Works (33)

Updated: July 8th, 2023 21:13

2021 journal article

Formation of self-organized nano- and micro-diamond rings

MATERIALS RESEARCH LETTERS, 9(7), 300–307.

By: J. Narayan n, A. Bhaumik*, S. Gupta*, P. Joshi n, P. Riley n & R. Narayan n

author keywords: Nanodiamond ring; self-organized nanodiamonds; Q-carbon
Sources: Web Of Science, ORCID
Added: April 19, 2021

2021 journal article

Role of Q-carbon in nucleation and formation of continuous diamond film

CARBON, 176, 558–568.

By: J. Narayan n, A. Bhaumik*, S. Gupta*, P. Joshi n, P. Riley n & R. Narayan n

author keywords: Continuous epitaxial diamond film; Diamond nucleation and growth; Adhesion of diamond film
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: March 29, 2021

2019 journal article

Diamond film growth by HFCVD on Q-carbon seeded substrate

CARBON, 141, 182–189.

By: R. Sachan n, A. Bhaumik n, P. Pant n, J. Prater n & J. Narayan n

author keywords: Q-carbon; Hot filament chemical vapor deposition; Diamond film; Transmission electron microscopy; Raman spectroscopy
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: December 10, 2018

2019 journal article

Direct conversion of carbon nanofibers into diamond nanofibers using nanosecond pulsed laser annealing

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 21(13), 7208–7219.

By: A. Bhaumik n & J. Narayan n

TL;DR: This highly non-equilibrium nanosecond laser processing opens a new avenue for the synthesis of exciting pure and doped diamond structures at ambient temperatures and pressures for a variety of applications. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: May 6, 2019

2019 journal article

Formation and characterization of nano- and microstructures of twinned cubic boron nitride

Physical Chemistry Chemical Physics, 21(4), 1700–1710.

By: A. Bhaumik n & J. Narayan n

TL;DR: It is envisage that the controlled growth of phase-pure nano and microstructures of twinned c-BN and their temperature-dependent Raman-active vibrational mode studies will have a tremendous impact on low-temperature solid-state electrical and mechanical devices. (via Semantic Scholar)
Sources: Web Of Science, Crossref, ORCID
Added: March 11, 2019

2019 journal article

Nano-to-micro diamond formation by nanosecond pulsed laser annealing

JOURNAL OF APPLIED PHYSICS, 126(12).

By: A. Bhaumik n & J. Narayan n

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: October 28, 2019

2019 journal article

Pseudo-topotactic growth of diamond nanofibers

ACTA MATERIALIA, 178, 179–185.

By: J. Narayan n, A. Bhaumik n & A. Hague

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: October 7, 2019

2019 journal article

Search for near room-temperature superconductivity in B-doped Q-carbon

MATERIALS RESEARCH LETTERS, 7(4), 164–172.

By: J. Narayan n, R. Sachan n & A. Bhaumik n

author keywords: High-temperature superconductors; Q-carbon; BCS superconductivity; Cryo-EELS
Sources: Web Of Science, ORCID
Added: April 22, 2019

2019 journal article

Structure–property correlations in phase-pure B-doped Q-carbon high-temperature superconductor with a record Tc = 55 K

Nanoscale, 11(18), 9141–9154.

By: A. Bhaumik n & J. Narayan

TL;DR: The detailed structure-property correlations in phase-pure B-doped Q-carbon high-temperature superconductor having a superconducting transition temperature (Tc) of 55 K indicate its practical applications in frictionless motors and high-speed electronics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref, ORCID
Added: June 17, 2019

2019 journal article

Tunable charge states of nitrogen-vacancy centers in diamond for ultrafast quantum devices

Carbon, 142, 662–672.

By: A. Bhaumik n, R. Sachan n & J. Narayan n

author keywords: NV-diamond; Raman spectroscopy; Electron energy-loss spectroscopy; Non-equilibrium synthesis
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref, ORCID
Added: December 17, 2018

2018 journal article

Electrochromic effect in Q-carbon

Applied Physics Letters, 112(22).

By: A. Bhaumik & J. Narayan

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

2018 journal article

Enhanced mechanical properties of Q-carbon nanocomposites by nanosecond pulsed laser annealing

NANOTECHNOLOGY, 29(45).

By: S. Gupta n, R. Sachan n, A. Bhaumik n & J. Narayan

Contributors: S. Gupta 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)
Sources: Web Of Science, ORCID
Added: October 16, 2018

2018 journal article

High temperature superconductivity in distinct phases of amorphous B-doped Q-carbon

Journal of Applied Physics, 123(13).

By: J. Narayan, A. Bhaumik & R. Sachan

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

2018 journal article

Magnetic relaxation and three-dimensional critical fluctuations in B-doped Q-carbon - a high-temperature superconductor

NANOSCALE, 10(26), 12665–12673.

By: A. Bhaumik n, R. Sachan n & J. Narayan

TL;DR: The creep of trapped magnetic flux and three-dimensional critical fluctuations near the superconducting transition temperature (Tc = 36 K) in B-doped amorphous Q-carbon are reported and moderate to strong electron-phonon coupling in B.doped Q- carbon is validated as a BCS type-II superconductor. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Progress in Q-carbon and related materials with extraordinary properties

MATERIALS RESEARCH LETTERS, 6(7), 353–364.

