Works (77)

Updated: June 11th, 2024 08:18

2023 journal article

Comparison of Bolus Versus Dual-Syringe Administration Systems on Glass Yttrium-90 Microsphere Deposition in an In Vitro Microvascular Hepatic Tumor Model

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY, 34(1), 11–20.

By: S. Miller n, S. Jernigan n, R. Abraham* & G. Buckner n

MeSH headings : Humans; Hepatic Artery / pathology; Microspheres; Syringes; Liver Neoplasms / diagnostic imaging; Liver Neoplasms / radiotherapy; Liver Neoplasms / blood supply; Yttrium Radioisotopes; Glass
TL;DR: Use of a new in vitro microvascular hepatic tumor model demonstrated that administration method can affect Y-90 microsphere deposition within a tumor, with greater distal deposition and more uniform tumor coverage when microspheres were delivered at consistent concentrations using a dual-syringe delivery device. (via Semantic Scholar)
Source: Web Of Science
Added: February 13, 2023

2023 journal article

Saturation and duty cycle tolerant self-sensing for active magnetic dampers

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 200.

By: V. Zaccardo n & G. Buckner n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 28, 2023

2022 journal article

A Permanent Magnet Synchronous Spherical Motor for High-Mobility Servo-Actuation

MACHINES, 10(8).

By: J. Shah n, S. Miller n, S. Jernigan n & G. Buckner n

author keywords: spherical motor; permanent magnet synchronous motor; PID control
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: September 6, 2022

2022 journal article

Sensor Fusion with Deep Learning for Autonomous Classification and Management of Aquatic Invasive Plant Species

ROBOTICS, 11(4).

By: J. Perrin n, S. Jernigan n, J. Thayer*, A. Howell n, J. Leary* & G. Buckner n

author keywords: aquatic invasive plants; deep learning; sensor fusion; autonomous robotics
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Source: Web Of Science
Added: September 12, 2022

2021 article

A Powered Prosthetic Ankle Designed for Task Variability - A Concept Validation

2021 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS), pp. 6153–6158.

By: S. Upadhye n, C. Shah n, M. Liu n, G. Buckner n & H. Huang n

Contributors: S. Upadhye n, C. Shah n, M. Liu n, G. Buckner n & H. Huang n

TL;DR: A new active prosthetic ankle, Variable Spring embedded Motor-ball screw (VSeM) ankle, to meet all these requirements at the same time, and its capability to mimic human ankle was validated through both bench tests and human subject tests. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 7, 2022

2021 journal article

Active magnetic dampers for controlling lateral rotor vibration in high-speed rotating shafts

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 152.

By: V. Zaccardo n & G. Buckner n

author keywords: Lateral rotor vibration; Active magnetic dampers; Squeeze film dampers; High speed shaft rotordynamics
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: April 19, 2021

2021 journal article

Control and Control Allocation for Bimodal, Rotary Wing, Rolling-Flying Vehicles

JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME, 13(5).

By: S. Atay n, M. Bryant n & G. Buckner n

author keywords: control allocation; mobile robotics; multirotor vehicles; nonlinear control systems; dynamics; flying robots; mobile robots; theoretical kinematics
TL;DR: A robust method for controlling the terrestrial motion of a bimodal multirotor vehicle that can roll and fly and that correctly determines a thrust-minimizing solution in real-time is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 7, 2021

2021 journal article

Genetic Algorithm-Based Optimal Design of a Rolling-Flying Vehicle

JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME, 13(5).

By: T. Jenkins n, S. Atay n, G. Buckner n & M. Bryant n

author keywords: actuators and transmissions; flying robots; mobile robots; robot design
TL;DR: This work builds on current approaches in quadrotor optimization by leveraging a variety of models and formulations from literature and demonstrating the implementation of various design constraints and improves upon current ad-hoc rolling-flying vehicle designs created in previous studies. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: September 7, 2021

2021 journal article

The Cost-Sorted Distance Method for Identifying Minima Within Firefly Optimization Results: Application to Engineering Design

JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING, 21(1).

By: C. Elliott n, S. Ferguson n & G. Buckner n

author keywords: computer aided design; cyber physical system design and operation; multidisciplinary optimization; multiphysics modeling and simulation
TL;DR: The tuned algorithm's efficacy is demonstrated using a class of benchmark problems and a “real world” electromechanical design problem, where the identification of attractive design alternatives can be challenging. (via Semantic Scholar)
Source: Web Of Science
Added: February 8, 2021

2021 journal article

The Spherical Rolling-Flying Vehicle: Dynamic Modeling and Control System Design

JOURNAL OF MECHANISMS AND ROBOTICS-TRANSACTIONS OF THE ASME, 13(5).

