Siddharth Gupta
Spintronics, Laser irradiation, ferromagnetism, heteroepitaxy
Works (37)
Updated: January 3rd, 2024 05:05
2023 journal article
Laser-induced synthesis of cubic BN nanoneedles: a new approach to fabricating nanomaterials for advanced applications
JOURNAL OF NANOPARTICLE RESEARCH, 25(12).
author keywords: c-BN; h-BN; Thin films; Laser irradiation; Raman spectroscopy; Nanosecond laser melting; Molecular dynamics; Nanostructures
Sources: Web Of Science, NC State University Libraries
Added: January 2, 2024
2023 journal article
Reimagining Carbon Nanomaterial Analysis: Empowering Transfer Learning and Machine Vision in Scanning Electron Microscopy for High-Fidelity Identification
MATERIALS, 16(15).
author keywords: Q-carbon; non-equilibrium; laser irradiation; scanning electron microscopy; Raman spectroscopy; graphene
TL;DR:
A novel technique for identifying and analyzing diverse nanoscale carbon allotropes using scanning electron micrographs using convolutional neural networks and computer vision techniques to achieve allotrope discovery even with sparse spatial presence is proposed.
(via Semantic Scholar)
www.mdpi.com (publisher PDF)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: Web Of Science
Added: August 28, 2023
2023 article
Synthesis of laser-patterned MoS2 nanoneedles for advanced electrochemical sensing
Joshi, P., Shukla, S., Gupta, S., Joshi, N., Narayan, J., & Narayan, R. (2023, June 14). MRS COMMUNICATIONS, Vol. 6.
Contributors: P. Joshi n, S. Shukla n, * , N. Joshi n , J. Narayan n & R. Narayan n
author keywords: Laser annealing; Laser-induced reaction; Nanostructure; Sensor
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 3, 2023
2022 journal article
Emergence of orbital two-channel Kondo effect in epitaxial TiN thin films
Solid State Communications, 341, 114547.
author keywords: Orbital two-Channel Kondo effect; Ferromagnetism; Non-Fermi liquid; Resistivity minima; Electron energy-loss spectroscopy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
Source: ORCID
Added: October 8, 2021
2022 journal article
Excimer Laser Patterned Holey Graphene Oxide Films for Nonenzymatic Electrochemical Sensing
ACS APPLIED MATERIALS & INTERFACES, 14(32), 37149–37160.
author keywords: defect engineering; con focal Raman spectroscopy; electrocatalysis; melting; holey graphene
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 6, 2022
2022 journal article
Fabricating Graphene Oxide/h-BN Metal Insulator Semiconductor Diodes by Nanosecond Laser Irradiation
NANOMATERIALS, 12(15).
author keywords: Raman spectroscopy; h-BN; 2D materials; laser irradiation; graphene; molecular dynamics; Fowler-Nordheim tunneling; transmission electron microscopy
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 9, 2022
2022 journal article
Laser Irradiation-Induced Nanoscale Surface Transformations in Strontium Titanate
CRYSTALS, 12(5).
author keywords: pulsed laser irradiation; strontium titanate; high-angle annular dark-field imaging; electron energy-loss spectroscopy; oxygen vacancies
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 28, 2022
2022 journal article
Spin Engineering of VO2 Phase Transitions and Removal of Structural Transition
ACS APPLIED MATERIALS & INTERFACES, 14(10), 12883–12892.
author keywords: spin engineering; exchange bias; VO2; structural pinning; magnetocaloric effect
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: March 3, 2022
2021 review
Advances in laser-assisted conversion of polymeric and graphitic carbon into nanodiamond films
[Review of ]. NANOTECHNOLOGY, 32(43).
author keywords: nanodiamonds; PTFE; CNT; laser annealing; melting; CVD
TL;DR:
ND fabrication by UV irradiation of graphitic and polymeric carbon opens up a pathway for preparing selective coatings of polymer-diamond composites, doped nanodiamonds, and graphene composites for quantum computing and biomedical applications.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 3, 2021
2021 article
Laser Irradiation Induced Atomic Structure Modifications in Strontium Titanate
Gupta, A. K., Gupta, S., & Sachan, R. (2021, November 9). JOM, Vol. 11.
