 689–707.

By: L. May n, M. Shearer n & K. Daniels n

Contributors: L. May n, M. Shearer n & K. Daniels n

author keywords: Conservation laws; First order partial differential equations; Granular flow; Particle segregation
topics (OpenAlex): Landslides and related hazards; Granular flow and fluidized beds; Soil and Unsaturated Flow
TL;DR: A velocity profile is measured from experimental data and initial value problems that mimic the segregation observed in the experiment are solved, thereby verifying the value of the continuum model. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2010 journal article

Shear-driven size segregation of granular materials: Modeling and experiment

PHYSICAL REVIEW E, 81(5).

By: L. May n, L. Golick n, K. Phillips n, M. Shearer n & K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Landslides and related hazards; Soil and Unsaturated Flow
TL;DR: The Gray-Thornton model of segregation is applied to a granular flow with an exponential shear profile, and the model successfully captures the presence of a fast mixing process and relatively slower resegregation process, but the model predicts a finite resegregation time, while in the experiment resegregation occurs only exponentially in time. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2010 journal article

Student Blogging about Physics

The Physics Teacher, 48(6), 366–367.

By: K. Daniels n

topics (OpenAlex): Experimental Learning in Engineering; Innovative Teaching Methods; Innovations in Educational Methods
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UN Sustainable Development Goal Categories
4. Quality Education (OpenAlex)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2010 article proceedings

The Gray-Thornton Model of Granular Segregation

Presented at the IUTAM-ISIMM SYMPOSIUM ON MATHEMATICAL MODELING AND PHYSICAL INSTANCES OF GRANULAR FLOWS.

By: M. Shearer n, L. May n, N. Giffen n, K. Daniels n, J. Goddard, P. Giovine, J. Jenkins

author keywords: Segregation; granular materials; shock waves; hyperbolic conservation laws
topics (OpenAlex): Landslides and related hazards; Granular flow and fluidized beds; Rock Mechanics and Modeling
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
10. Reduced Inequalities (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2010 journal article

Universal Shapes Formed by Two Interacting Cracks

PHYSICAL REVIEW LETTERS, 105(12).

By: M. Fender n, F. Lechenault n & K. Daniels n

topics (OpenAlex): High-Velocity Impact and Material Behavior; Rock Mechanics and Modeling; Granular flow and fluidized beds
TL;DR: The origins of the widely observed "en passant" crack pattern are investigated, which forms through interactions between two approaching cracks that have a universal square root shape and are understood by using a simple geometric model of the crack-crack interaction. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2009 conference paper

Boundary conditions and event scaling of granular stick-slip events

AIP Conference Proceedings. Presented at the Powders and Grains 2009: Proceedings of the 6th International Conference on Micromechanics of Granular Media.

By: K. Daniels n, N. Hayman n, M. Nakagawa & S. Luding

topics (OpenAlex): Granular flow and fluidized beds; Sports Dynamics and Biomechanics; Landslides and related hazards
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2009 conference paper

Generating ensembles and measuring mixing in a model granular system

AIP Conference Proceedings. Presented at the Powders and Grains 2009: Proceedings of the 6th International Conference on Micromechanics of Granular Media.

By: J. Puckett n, F. Lechenault n, K. Daniels n, M. Nakagawa & S. Luding

topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Protein Structure and Dynamics
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2009 journal article

Generating ensembles of two-dimensional granular configurations

Chaos: An Interdisciplinary Journal of Nonlinear Science, 19(4), 041108.

By: J. Puckett n, F. Lechenault n & K. Daniels n

MeSH headings : Algorithms; Computer Graphics; Computer Simulation; Models, Statistical; Nonlinear Dynamics; Oscillometry / methods; Rheology / methods; User-Computer Interface
topics (OpenAlex): Material Dynamics and Properties; Advanced Combinatorial Mathematics; Liquid Crystal Research Advancements
TL;DR: The braiding of these trajectories offers a more complete description of the system than the diffusion coefficient, as it includes topological information on the motion of grains with respect to their neighbors. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 8, 2019

2009 journal article

Introduction: Sixth Annual Gallery of Nonlinear Images (Pittsburgh, Pennsylvania, 2009)

Chaos: An Interdisciplinary Journal of Nonlinear Science, 19(4), 041101.

By: P. Cvitanović*, K. Daniels n, A. Kudrolli*, W. Losert* & S. Redner*

MeSH headings : Algorithms; Computer Graphics; Computer Simulation; Imaging, Three-Dimensional / methods; Information Storage and Retrieval / methods; Models, Statistical; Nonlinear Dynamics; Oscillometry / methods; Signal Processing, Computer-Assisted
topics (OpenAlex): Photography and Visual Culture
Sources: Crossref, NC State University Libraries
Added: February 6, 2020

2009 journal article

Mixing and segregation rates in sheared granular materials

PHYSICAL REVIEW E, 80(4).