By: S. Atay n, M. Bryant n & G. Buckner n

author keywords: mobile robotics; rolling quadrotor; bi-modal vehicles; control; dynamics; flying robots; mobile robots; theoretical kinematics
TL;DR: This paper presents the dynamic modeling and control of a bi-modal, multirotor vehicle that is capable of omnidirectional terrestrial rolling andMultirotor flight, with experimental validation on the theoretical development of a terrestrial dynamic model and control systems. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: September 7, 2021

2020 journal article

A large air gap magnetic levitator for intra-arterial positioning of a clinical microcatheter: design, fabrication, and preliminary experimental evaluation

INTERNATIONAL JOURNAL OF INTELLIGENT ROBOTICS AND APPLICATIONS, 4(1), 122–131.

By: V. Zaccardo n, S. Miller n & G. Buckner n

author keywords: Magnetic levitation; Active magnetic bearing; Radioembolization
TL;DR: The design, fabrication, and preliminary testing of a large air gap magnetic levitator, used to precisely position the microcatheter tip in a dynamically perfused arterial model cross section, allowing for microsphere injections from controlled locations within the cross section. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: April 6, 2020

2020 journal article

Design and testing of a centrifugal fluidic device for populating microarrays of spheroid cancer cell cultures

JOURNAL OF BIOLOGICAL ENGINEERING, 14(1).

By: W. Weisler n, S. Miller n, S. Jernigan n, G. Buckner n & M. Bryant n

TL;DR: A centrifugal fluidic device was developed and tested for rapid extraction of spheroids from a 96-well plate and subsequent deposition into a molded agar receiver block, indicating that the proposed device is capable of a high capture success rate and high sample planarity. (via Semantic Scholar)
Source: Web Of Science
Added: March 30, 2020

2020 journal article

Dynamic Modeling for Bi-Modal, Rotary Wing, Rolling-Flying Vehicles

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, 142(11).

By: S. Atay n, G. Buckner n & M. Bryant n

TL;DR: This paper is the first to offer a complete and rigorous derivation, simulation, and validation of the vehicle's terrestrial rolling dynamics of the bi-modal multirotor vehicle that can roll and fly. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 26, 2020

2020 journal article

Energetic analysis and optimization of a bi-modal rolling-flying vehicle

INTERNATIONAL JOURNAL OF INTELLIGENT ROBOTICS AND APPLICATIONS, 4(1), 3–20.

By: S. Atay n, T. Jenkins n, G. Buckner n & M. Bryant n

author keywords: Bi-modal vehicle; Blade element momentum theory; Mobile robotics; Power optimization
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 20, 2020

2020 journal article

Gastric artery embolization: studying the effects of catheter type and injection method on microsphere distributions within a benchtop arterial model

BIOMEDICAL ENGINEERING ONLINE, 19(1).

By: S. Jernigan n, J. Osborne n & G. Buckner n

author keywords: Gastric artery; Embolization; Vessel targeting; Reflux
MeSH headings : Catheters; Embolization, Therapeutic / instrumentation; Gastric Artery; Humans; Injections; Microspheres
TL;DR: Catheter type had a significant effect on targeting accuracy across all injection methods, and the Endobar catheter exhibited a higher targeting accuracy in pairwise comparisons with the other two injection catheters across all injections schemes. (via Semantic Scholar)
Source: Web Of Science
Added: July 27, 2020

2020 journal article

Non-contacting measurement of torque and axial translation in high-speed rotating shafts

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 138.

By: D. Kakaley*, R. Altieri* & G. Buckner n

author keywords: Torque; Speed; Axial translation; Estimation; Variable reluctance sensor; Rotating shaft
TL;DR: Development and experimental demonstration of a unique non-contacting Variable Reluctance sensor system that enables simultaneous estimation of torque, speed, and axial translation in high-speed rotating shafts are focused on. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: March 23, 2020

2019 journal article

Multi-Objective Design Optimization of a Shape Memory Alloy Flexural Actuator

ACTUATORS, 8(1).

By: C. Haigh n, J. Crews n, S. Wang* & G. Buckner n

author keywords: shape memory alloy; microscale actuation; design optimization; genetic algorithm
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: April 22, 2019

2019 journal article

Retraction mechanics of Finochietto-style self-retaining thoracic retractors

BIOMEDICAL ENGINEERING ONLINE, 18.

By: G. Chanoit*, C. Pell*, G. Bolotin*, G. Buckner n, J. Williams* & H. Crenshaw*

author keywords: Retraction; Thoracotomy; Sternotomy; Finochietto; Rib fracture; Force relaxation
MeSH headings : Animals; Female; Mechanical Phenomena; Swine; Thoracotomy / instrumentation; Weight-Bearing
TL;DR: The Finochietto-style retractor can generate large forces and some aspects of its design increase the probability of tissue trauma, and mechanical analyses revealed that arm motion is a non-linear function of handle rotation. (via Semantic Scholar)
Source: Web Of Science
Added: April 29, 2019

2018 journal article

A large air gap magnetic levitator for precise positioning of a clinical microcatheter: nonlinear modelling and control

INTERNATIONAL JOURNAL OF INTELLIGENT ROBOTICS AND APPLICATIONS, 2(4), 462–469.