By: J. Narayan n, A. Bhaumik n, S. Gupta n, A. Haque n & R. Sachan n

Contributors: J. Narayan n, A. Bhaumik n, S. Gupta n, A. Haque n & R. Sachan n

author keywords: Q-carbon; Q-BN; hardness; diamond microneedles; Raman spectroscopy
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Q-carbon harder than diamond

MRS COMMUNICATIONS, 8(2), 428–436.

By: J. Narayan n, S. Gupta n, A. Bhaumik, R. Sachan n, F. Cellini* & E. Riedo*

Contributors: J. Narayan n, S. Gupta n, A. Bhaumik, R. Sachan n, F. Cellini* & E. Riedo*

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

2018 journal article

Undercooling driven growth of Q-carbon, diamond, and graphite

MRS COMMUNICATIONS, 8(2), 533–540.

By: S. Gupta n, R. Sachan*, A. Bhaumik n, P. Pant n & J. Narayan n

Contributors: S. Gupta n, R. Sachan*, A. Bhaumik n, P. Pant n & J. Narayan n

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

2017 journal article

A novel high-temperature carbon-based superconductor: B-doped Q-carbon

Journal of Applied Physics, 122(4).

By: A. Bhaumik, R. Sachan & J. Narayan

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

2017 journal article

Conversion of p to n-type reduced graphene oxide by laser annealing at room temperature and pressure

Journal of Applied Physics, 121(12).

By: A. Bhaumik & J. Narayan

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

2017 journal article

Discovery of High-Temperature Superconductivity (T-c=55 K) in B-Doped Q-Carbon

ACS NANO, 11(12), 11915–11922.

By: A. Bhaumik n, R. Sachan n, S. Gupta n & J. Narayan

Contributors: A. Bhaumik n, R. Sachan n, S. Gupta 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
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 article

Fundamental Discovery of Q-Phases and Direct Conversion of Carbon into Diamond and h-BN into c-BN

MECHANICAL AND CREEP BEHAVIOR OF ADVANCED MATERIALS, pp. 219–228.

By: J. Narayan n & A. Bhaumik

author keywords: Carbon phase diagram; Raman spectroscopy; Diamond/c-BN heterostructures
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

High-Temperature Superconductivity in Boron-Doped Q-Carbon

ACS NANO, 11(6), 5351–5357.

By: A. Bhaumik n, R. Sachan n & J. Narayan

author keywords: superconductivity; quenched carbon; Raman spectroscopy; electron energy loss spectroscopy; secondary ion mass spectroscopy
TL;DR: It is proposed that the non-equilibrium undercooling-assisted synthesis method can be used to fabricate highly doped materials that provide greatly enhanced superconducting properties and that the quenching from metallic carbon liquid leads to a stronger electron-phonon coupling. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Novel synthesis and properties of pure and NV-doped nanodiamonds and other nanostructures

MATERIALS RESEARCH LETTERS, 5(4), 242–250.

By: J. Narayan n & A. Bhaumik n

author keywords: NV centers; carbon to diamond conversion; diamond microcrystallites; Raman spectroscopy
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 journal article

Direct conversion of h-BN into c-BN and formation of epitaxial c-BN/diamond heterostructures

Journal of Applied Physics, 119(18).

By: J. Narayan, A. Bhaumik & W. Xu

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

2016 journal article

Discovery of Q-BN and Direct Conversion of h-BN into c-BN and Formation of Epitaxial cBN/Diamond Heterostructures

MRS ADVANCES, 1(37), 2573–2584.

By: J. Narayan n & A. Bhaumik

Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 journal article

Discovery of Q-phases and direct conversion of carbon into diamond and h-BN into c-BN

Advanced Materials & Processes, 174(3), 24–28.

By: J. Narayan, A. Bhaumik & R. Narayan

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

2016 article

Fundamental discovery of new phases and direct conversion of carbon into diamond and hBN into cBN and properties (retraction of vol 47, pg 1481, 2016)

Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Vol. 47A, pp. 4351–4351.

By: J. Narayan & A. Bhaumik

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

2016 journal article

Q-carbon discovery and formation of single-crystal diamond nano- and microneedles and thin films

MATERIALS RESEARCH LETTERS, 4(2), 118–126.

By: J. Narayan n & A. Bhaumik n

author keywords: Q-carbon; Carbon to Diamond Conversion; Diamond Microneedles; Raman Spectroscopy
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 journal article

Research update: Direct conversion of h-BN into pure c-BN at ambient temperatures and pressures in air

APL Materials, 4(2).

By: J. Narayan & A. Bhaumik

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

2016 journal article

Wafer scale integration of reduced graphene oxide by novel laser processing at room temperature in air

Journal of Applied Physics, 120(10).

By: A. Bhaumik & J. Narayan

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

2015 journal article

Novel phase of carbon, ferromagnetism, and conversion into diamond

Journal of Applied Physics, 118(21).

By: J. Narayan & A. Bhaumik

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

2015 journal article

Research update: Direct conversion of amorphous carbon into diamond at ambient pressures and temperatures in air

APL Materials, 3(10).

By: J. Narayan & A. Bhaumik

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

journal article

Fundamental discovery of new phases and direct conversion of carbon into diamond and hBN into cBN and properties

Narayan, J., & Bhaumik, A. Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, 47A(4), 1481–1498.

By: J. Narayan & A. Bhaumik

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

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