By: L. Golick n & K. Daniels n

author keywords: granular materials; mixing; particle size; percolation; segregation
topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Landslides and related hazards
TL;DR: This work experimentally investigates sheared dense bidisperse granular materials as a function of the size ratio of the two species and finds that the mixing rate at low confining pressure behaves as expected from percolation-based arguments, but observes an anomalous effect for the resegregation rates. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2009 conference paper

Spatiotemporally Resolved Acoustics in a Photoelastic Granular Material

AIP Conference Proceedings, 1145, 447–450.

By: E. Owens n, S. Couvreur n, K. Daniels n, M. Nakagawa & S. Luding

Contributors: K. Daniels n

topics (OpenAlex): Granular flow and fluidized beds; Seismic Waves and Analysis
Sources: Crossref, ORCID, NC State University Libraries
Added: October 29, 2022

2008 journal article

Competition and bistability of ordered undulations and undulation chaos in inclined layer convection

JOURNAL OF FLUID MECHANICS, 597, 261–282.

By: K. Daniels n, O. Brausch*, W. Pesch* & E. Bodenschatz*

topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Theoretical and Computational Physics; Fluid Dynamics and Turbulent Flows
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2008 article

Fluctuations, correlations and transitions in granular materials: statistical mechanics for a non-conventional system

Behringer, R. P., Daniels, K. E., Majmudar, T. S., & Sperl, M. (2008, February 28). PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol. 366, pp. 493–504.

By: R. Behringer*, K. Daniels n, T. Majmudar* & M. Sperl*

author keywords: granular materials; jamming; disordered solids
topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Theoretical and Computational Physics
TL;DR: Results from four representative studies are described, determining local force statistics, vector forces, force distributions and correlations for static granular systems and a dynamical transition where the material ‘freezes’ in the presence of apparent heating for a sheared and shaken system. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2008 journal article

Force chains in seismogenic faults visualized with photoelastic granular shear experiments

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 113(B11).

By: K. Daniels n & N. Hayman*

topics (OpenAlex): earthquake and tectonic studies; High-pressure geophysics and materials; Landslides and related hazards
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2007 journal article

Instabilities in Droplets Spreading on Gels

Physical Review Letters, 99(12), 123501.

topics (OpenAlex): Fluid Dynamics and Heat Transfer; Surface Modification and Superhydrophobicity; Nanomaterials and Printing Technologies
TL;DR: A novel surface-tension driven instability observed for droplets spreading on a compliant substrate is reported and it is found that the onset of the instability and the number of arms depend on the ratio of surface tension to gel strength. (via Semantic Scholar)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2006 journal article

Characterization of a freezing/melting transition in a vibrated and sheared granular medium

Journal of Statistical Mechanics: Theory and Experiment, 2006(07), P07018–P07018.

By: K. Daniels n & R. Behringer*

author keywords: phase diagrams (experiment); granular matter; slow relaxation and glassy dynamics; fluctuations (experiment)
topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Proteins in Food Systems
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2005 conference paper

Freezing and Melting in Granular Materials

AIP Conference Proceedings.

By: K. Daniels*

topics (OpenAlex): Granular flow and fluidized beds; Statistical Mechanics and Entropy
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UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: ORCID
Added: January 8, 2019

2005 journal article

Hysteresis and Competition between Disorder and Crystallization in Sheared and Vibrated Granular Flow

Physical Review Letters, 94(16), 168001.

By: K. Daniels* & R. Behringer*

topics (OpenAlex): Granular flow and fluidized beds; Material Dynamics and Properties; Landslides and related hazards
TL;DR: Experiments on spherical particles in a 3D annular shear cell vibrated from below and sheared from above show a hysteretic freezing or melting transition under sufficient vibration, which can be melted by sufficient shear. (via Semantic Scholar)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2005 conference paper

Research Funding and Women in Physics

AIP Conference Proceedings. Presented at the Women in Physics: 2nd IUPAP International Conference on Women in Physics.

By: K. Daniels n

topics (OpenAlex): Science and Science Education
Sources: Crossref, ORCID, NC State University Libraries
Added: October 29, 2022

2005 journal article

Starbursts and wispy drops: Surfactants spreading on gels

Chaos: An Interdisciplinary Journal of Nonlinear Science, 15(4), 041107.

By: K. Daniels*, S. Mukhopadhyay* & R. Behringer*

topics (OpenAlex): Surface Modification and Superhydrophobicity; Fluid Dynamics and Heat Transfer; Fluid Dynamics and Thin Films
TL;DR: This work examines the intermediate case of a viscoelastic substrate and observes novel instabilities of the surfactant-laden drop influenced by both the substrate fluidity and the Surfactant concentration. (via Semantic Scholar)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2004 article

Defect turbulence and generalized statistical mechanics

Daniels, K. E., Beck, C., & Bodenschatz, E. B. (2004, June 15). PHYSICA D-NONLINEAR PHENOMENA, Vol. 193, pp. 208–217.