By: S. Miller n, V. Zaccardo n & G. Buckner n

author keywords: Large air gap magnetic levitator; Active magnetic bearing; Sliding mode control; Finite element analysis
TL;DR: The application of nonlinear modelling and control strategies to a large air gap magnetic levitator using four electromagnets in a heteropolar active magnetic bearing configuration to control the tip position of a flexible microcatheter for applications in interventional medicine is detailed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: December 10, 2018

2018 journal article

An offset hub active vibration control system for mitigating helicopter vibrations during power loss: Simulation and experimental demonstration

AEROSPACE SCIENCE AND TECHNOLOGY, 77, 610–625.

By: D. Kakaley*, M. Jolly* & G. Buckner n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2018 journal article

Design optimization of a novel elastomeric baffle magnetorheological fluid device

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 29(19), 3774–3791.

By: C. Elliott n & G. Buckner n

author keywords: Magnetorheological; optimization; firefly optimization
TL;DR: This article details the design optimization of a novel magnetorheological fluid device, which incorporates a rolling elastomeric baffle to contain the fluid and minimize cost and complexity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: December 3, 2018

2017 journal article

Real-time estimation of helicopter rotor blade kinematics through measurement of rotation induced acceleration

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 91, 183–197.

By: C. Allred n, D. Churchill* & G. Buckner n

author keywords: Kinematics; Estimation; Helicopter; Accelerometer; Neural network; Rotor Blade
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2016 conference paper

Design optimization and analysis of a prescribed vibration system

Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, 2016, Vol 2b, 353–360.

By: B. Malinga n, S. Ferguson n & G. Buckner n

UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Design optimization of a prescribed vibration system using conjoint value analysis

ENGINEERING OPTIMIZATION, 48(12), 2090–2113.

By: B. Malinga n & G. Buckner n

author keywords: vibration; shale shaker; system optimization; multi-attribute; conjoint value analysis
Source: Web Of Science
Added: August 6, 2018

2016 journal article

Solid Tumor Embolotherapy in Hepatic Arteries with an Anti-reflux Catheter System

ANNALS OF BIOMEDICAL ENGINEERING, 44(4), 1036–1046.

By: Z. Xu n, S. Jernigan n, C. Kleinstreuer n & G. Buckner n

author keywords: Liver cancer; Transient particle-hemodynamics; Embolization; Particle-reflux; Infusion-stop point; Excessive particle capture
MeSH headings : Blood Pressure; Carcinoma, Hepatocellular / therapy; Catheters; Embolization, Therapeutic; Hemodynamics; Hepatic Artery / physiology; Humans; Liver Neoplasms / therapy; Microspheres; Models, Biological
TL;DR: The results show that the present procedure for embolization of downstream vessels which feed a tumor is quite arbitrary, Nevertheless, a method to recycle aberrant particles captured by the deployed tip was proposed to minimize side-effects. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Innovation in catheter design for intra-arterial liver cancer treatments results in favorable particle-fluid dynamics

Journal of Experimental & Clinical Cancer Research, 34.

By: A. Hoven*, M. Lam*, S. Jernigan n, M. Bosch* & G. Buckner n

MeSH headings : Catheters; Embolization, Therapeutic; Humans; Hydrodynamics; Liver Neoplasms / drug therapy
TL;DR: First evidence of catheter design effect on particle-fluid dynamics and downstream branch targeting during microsphere administrations in an in-vitro hepatic arterial model is presented. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2015 journal article

Path optimization and control of a shape memory alloy actuated catheter for endocardial radiofrequency ablation

ROBOTICS AND AUTONOMOUS SYSTEMS, 65, 88–97.

By: J. Wiest n & G. Buckner n

author keywords: Control; SMA; Optimization; Robotic; Surgery; Hysteresis; Nonlinear; Catheter
TL;DR: A real-time path optimization and control strategy for shape memory alloy (SMA) actuated cardiac ablation catheters is introduced, potentially enabling the creation of more precise lesions with reduced procedure times and improved patient outcomes. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Real-time estimation of helicopter blade kinematics using integrated linear displacement sensors

Aerospace Science and Technology, 42, 274–286.

By: C. Allred, M. Jolly & G. Buckner*

author keywords: Health and Usage Monitoring Systems; Helicopter; High capacity laminate bearing
Source: Crossref
Added: February 24, 2020

2015 journal article

Selective Internal Radiation Therapy: Quantifying Distal Penetration and Distribution of Resin and Glass Microspheres in a Surrogate Arterial Model

Journal of Vascular and Interventional Radiology, 26(6), 897–904.e2.