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: November 23, 2021
2021 journal article
Liquid phase regrowth of (110) nanodiamond film by UV laser annealing of PTFE to generate dense CVD microdiamond film
DIAMOND AND RELATED MATERIALS, 117.
author keywords: Phase pure nanodiamonds; PTFE; Teflon; Adherent microdiamond film; Laser annealing; Melting; Unseeded crystallization
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 23, 2021
2021 journal article
Role of Q-carbon in nucleation and formation of continuous diamond film
CARBON, 176, 558–568.
author keywords: Continuous epitaxial diamond film; Diamond nucleation and growth; Adhesion of diamond film
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: March 29, 2021
2021 journal article
Synthesis of multifunctional microdiamonds on stainless steel substrates by chemical vapor deposition
CARBON, 171, 739–749.
author keywords: Laser annealing; Q-carbon; Diamond thin films; Stress; EBSD; Raman spectroscopy
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: January 19, 2021
2020 journal article
Characteristics of diamond deposition on Al2O3, diamond-like carbon and Q-carbon
ACS Applied Electronic Materials, 2(5), 1323–1334.
author keywords: diamond; Q-carbon; chemical vapor deposition; thin film; pulsed laser annealing
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: April 26, 2020
2020 journal article
Direct conversion of Teflon into nanodiamond films
Materials Research Letters, 8(11), 408–416.
author keywords: Nanodiamond; laser annealing; transmission electron microscopy; Raman spectroscopy; molecular dynamics
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: July 23, 2020
2020 journal article
Electron mobility modulation in graphene oxide by controlling carbon melt lifetime
CARBON, 170, 327–337.
author keywords: Graphene; Molten carbon; Undercooling; Mobility; Raman spectroscopy; Laser annealing; Transmission electron microscopy
Sources: Web Of Science, NC State University Libraries
Added: November 9, 2020
2020 journal article
Evidence of weak antilocalization in epitaxial TiN thin films
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 498.
author keywords: Weak antilocalization; Ferromagnetism; Epitaxy; Thin films; Raman spectroscopy; Domain matching epitaxy; Electron energy-loss spectroscopy
Sources: Web Of Science, NC State University Libraries
Added: January 13, 2020
2020 journal article
Fabrication of ultrahard Q-carbon nanocoatings on AISI 304 and 316 stainless steels and subsequent formation of high-quality diamond films
Diamond and Related Materials.
author keywords: Nonequilibrium; Laser annealing; Stainless steel; CVD; Q-carbon; Diamond
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: March 2, 2020
2020 journal article
Nanometer-Thick Hexagonal Boron Nitride Films for 2D Field-Effect Transistors
ACS Applied Nano Materials, 3(8), 7930–7941.
author keywords: h-BN; spatially controlled monolayer and bilayer; laser annealing; Raman spectroscopy; transmission electron microscopy; nanosecond laser melting; molecular dynamics
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: August 12, 2020
2020 journal article
Nonequilibrium Structural Evolution of Q-Carbon and Interfaces
ACS Applied Materials & Interfaces, 12(1), 1330–1338.
author keywords: Q-carbon; nonequilibrium; laser annealing; polyamorphism; scanning transmission electron microscopy; Raman spectroscopy; molecular dynamics
TL;DR:
Details of the evolution of heterointerfaces formed from carbon melt, for designing heterostructures far from equilibrium for various functional applications by using pulsed laser processing are presented.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: December 17, 2019
2020 journal article
Selective Liquid-Phase Regrowth of Reduced Graphene Oxide, Nanodiamond, and Nanoscale Q-Carbon by Pulsed Laser Annealing for Radiofrequency Devices
ACS Applied Nano Materials, 3(6), 5178–5188.
author keywords: nanodiamond; nonequilibrium; laser annealing; electron microscopy; Raman spectroscopy; graphene
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: June 18, 2020
2019 journal article
Direct conversion of carbon nanofibers and nanotubes into diamond nanofibers and the subsequent growth of large-sized diamonds
Nanoscale, 11(5), 2238–2248.
Contributors: J. Narayan n , A. Bhaumik n, R. Sachan n, A. Haque n, n & P. Pant n
TL;DR:
A pulsed laser annealing method to convert carbon fibers and nanotubes into diamond fibers at ambient temperature and pressure in air and these laser-treated carbon fibers with diamond seeds are used to grow larger diamond crystallites further by using standard hot-filament chemical vapor deposition (HFCVD).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 23, 2019
2019 journal article
Evidence of weak antilocalization in epitaxial TiN thin films
Journal of Magnetism and Magnetic Materials, 166094.
Source: ORCID
Added: December 17, 2019
2019 journal article
Formation of Q-carbon and diamond coatings on WC and steel substrates
Diamond and Related Materials.
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: September 3, 2019
2019 journal article
Non-equilibrium processing of ferromagnetic heavily reduced graphene oxide
Carbon, 153, 663–673.
Contributors: n & J. Narayan n
Source: ORCID
Added: July 21, 2019
2019 journal article
Reduced Graphene Oxide/Amorphous Carbon P–N Junctions: Nanosecond Laser Patterning
ACS Applied Materials & Interfaces, 11(27), 24318–24330.
