ORCID Profile
0000-0002-6300-3888
Current Organisation
University of Newcastle Australia
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Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3MA00134B
Abstract: Laser nanoengineering the CNT/GNP heterogenous structure for robust thermal interface capable of swift heat transfer is presented.
Publisher: American Chemical Society (ACS)
Date: 10-2021
Publisher: Springer Science and Business Media LLC
Date: 06-06-2022
DOI: 10.1186/S40580-022-00317-7
Abstract: Quantum flatland i.e., the family of two dimensional (2D) quantum materials has become increscent and has already encompassed elemental atomic sheets (Xenes), 2D transition metal dichalcogenides (TMDCs), 2D metal nitrides/carbides/carbonitrides (MXenes), 2D metal oxides, 2D metal phosphides, 2D metal halides, 2D mixed oxides, etc. and still new members are being explored. Owing to the occurrence of various structural phases of each 2D material and each exhibiting a unique electronic structure bestows distinct physical and chemical properties. In the early years, world record electronic mobility and fractional quantum Hall effect of graphene attracted attention. Thanks to excellent electronic mobility, and extreme sensitivity of their electronic structures towards the adjacent environment, 2D materials have been employed as various ultrafast precision sensors such as gas/fire/light/strain sensors and in trace-level molecular detectors and disease diagnosis. 2D materials, their doped versions, and their hetero layers and hybrids have been successfully employed in electronic hotonic/optoelectronic/spintronic and straintronic chips. In recent times, quantum behavior such as the existence of a superconducting phase in moiré hetero layers, the feasibility of hyperbolic photonic metamaterials, mechanical metamaterials with negative Poisson ratio, and potential usage in second/third harmonic generation and electromagnetic shields, etc. have raised the expectations further. High surface area, excellent young’s moduli, and anchoring/coupling capability bolster hopes for their usage as nanofillers in polymers, glass, and soft metals. Even though lab-scale demonstrations have been showcased, large-scale applications such as solar cells, LEDs, flat panel displays, hybrid energy storage, catalysis (including water splitting and CO 2 reduction), etc. will catch up. While new members of the flatland family will be invented, new methods of large-scale synthesis of defect-free crystals will be explored and novel applications will emerge, it is expected. Achieving a high level of in-plane doping in 2D materials without adding defects is a challenge to work on. Development of understanding of inter-layer coupling and its effects on electron injection/excited state electron transfer at the 2D-2D interfaces will lead to future generation heterolayer devices and sensors.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CP01712A
Abstract: Borophene (B), with remarkably unique chemical binding in its crystallographic structural phases including anisotropic structures, theoretically has high Young's modulus and thermal conductivity. Moreover, it is metallic in nature, and has recently joined the family of two-dimensional (2D) materials and is poised to be employed in flexible hetero-layered devices and sensors in fast electronic gadgets and excitonic devices. Interfacial coupling helps in idual atomic sheets synergistically work in tandem, and is very crucial in controllable functionality. Most of the microscopic and spectroscopic scans reveal surface information however, information regarding interfacial coupling is difficult to obtain. Electronic signatures of dynamic inter-layer coupling in B/boron nitride (BN) and B/molybdenum disulfide (MoS
Publisher: Springer Science and Business Media LLC
Date: 10-11-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CY01005D
Abstract: 2D hybrid sheets of zinc ferrite and graphitic carbon nitride were explored for their application as a UV catalyst for the degradation of ciprofloxacin.
Publisher: American Chemical Society (ACS)
Date: 18-11-2022
Publisher: Springer Science and Business Media LLC
Date: 04-02-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA00318C
Abstract: Novel structured thiadiazole-attached carbon nitrides are first synthesized via sintering 5-amino-1,3,4-thiadiazole-2-thiol, demonstrating excellent performances towards photocatalytic H 2 evolution under visible light irradiation.
Publisher: American Chemical Society (ACS)
Date: 28-08-2020
Publisher: American Chemical Society (ACS)
Date: 19-04-2021
Publisher: American Chemical Society (ACS)
Date: 12-07-2022
DOI: 10.1021/ACS.JPCLETT.2C01540
Abstract: Xenes, i.e., monoelemental two-dimensional atomic sheets, are promising for sensitive and ultrafast sensor applications owing to exceptional carrier mobility however, most of them oxidize below 500 °C and therefore cannot be employed for high-temperature applications. 2D gold, an oxidation-resistant plasmonic Xene, is extremely promising. 2D gold was experimentally realized by both atomic layer deposition and chemical synthesis using sodium citrate. However, it is imperative to develop a new facile single-step method to synthesize 2D gold. Here, liquid-phase synthesis of 2D gold is demonstrated by microwave exposure to auric chloride dispersed in dimethylformamide. Microscopies (AFM and high-resolution TEM), spectroscopies (Raman, UV-vis, and X-ray photoelectron), and X-ray diffraction establish the formation of a hexagonal crystallographic phase for 2D gold. 2D-2D hybrids of 2D gold have also been synthesized and investigated for electronic/optoelectronic behaviors and SERS-based molecular sensing. DFT band structure calculation for 2D gold and its hybrids corroborates the experimental findings.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CS00213F
No related grants have been discovered for PRASHANT KUMAR.