By: S. Jernigan n, J. Osborne n, C. Mirek n & G. Buckner n

MeSH headings : Animals; Embolization, Therapeutic / methods; Glass / chemistry; Hemodynamics; Hepatic Artery / pathology; Hepatic Artery / physiopathology; Humans; Injections, Intra-Arterial; Liver Circulation; Liver Neoplasms / blood supply; Liver Neoplasms / pathology; Liver Neoplasms / radiotherapy; Microspheres; Models, Anatomic; Particle Size; Radiopharmaceuticals / administration & dosage; Resins, Synthetic / chemistry; Technetium Tc 99m Aggregated Albumin / administration & dosage
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref
Added: August 6, 2018

2015 journal article

ℒ1adaptive control of a shape memory alloy actuated flexible beam

Systems Science & Control Engineering, 3(1), 460–471.

By: B. Malinga n & G. Buckner n

author keywords: control systems; adaptive control; artificial neural networks; shape memory alloys; nonlinear systems; optimization; grid search
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Crossref
Added: November 22, 2020

2014 journal article

Indirect Intelligent Sliding Mode Control of Antagonistic Shape Memory Alloy Actuators Using Hysteretic Recurrent Neural Networks

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 22(3), 921–929.

By: J. Wiest* & G. Buckner n

author keywords: Intelligent control; microactuators; recurrent neural networks; shape memory alloys; sliding mode control
TL;DR: An indirect intelligent sliding mode control (IISMC) system for use with antagonistic shape memory alloy (SMA) actuators, robust to model uncertainty, disturbances, and parameter variations, with bending angle tracking results superior to those of an optimized proportional + integral controller. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Multi-Objective Design Optimization of a Variable Geometry Spray Fuel Injector

JOURNAL OF MECHANICAL DESIGN, 136(4).

By: J. Archer n, T. Fang n, S. Ferguson n & G. Buckner n

Contributors: J. Archer n, T. Fang n, S. Ferguson n & G. Buckner n

TL;DR: This paper explores the simulation-based design optimization of a variable geometry spray (VGS) fuel injector using a multi-objective genetic algorithm interfaced with commercial computational fluid dynamics software and high performance computing capabilities to evaluate the spray characteristics of each VGS candidate design. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 conference paper

Indirect intelligent sliding mode control using hysteretic recurrent neural networks with application to a shape memory alloy actuated beam

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, vol 1, 295–303.

By: J. Hannen n & G. Buckner n

TL;DR: The development of an indirect intelligent sliding mode controller (IISMC) for shape memory alloy (SMA) actuators, which manipulates applied voltage, enabling temperature control in one or more SMA tendons, which are offset to produce bending in a flexible beam tip. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Design and demonstration of a novel micro-Coulter counter utilizing liquid metal electrodes

Journal of Micromechanics and Microengineering, 22(11), 115012.

By: A. Richards n, M. Dickey n, A. Kennedy & G. Buckner n

Sources: Crossref, Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2012 journal article

Design optimization of a shape memory alloy-actuated robotic catheter

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 23(5), 545–562.

By: J. Crews n & G. Buckner n

author keywords: actuator; optimization; shape memory
TL;DR: This article addresses the modeling and optimization of both a single-tendon and antagonistic tendon robotic catheter using COMSOL Multiphysics Modeling and Simulation software. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2012 journal article

Experimental Microsphere Targeting in a Representative Hepatic Artery System

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 59(1), 198–204.

By: A. Richards n, C. Kleinstreuer n, A. Kennedy, E. Childress n & G. Buckner n

author keywords: Computational fluid-particle dynamics; hepatic artery (HA); liver tumor; radioembolization (RE)
MeSH headings : Animals; Blood Flow Velocity / physiology; Blood Physiological Phenomena; Brachytherapy / instrumentation; Computer Simulation; Drug Carriers / chemistry; Hepatic Artery / physiopathology; Humans; Microspheres; Models, Cardiovascular; Motion; Radiopharmaceuticals / chemistry; Rheology / methods
TL;DR: The experimental results validate the simulation methodology for achieving targeted microsphere distributions in a known geometry under constant flow conditions and exhibited a clear dependence on injection location that correlated very strongly with the computationally predicted results. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2012 conference paper

Implementing effective low-cost laboratory experiments into a distance engineering program

Proceedings of the ASME International Mechanical Engineering Congress and Exposition (IMECE 2010), vol 6, 87–94.

By: S. Jernigan n, B. Fortney, Y. Fahmy* & G. Buckner n

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Indirect intelligent sliding mode control of a shape memory alloy actuated flexible beam using hysteretic recurrent neural networks

SMART MATERIALS AND STRUCTURES, 21(8).

By: J. Hannen n, J. Crews n & G. Buckner n

TL;DR: This paper introduces an indirect intelligent sliding mode controller (IISMC) for shape memory alloy (SMA) actuators, specifically a flexible beam deflected by a single offset SMA tendon, achieving superior tracking compared to an optimized PI controller. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 conference paper

Modeling and experimental validation of shape memory alloy bending actuators

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems, vol 2, 79–87.