Contributors: n & J. Narayan n
author keywords: graphene; p-n junction; diode; laser patterning; transmission electron microscopy; Raman spectroscopy; molecular dynamics
TL;DR:
This unique laser processing method solves the problems of traps and defects associated with equilibrium-based rGO fabrication methods, enabling high conductivity and mobility, providing insights into the fundamental mechanism driving laser writing of graphene-based materials on Silicon.
(via Semantic Scholar)
Source: ORCID
Added: June 28, 2019
2019 journal article
Room-temperature ferromagnetism in epitaxial titanium nitride thin films
Acta Materialia, 166, 221–230.
Contributors: n , A. Moatti n , A. Bhaumik n, R. Sachan n & J. Narayan
author keywords: Ferromagnetism; Titanium nitride; RKKY interaction; Electron energy-loss spectroscopy; Nitrogen vacancies; Domain-matching epitaxy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 23, 2019
2019 journal article
Scale-up of Q‑carbon and nanodiamonds by pulsed laser annealing
Diamond and Related Materials.
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: ORCID
Added: September 3, 2019
2019 conference paper
Wafer scale-up and emergence of ferromagnetism in superhard Q-carbon coatings by nanosecond pulsed laser irradiation
International SAMPE Technical Conference, 2019-May. http://www.scopus.com/inward/record.url?eid=2-s2.0-85068799491&partnerID=MN8TOARS
Source: ORCID
Added: August 6, 2019
2018 journal article
Enhanced mechanical properties of Q-carbon nanocomposites by nanosecond pulsed laser annealing
NANOTECHNOLOGY, 29(45).
Contributors: n , R. Sachan n, A. Bhaumik n & J. Narayan
author keywords: pulsed laser annealing; Raman spectroscopy; electron energy loss spectroscopy; nanoindentation; Q-carbon
TL;DR:
In this report, a single-step strategy to fabricate adherent coatings of hard and lubricating Q-carbon nanocomposites is presented and carbon-based superhard materials for longer lasting protective coatings and related applications are advanced.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: October 16, 2018
2018 journal article
Progress in Q-carbon and related materials with extraordinary properties
MATERIALS RESEARCH LETTERS, 6(7), 353–364.
Contributors: J. Narayan n , A. Bhaumik n, n , A. Haque n & R. Sachan n
author keywords: Q-carbon; Q-BN; hardness; diamond microneedles; Raman spectroscopy
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2018 journal article
Q-carbon harder than diamond
MRS COMMUNICATIONS, 8(2), 428–436.
Contributors: J. Narayan n , n , A. Bhaumik, R. Sachan n, F. Cellini* & E. Riedo *
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2018 journal article
Room-Temperature Ferromagnetism and Extraordinary Hall Effect in Nanostructured Q‐Carbon: Implications for Potential Spintronic Devices
ACS Applied Nano Materials, 1(2), 807–819.
author keywords: ferromagnetism; quenched carbon; Raman spectroscopy; electron energy-loss spectroscopy; extraordinary Hall effect; n-type conductivity; spintronics; magnetotransport
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 23, 2019
2018 journal article
Structural Evolution of Q-Carbon and Nanodiamonds
JOM, 70(4), 450–455.
Contributors: n , A. Bhaumik n, R. Sachan n & J. Narayan n
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 23, 2019
2018 journal article
Undercooling driven growth of Q-carbon, diamond, and graphite
MRS COMMUNICATIONS, 8(2), 533–540.
Contributors: n , R. Sachan*, A. Bhaumik n, P. Pant n & J. Narayan n
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2018 journal article
Vacancy-Driven Robust Metallicity of Structurally Pinned Monoclinic Epitaxial VO2 Thin Films
ACS Applied Materials & Interfaces, 11(3), 3547–3554.
Contributors: A. Moatti n , R. Sachan n, n & J. Narayan n
author keywords: Mott transition; oxygen vacancy; metallicity; defect engineering; charge doping; metallic monoclinic VO2
TL;DR:
A defect engineering pathway through the control of oxygen vacancies to tune electrical and optical properties in epitaxial monoclinic VO2 is proposed, leading to convenient free-electron transport through the oxygen-deficient VO2- x thin films, resulting in metallic characteristics at room temperature.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 23, 2019
2017 journal article
Discovery of High-Temperature Superconductivity (T-c=55 K) in B-Doped Q-Carbon
ACS NANO, 11(12), 11915–11922.
Contributors: A. Bhaumik n, R. Sachan n, n & J. Narayan
author keywords: superconductivity; Q-carbon; magnetism; electron energy-loss spectroscopy; Raman spectroscopy
TL;DR:
It is established that heavy B doping in Q-carbon is the pathway for achieving high-temperature superconductivity.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 6, 2018
Education
Updated: March 1st, 2020 17:26
2016 - 2020
North Carolina State University Raleigh, NC, US
Doctor of Philosophy
Materials Science and Engineering
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