Carbon nanostructures, nanolayers, and their composites

N Slepičková Kasálková, P Slepička, V Švorčík - Nanomaterials, 2021 - mdpi.com
The versatility of the arrangement of C atoms with the formation of different allotropes and
phases has led to the discovery of several new structures with unique properties. Carbon …

Advances in laser-assisted conversion of polymeric and graphitic carbon into nanodiamond films

P Joshi, P Riley, S Gupta, RJ Narayan… - Nanotechnology, 2021 - iopscience.iop.org
Nanodiamond (ND) synthesis by nanosecond laser irradiation has sparked tremendous
scientific and technological interest. This review describes efforts to obtain cost-effective ND …

Electron mobility modulation in graphene oxide by controlling carbon melt lifetime

S Gupta, P Joshi, J Narayan - Carbon, 2020 - Elsevier
The lack of bandgap is a fundamental issue in graphene devices, which can be solved by
fabricating reduced graphene oxide (rGO). However, its device integration is impeded by the …

Q-Carbon as a Corrosion-Resistant Coating

S Karmakar, M Sultana, A Haque - ACS Applied Materials & …, 2023 - ACS Publications
A newly discovered quenched form of carbon, widely known as Q-carbon, thin films are
synthesized by the direct conversion of the amorphous carbon layer using the nanosecond …

Diamond deposition on AlN using Q-carbon interlayer through overcoming the substrate limitations

S Taqy, P Sarkar, MA Hamid, T Pranto, EL Piner… - Carbon, 2024 - Elsevier
Q-carbon, a quenched form of carbon, is a recently discovered carbon structure that has
tremendous properties, compatibility, and potential for use in device fabrication and other …

Synthesis of multifunctional microdiamonds on stainless steel substrates by chemical vapor deposition

P Joshi, A Haque, S Gupta, RJ Narayan, J Narayan - Carbon, 2021 - Elsevier
We report on the synthesis of multifunctional microdiamonds by chemical vapor deposition
(CVD) on 304 and 316 austenitic stainless steel (SS) substrates. The increase in wettability …

Nonequilibrium structural evolution of Q-carbon and interfaces

R Sachan, S Gupta, J Narayan - ACS applied materials & …, 2019 - ACS Publications
Q-carbon is a densely packed metastable phase of carbon formed by ultrafast quenching of
carbon melt in a super-undercooled state. After quenching, diamond tetrahedra are …

Vacancy-Driven Robust Metallicity of Structurally Pinned Monoclinic Epitaxial VO2 Thin Films

A Moatti, R Sachan, S Gupta… - ACS applied materials & …, 2018 - ACS Publications
Vanadium dioxide (VO2) is a strongly correlated material with 3d electrons, which exhibits
temperature-driven insulator-to-metal transition with a concurrent change in the crystal …

Characteristics of Diamond Deposition on Al2O3, Diamond-like Carbon, and Q-Carbon

A Haque, S Gupta, J Narayan - ACS Applied Electronic Materials, 2020 - ACS Publications
We have conducted a comparative study on the deposition of diamond thin film on uncoated
Al2O3, diamond-like carbon (DLC, grown by pulsed laser deposition) film-coated Al2O3 …

Formation of Q-carbon with wafer scale integration

PR Riley, P Joshi, N Khosla, RJ Narayan, J Narayan - Carbon, 2022 - Elsevier
We describe the formation of highly uniform Quenched-carbon (Q-carbon) layers by plasma-
enhanced chemical vapor deposition (PECVD) followed by low-energy Ar+ ion …