By: C. Haigh, J. Crews, S. Wang & G. Buckner

Source: NC State University Libraries
Added: August 6, 2018

2012 conference paper

Multi-objective design optimization of a shape memory alloy actuated robotic catheter

Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS 2011), vol 1, 381–389.

By: J. Crews n & G. Buckner n

TL;DR: This paper presents a method for optimizing the design of a shape memory alloy (SMA) actuated robotic catheter designed for use in endocardial ablation procedures, where “trackability” and “pushability’ are desirable but conflicting catheter traits, leading to a multi-objective optimization problem. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2011 journal article

A Novel Shape Memory Alloy Annuloplasty Ring for Minimally Invasive Surgery: Design, Fabrication, and Evaluation

ANNALS OF BIOMEDICAL ENGINEERING, 39(1), 367–377.

By: M. Purser n, A. Richards n, R. Cook*, J. Osborne n, D. Cormier* & G. Buckner n

author keywords: Mitral valve repair; Robotic surgery; Annuloplasty ring; Nitinol
MeSH headings : Alloys / chemistry; Computer-Aided Design; Elastic Modulus; Equipment Design; Equipment Failure Analysis; Heart Valve Prosthesis; Humans; Minimally Invasive Surgical Procedures / instrumentation; Nickel / chemistry; Titanium / chemistry
TL;DR: Experimental results suggest that the NiTi core ring could be a viable alternative to flexible bands in robot-assisted minimally invasive mitral valve repair. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Hysteretic neural network modeling of spring-coupled piezoelectric actuators

SMART MATERIALS AND STRUCTURES, 20(6).

By: J. Lien n, T. Fang n & G. Buckner n

Contributors: J. Lien n, T. Fang n & G. Buckner n

Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2011 journal article

Multi-objective control optimization for semi-active vehicle suspensions

JOURNAL OF SOUND AND VIBRATION, 330(23), 5502–5516.

By: J. Crews n, M. Mattson n & G. Buckner n

TL;DR: A multi-objective genetic algorithm (MOGA) is used to establish the limits of controller performance, creating a Pareto frontier of solutions, providing a benchmark for assessing the performance of other controllers in terms of both objectives. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2010 journal article

A laparoscopic knot-tying device for minimally invasive cardiac surgery☆

European Journal of Cardio-Thoracic Surgery, 37(3), 626–630.

By: S. Jernigan, G. Chanoit*, A. Veeramani*, S. Owen*, M. Hilliard*, D. Cormier*, B. Laffitte*, G. Buckner*

author keywords: Automated suturing; Knot tying; Fixation; Minimally invasive surgery
MeSH headings : Cardiac Surgical Procedures / instrumentation; Equipment Design; Humans; Laparoscopy / instrumentation; Materials Testing / methods; Models, Anatomic; Suture Techniques / instrumentation; Sutures; Tensile Strength; Time Factors
TL;DR: Experimental data reveal that the automated suturing device has great potential for advancing minimally invasive surgery: it significantly reduced knot-tying times while providing equivalent or greater holding strength than conventionally tied knots. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: August 6, 2018

2010 journal article

Modeling piezoelectric actuators with Hysteretic Recurrent Neural Networks

SENSORS AND ACTUATORS A-PHYSICAL, 163(2), 516–525.

By: J. Lien n, A. York n, T. Fang n & G. Buckner n

Contributors: J. Lien n, A. York n, T. Fang n & G. Buckner n

author keywords: Piezoelectric; Ferroelectric; Neural Network; Hysteresis; Actuator
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2009 journal article

A Dynamic Heart System to Facilitate the Development of Mitral Valve Repair Techniques

ANNALS OF BIOMEDICAL ENGINEERING, 37(4), 651–660.

By: A. Richards n, R. Cook*, G. Bolotin* & G. Buckner n

author keywords: Dynamic heart model; Mitral regurgitation; Mitral valve repair
MeSH headings : Animals; Cardiac Output; Cardiac Surgical Procedures; Echocardiography; Equipment Design; Heart / physiopathology; Heart Ventricles / physiopathology; Mitral Valve / diagnostic imaging; Mitral Valve / physiopathology; Mitral Valve / surgery; Mitral Valve Insufficiency / physiopathology; Pressure; Plastic Surgery Procedures; Sus scrofa / surgery
TL;DR: A dynamically pressurized model was developed to control pressure and flowrate profiles in intact porcine hearts in order to quantify mitral regurgitation and evaluate the quality of mitral valve repair. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2009 journal article

A Learning Method for Multivariable PID Control Synthesis Based on Estimated Plant Jacobian

INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS, 7(5), 737–744.

By: B. Chung*, Y. Lim & G. Buckner n

author keywords: Hydrofoil catamaran; Jacobian sign; learning method; PID control
TL;DR: Simulations involving a hydrofoil catamaran show that the proposed PID-LC algorithm improves controller performance compared to LQR controllers derived from multivariable models. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2009 journal article

Evaluation of a Shape Memory Alloy Reinforced Annuloplasty Band for Minimally Invasive Mitral Valve Repair

ANNALS OF THORACIC SURGERY, 88(4), 1312–1316.