By: K. Daniels*, C. Beck* & E. Bodenschatz*

author keywords: convection defect turbulence; anomalous distributions; nonextensivity; tsallis entropy
topics (OpenAlex): Statistical Mechanics and Entropy; Complex Systems and Time Series Analysis; Probabilistic and Robust Engineering Design
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2004 journal article

Dynamics of meteor impacts

Chaos: An Interdisciplinary Journal of Nonlinear Science, 14(4), S4.

By: K. Daniels*, J. Coppock* & R. Behringer*

Contributors: K. Daniels*, J. Coppock* & R. Behringer*

topics (OpenAlex): Planetary Science and Exploration; Astro and Planetary Science; Granular flow and fluidized beds
TL;DR: The morphology of meteor craters has historically been studied via static analysis, after the fact, of what are hi dynamic impact events, and forces within the photoelastic particles appear as streaks, where larger intensity gradients correspond to l forces. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2004 journal article

Statistics of defect trajectories in spatio-temporal chaos in inclined layer convection and the complex Ginzburg–Landau equation

Chaos: An Interdisciplinary Journal of Nonlinear Science, 14(3), 864–874.

MeSH headings : Models, Theoretical; Nonlinear Dynamics; Physics / methods; Poisson Distribution; Software; Time Factors
topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Theoretical and Computational Physics; Fluid Dynamics and Turbulent Flows
TL;DR: In certain parameter regimes of the CGL and ILC, the results for the single-defect statistics show significant deviations from the previously reported findings that the defect dynamics are consistent with those of random walkers that are created with fixed probability and annihilated through random collisions. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: ORCID, NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2003 journal article

Localized Transverse Bursts in Inclined Layer Convection

Physical Review Letters, 91(11), 114501.

By: K. Daniels*, R. Wiener* & E. Bodenschatz*

topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Fluid Dynamics and Turbulent Flows; Theoretical and Computational Physics
TL;DR: This work investigates a novel bursting state in inclined layer thermal convection in which convection rolls exhibit intermittent, localized, transverse bursts, and proposes a mechanism which describes the duration of the observed bursting intervals. (via Semantic Scholar)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2003 journal article

Statistics of defect motion in spatiotemporal chaos in inclined layer convection

Chaos: An Interdisciplinary Journal of Nonlinear Science, 13(1), 55.

By: K. Daniels* & E. Bodenschatz*

Contributors: K. Daniels* & E. Bodenschatz*

MeSH headings : Diffusion; Fourier Analysis; Nonlinear Dynamics; Physical Phenomena; Physics; Time Factors
topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Theoretical and Computational Physics; stochastic dynamics and bifurcation
TL;DR: The ensemble of defect trajectories according to their velocities, relative positions, diffusion, and gain and loss rates are characterized and time-reversal and system size invariance for defect creation and annihilation rates are described. (via Semantic Scholar)
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Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2002 journal article

Defect Turbulence in Inclined Layer Convection

Physical Review Letters, 88(3), 034501.

By: K. Daniels* & E. Bodenschatz*

topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Fluid Dynamics and Turbulent Flows; Plant Water Relations and Carbon Dynamics
TL;DR: It is found that the onset of undulation chaos coincides with the theoretically predicted onset for stable, stationary undulations, suggesting bistability between a fixed-point attractor and spatiotemporal chaos. (via Semantic Scholar)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2000 journal article

Pattern formation in inclined layer convection

PHYSICAL REVIEW LETTERS, 84(23), 5320–5323.

By: K. Daniels*, B. Plapp* & E. Bodenschatz*

topics (OpenAlex): Nonlinear Dynamics and Pattern Formation; Theoretical and Computational Physics; Fluid Dynamics and Thin Films
TL;DR: A number of new nonlinear, mostly spatiotemporally chaotic, states are observed in thermally driven convection in an inclined layer of large aspect ratio in a fluid of Prandtl number sigma approximately 1. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

Employment

Updated: October 27th, 2021 11:07

2021 - present

North Carolina State University Raleigh, North Carolina, US
Distinguished Professor of Physics Physics

2015 - 2021

North Carolina State University Raleigh, NC, US
Professor Physics

2011 - 2015

North Carolina State University Raleigh, NC, US
Associate Professor Physics

2005 - 2011

North Carolina State University Raleigh, NC, US
Assistant Professor Physics

2002 - 2005

Duke University Durham, NC, US
Research Associate Physics

1994 - 1997

St. Ann's School Brooklyn, NY, US
Science Teacher

Education

Updated: September 26th, 2019 17:31

1997 - 2002

Cornell University Ithaca, NY, US
PhD Physics

1997 - 2000

Cornell University Ithaca, NY, US
MS Physics

1990 - 1994

Dartmouth College Hanover, NH, US
BA Physics

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