By: M. Purser n, A. Richards n, R. Cook*, J. Osborne n, D. Cormier n & G. Buckner n

MeSH headings : Animals; Disease Models, Animal; Heart Valve Prosthesis; Heart Valve Prosthesis Implantation / instrumentation; Materials Testing / methods; Minimally Invasive Surgical Procedures / methods; Mitral Valve Insufficiency / surgery; Models, Theoretical; Prosthesis Design; Robotics; Swine
TL;DR: Experimental results suggest that the shape memory alloy reinforced band could be a viable alternative to flexible and semi-rigid bands in minimally invasive mitral valve repair. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2009 conference paper

Hysteretic recurrent neural networks: A tool for modeling hysteretic materials and systems

Smart Materials & Structures, 18(7).

By: A. Veeramani, J. Crews & G. Buckner

Source: NC State University Libraries
Added: August 6, 2018

2009 journal article

Hysteretic recurrent neural networks: a tool for modeling hysteretic materials and systems

Smart Materials and Structures, 18(7), 075004.

By: A. Veeramani n, J. Crews n & G. Buckner*

TL;DR: The results demonstrate the HRNN’s ability to accurately generalize hysteretic behavior with a relatively small number of neurons, and its ability to identify statistical information concerning the macroscopic material by analyzing the weights of the individual neurons. (via Semantic Scholar)
Source: Crossref
Added: August 28, 2020

2009 journal article

Implementing a Remote Laboratory Experience Into a Joint Engineering Degree Program: Aerodynamic Levitation of a Beach Ball

IEEE TRANSACTIONS ON EDUCATION, 52(2), 205–213.

By: S. Jernigan n, Y. Fahmy n & G. Buckner n

author keywords: Control; distance education; e-learning; joint degree program; levitation; remote laboratory
TL;DR: A successful and inexpensive implementation of a remote laboratory into a distance control systems course using readily available hardware and software is detailed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2008 conference paper

Annuloplasty band with shape memory alloy stiffener

Medical Device Materials IV, 231–236.

By: M. Purser, D. Cormier, G. Buckner, R. Cook & G. Bolotin

Source: NC State University Libraries
Added: August 6, 2018

2008 journal article

Effects of adhesion layers on the ferroelectric properties of lead zirconium titanate thin films deposited on silicon nitride coated silicon substrates

THIN SOLID FILMS, 516(18), 6052–6057.

By: O. Zohni n, G. Buckner n, T. Kim n, A. Kingon n, J. Maranchi* & R. Siergiej*

author keywords: silicon nitride; PZT; tantalum; adhesion; electrical properties and measurements
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Evaluation of a novel atrial retractor for exposure of the mitral valve in a porcine model

JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, 136(6), 1492–1495.

By: E. Bean n, G. Chanoit n, S. Jernigan n, G. Bolotin*, J. Osborne n & G. Buckner n

MeSH headings : Animals; Cadaver; Cardiac Surgical Procedures / instrumentation; Heart Atria / surgery; Minimally Invasive Surgical Procedures / instrumentation; Mitral Valve / surgery; Models, Animal; Models, Cardiovascular; Swine
TL;DR: The minimally invasive atrial retractor is a suitable alternative for atrial retraction compared with standard techniques of retraction and has the advantage of minimal atriotomy incision length and customizable retraction. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Linear parameter-varying techniques for control of a magnetic bearing system

CONTROL ENGINEERING PRACTICE, 16(10), 1161–1172.

By: B. Lu*, H. Choi*, G. Buckner n & K. Tammi n

author keywords: linear parameter-varying control; active magnetic bearing systems; model uncertainty; robust control; artificial neural networks; linear matrix inequalities
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Modeling the dynamic behavior of a shape memory alloy actuated catheter

SMART MATERIALS AND STRUCTURES, 17(1).

By: A. Veeramani n, G. Buckner n, S. Owen n, R. Cook* & G. Bolotin*

Source: Web Of Science
Added: August 6, 2018

2007 article

A novel instrumented retractor to monitor tissue-disruptive forces during lateral thoracotomy

Bolotin, G., Buckner, G. D., Jardine, N. J., Kiefer, A. J., Campbell, N. B., Kocherginsky, M., … Jeevanandam, V. (2007, April). JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, Vol. 133, pp. 949–954.

By: G. Bolotin*, G. Buckner n, N. Jardine n, A. Kiefer n, N. Campbell n, M. Kocherginsky*, J. Raman*, V. Jeevanandam*

MeSH headings : Animals; Biomechanical Phenomena; Models, Animal; Monitoring, Intraoperative / instrumentation; Sheep; Thoracotomy / adverse effects; Thoracotomy / instrumentation
TL;DR: Use of the novel instrumented retractor resulted in significantly lower average and peak retraction forces during lateral thoracotomy, as documented by lower systolic blood pressures and fewer rib fractures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Assessment of damage detection methods in GRID-LOCK (R) structures

MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 21(5), 2185–2197.

By: P. Pandurangan n & G. Buckner n

author keywords: GRID-LOCK (R) structures; non-destructive evaluation; ultrasonic inspection; vibration-based damage detection; optical NDE; finite-element analysis
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Defect identification in GRID-LOCK (R) joints

NDT & E International, 40(5), 347–356.

By: P. Pandurangan & G. Buckner

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Defect identification in GRID-LOCK® joints

NDT & E International, 40(5), 347–356.

By: P. Pandurangan & G. Buckner*

author keywords: GRID-LOCK (R) structures; optical nondestructive evaluation; shearography; surface displacement measurement; artificial neural networks; radial basis function network
Source: Crossref
Added: August 28, 2020

2007 journal article

Finite element modeling of the left atrium to facilitate the design of an endoscopic atrial retractor

JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 129(6), 825–837.

By: S. Jernigan n, G. Buckner n & J. Eischen n

author keywords: mitral valve repair; finite element analysis; left atrium; retraction
MeSH headings : Animals; Atrial Function, Left / physiology; Cardiac Surgical Procedures / instrumentation; Cardiac Surgical Procedures / methods; Equipment Design; Finite Element Analysis; Heart Atria / anatomy & histology; Heart Valve Diseases / surgery; Humans; Imaging, Three-Dimensional; Insufflation; Magnetic Resonance Imaging; Minimally Invasive Surgical Procedures / instrumentation; Mitral Valve / physiopathology; Mitral Valve / surgery; Models, Cardiovascular; Motion; Movement / physiology; Robotics / methods; Surgical Instruments; Swine; Tensile Strength
TL;DR: This model is used to facilitate the design of an endoscopically deployable atrial retractor for use in minimally invasive, robotically assisted mitral valve repair and is shown to be an effective tool for analyzing instrument/tissue interactions and for designing surgical instruments. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Investigating thin film stresses in stacked silicon dioxide/silicon nitride structures and quantifying their effects on frequency response

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 17(5), 1042–1051.

By: O. Zohni n, G. Buckner n, T. Kim n, A. Kingon n, J. Maranchi* & R. Siergiej*

Source: Web Of Science
Added: August 6, 2018

2007 journal article

Structural system identification and damage detection using the intelligent parameter varying technique: An experimental study

STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, 6(3), 231–243.

By: S. Saadat*, G. Buckner n & M. Noori*

author keywords: structural health monitoring; system identification; damage detection; base-excited structures; artificial neural networks
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Tissue-disruptive forces during median sternotomy

Heart Surgery Forum, 10(6), E487–492.

By: G. Bolotin, G. Buckner*, N. Campbell, M. Kocherginsky, J. Raman, V. Jeevanandam, J. Maessen

MeSH headings : Animals; Disease Models, Animal; Equipment Design; Pain, Postoperative / prevention & control; Sheep; Sternum / surgery; Stress, Mechanical; Thoracotomy / instrumentation
TL;DR: Use of the novel instrumented retractor resulted in lower average and peak retraction forces during median sternotomy, which correlated to a reduction in animal stress, as documented by heart rate. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

An adaptive system identification model of the biomechanical response of the human trunk during sudden loading

JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 128(2), 235–241.

By: B. Lawrence n, G. Buckner n & G. Mirka n

author keywords: sudden loading; system identification; lumbar
MeSH headings : Abdomen / physiology; Adaptation, Physiological / physiology; Adult; Back / physiology; Biomechanical Phenomena / methods; Computer Simulation; Elasticity; Feedback / physiology; Humans; Male; Models, Biological; Movement / physiology; Postural Balance / physiology; Posture / physiology; Reflex / physiology; Thorax / physiology; Weight-Bearing / physiology
TL;DR: System identification can be implemented with minimal error and used to gain more insight into the time-dependent trunk response to sudden loads and show estimates of system stiffness in good agreement with values in the literature. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Estimating model uncertainty using confidence interval networks: Applications to robust control

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, 128(3), 626–635.

By: G. Buckner n, H. Choi n & N. Gibson n

Source: Web Of Science
Added: August 6, 2018

2006 journal article

Vibration analysis for damage detection in metal-to-metal adhesive joints

EXPERIMENTAL MECHANICS, 46(5), 601–607.

By: P. Pandurangan n & G. Buckner n

author keywords: metal-to-metal adhesive joints; non-destructive evaluation; vibration analysis; damage detection; modal damping ratio
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Actuation and control strategies for miniature robotic surgical systems

Journal of Dynamic Systems, Measurement, and Control, 127(4), 537–549.

By: J. Stevens n & G. Buckner n

TL;DR: It is demonstrated that miniature actuation can overcome some of the limitations of current robotic systems by providing accurate, repeatable control of a small end effector in miniature surgical robotic systems. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2005 journal article

Adaptive system identification applied to the biomechanical response of the human trunk during sudden loading

JOURNAL OF BIOMECHANICS, 38(12), 2472–2479.

By: B. Lawrence n, G. Mirka n & G. Buckner n

author keywords: sudden loading; fatigue; training; lumbar; injury; modeling
MeSH headings : Abdomen / physiology; Acceleration; Adaptation, Physiological / physiology; Adult; Biomechanical Phenomena / methods; Computer Simulation; Elasticity; Head / physiology; Humans; Lumbar Vertebrae / physiology; Male; Models, Biological; Movement / physiology; Muscle Contraction; Muscle, Skeletal / physiology; Postural Balance / physiology; Posture / physiology; Stress, Mechanical; Thorax / physiology; Torque; Weight-Bearing / physiology
TL;DR: time-varying loading of the spine during sudden loading events and how these loading profiles are affected by workplace factors such as fatigue, expectation, and training can potentially lead to intervention strategies that can reduce these risks. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Automated knot tying for fixation in minimally invasive, robot-assisted cardiac surgery

JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME, 127(6), 1001–1008.

By: J. Kuniholm n, G. Buckner n, W. Nifong* & M. Orrico

MeSH headings : Cardiac Surgical Procedures / instrumentation; Cardiac Surgical Procedures / methods; Endoscopes; Equipment Design; Equipment Failure Analysis; Minimally Invasive Surgical Procedures / instrumentation; Minimally Invasive Surgical Procedures / methods; Robotics / instrumentation; Robotics / methods; Surgery, Computer-Assisted / instrumentation; Surgery, Computer-Assisted / methods; Suture Techniques / instrumentation
TL;DR: A design for a self-contained device for MIRA cardiac procedures that automates the knotting of sutures and suggests that consistent knots can be delivered at a time savings of 12.5% and 26.4% over manual knots for trained and untrained users of a surgical robot, respectively. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Sliding mode observation and control for semiactive vehicle suspensions

VEHICLE SYSTEM DYNAMICS, 43(2), 83–105.

By: R. Dixit* & G. Buckner n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2004 journal article

An intelligent parameter varying (IPV) approach for non-linear system identification of base excited structures

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS, 39(6), 993–1004.

By: S. Saadat n, G. Buckner n, T. Furukawa* & M. Noori n

author keywords: system identification; artifical neural networks; hysteresis; nonlinear systems; health monitoring
TL;DR: A novel system identification approach, the intelligent parameter varying (IPV) method, is used to identify constitutive non-linearities in structures subject to seismic excitations, overcomes the limitations of traditional parametric and non-parametric approaches, while preserving the unique benefits of each. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Structural health monitoring and damage detection using an intelligent parameter varying (IPV) technique

INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS, 39(10), 1687–1697.

By: S. Saadat n, M. Noori n, G. Buckner n, T. Furukawa* & Y. Suzuki*

author keywords: system identification; artificial neural networks; hysteresis; non-linear systems; damage detection; structural health monitoring; wavelet analysis
TL;DR: A novel intelligent parameter varying (IPV) modeling and system identification technique, developed by the authors, to detect damage in base-excited structures overcomes specific limitations of traditional model-based and non-model-based approaches. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Intelligent bounds on modeling uncertainty: Applications to sliding mode control

IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART C-APPLICATIONS AND REVIEWS, 32(2), 113–124.

By: G. Buckner n

author keywords: hard computing; intelligent control; modeling uncertainty; sliding mode control; soft computing
TL;DR: A novel approach to estimating uncertainty bounds for dynamic systems is introduced that uses a unique artificial neural network, the 2-Sigma network, to bound modeling uncertainty adaptively and results in a control algorithm that is both robust and adaptive. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2001 article

Active magnetic bearings for energy storage systems for combat vehicles

Pichot, M. A., Kajs, J. P., Murphy, B. R., Ouroua, A., Rech, B. M., Hayes, R. J., … Palazzolo, A. B. (2001, January). IEEE TRANSACTIONS ON MAGNETICS, Vol. 37, pp. 318–323.

By: M. Pichot*, J. Kajs*, B. Murphy*, A. Ouroua*, B. Rech*, R. Hayes*, J. Beno*, G. Buckner n, A. Palazzolo*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Intelligent feedback linearization for active vehicle suspension control

JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, 123(4), 727–733.

By: G. Buckner n, K. Schuetze* & J. Beno*

author keywords: active vehicle suspension; artificial neural networks; feedback linearization; intelligent control
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Intelligent sliding mode control of cutting force during single-point turning operations

JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 123(2), 206–213.

By: G. Buckner n

TL;DR: A novel intelligent control architecture has been developed to regulate cutting forces during single-point turning operations, using a unique artificial neural network, the 2-Sigma network, that statistically bounds modeling uncertainties between a low-order, linear dynamic model and the actual cutting process. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

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