Sunil Kumar

ORCID: 0000-0001-9429-3809
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About
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Research Areas
  • MXene and MAX Phase Materials
  • Graphene research and applications
  • ZnO doping and properties
  • Chalcogenide Semiconductor Thin Films
  • Quantum Dots Synthesis And Properties
  • Particle accelerators and beam dynamics
  • Plasma Diagnostics and Applications
  • 2D Materials and Applications
  • Magnetic confinement fusion research
  • Ion-surface interactions and analysis
  • Graphene and Nanomaterials Applications
  • Advanced Memory and Neural Computing
  • Copper-based nanomaterials and applications
  • Advanced Sensor and Energy Harvesting Materials
  • Supercapacitor Materials and Fabrication
  • Luminescence Properties of Advanced Materials
  • Magnetic Field Sensors Techniques
  • Advanced Materials and Mechanics
  • Nanowire Synthesis and Applications
  • Microwave Engineering and Waveguides
  • Glass properties and applications
  • Gyrotron and Vacuum Electronics Research
  • Tribology and Wear Analysis
  • Liquid Crystal Research Advancements
  • Advancements in Battery Materials

Babasaheb Bhimrao Ambedkar Bihar University
2025

Ghulam Ishaq Khan Institute of Engineering Sciences and Technology
2024

Institute for Plasma Research
2012-2024

Sejong University
2018-2024

Banaras Hindu University
2024

Rudjer Boskovic Institute
2023

Inter-University Accelerator Centre
2014-2022

Rajiv Gandhi Technical University
2020-2021

Government of the Republic of Korea
2020

Homi Bhabha National Institute
2019

An ultrahigh capacity supercapacitor is fabricated using a nano-layered MXene as an active electrode material, and Ni-foil used current collector. The high-quality Ti3C2Tx obtained from supernatant during etching washing processes improves the specific capacitance significantly. As another strategy, surface of engineered by coating chemical vapor deposition-grown graphene. graphene grown directly on collector, forming structure Ti3C2Tx/graphene/Ni. passivation collectors has high impact...

10.1038/s41598-020-80799-9 article EN cc-by Scientific Reports 2021-01-12

Among various available materials used in transparent and flexible devices, MXenes are attracting attention as a brand-new candidate this category. Ti3C2Tx MXene 2D material has exceptional properties, making it potential having numerous applications different areas. Because of its high conductivity, can be conducting electrodes (TCEs). In study, the etched by highly concentrated acid at 50 °C,were spin-coated on polyethylene terephthalate (PET) film annealed moderate temperatures up to 170...

10.1021/acsami.1c12100 article EN ACS Applied Materials & Interfaces 2021-08-19

This research aims to study the effect of objective and subjective weighting methods in multi-attribute decision-making (MADM) then develop a systematic framework for selecting best natural fiber-reinforced friction composite automobile braking applications. Therefore, sixteen composites with varying weight amounts (5, 10, 15, 20 wt%) pineapple, ramie, hemp, banana fibers were fabricated evaluated tribological properties. The experimental results, such as coefficient, fade-recovery...

10.1016/j.polymertesting.2022.107873 article EN cc-by-nc-nd Polymer Testing 2022-11-14

It is of immense interest to improve the power conversion efficiency graphene/silicon Schottky junction solar cells. The ultrathin graphene has essential properties, such as tunable work function increase barrier height and built-in potential for efficient charge transport in photovoltaic devices. Here, we use plasma-enhanced CVD grow directly on planar n-type silicon fabricate cells compatible industrial-level applications. A key component our accomplishment optimization grown, continuous...

10.1016/j.carbon.2019.03.079 article EN cc-by Carbon 2019-03-25

A vacuum-coupling technique is suggested to fabricate a glass-based PDLC, without using roll-to-roll process, improve the optical properties.

10.1039/d0ra05911k article EN cc-by-nc RSC Advances 2020-01-01

Polymer-dispersed liquid crystals (PDLCs), an indispensable class of electrically switchable materials, where nano- or microsized crystal (LC) droplets are phase-separated from the polymer matrix, have been widely used in fabrication highly efficient and systematic smart windows. In this paper, we explored effect photoinitiator concentration on morphology electro-optical properties PDLC films based thiol acrylates. We prepared using various concentrations photoinitiator, while keeping LC...

10.1021/acsaem.2c00623 article EN ACS Applied Energy Materials 2022-06-03

Organic solar cells (OSCs) have several advantages over conventional inorganic cells, including lower cost and greater flexibility.

10.1039/d3tc01816d article EN Journal of Materials Chemistry C 2023-01-01

This review explores factors influencing MXene oxidation and a range of shielding strategies to prevent oxidation. These include surface passivation, use antioxidants, organic solvents, inert atmospheres, ionic liquids, etc.

10.1039/d4tc00884g article EN Journal of Materials Chemistry C 2024-01-01

We have studied liquid crystals (LCs) and acrylate-assisted thiol-ene compositions to synthesize dye based colorful polymer dispersed (PDLCs) without using a photo-initiator for smart-windows applications. A typical PDLC mixture was prepared by mixing LCs with UV-curable monomers, which included triethylene glycol diacrylate (TEGDA), trimethylolpropane diallyl ether (TMPDE, di-functional ene monomer), tris(3-mercaptopropionate) (TMPTMP, thiol as cross-linker), dichroic dye. The ratios of the...

10.1039/c9ra00729f article EN cc-by RSC Advances 2019-01-01

Due to its semiconducting nature, controlled growth of large-area chemical vapor deposition (CVD)-grown two-dimensional (2D) molybdenum disulfide (MoS2) has a lot potential applications in photodetectors, sensors, and optoelectronics. Yet the controllable, large-area, cost-effective highly crystalline MoS2 remains challenge. Confined-space CVD is very promising method for manner. Herein, we report large-scale with different morphologies using NaCl as seeding promoter confined-space CVD....

10.1021/acsomega.2c03108 article EN cc-by-nc-nd ACS Omega 2022-08-22

This paper presents an analysis of the stability equilibrium positions two artificial satellites system connected by light, flexible and elastic long tether under combined effect several classical perturbative forces in elliptical orbit. The may be either conducting or non-conducting. In this study, it is assumed to non-conducting nature. We have treated problem with taking five acting simultaneously on system. Among these perturbations, three perturbations exist due Earth’s influences:...

10.3329/jsr.v17i1.71710 article EN cc-by-sa Journal of Scientific Research 2025-01-01

Studies on interaction of graphene with radiation are important because nanolithographic processes in graphene-based electronic devices and for space applications. Since the properties highly sensitive to defects number layers sample, it is desirable develop tools engineer these two parameters. We report swift heavy ion (SHI) irradiation-induced annealing purification effects films, similar that observed our studies fullerenes carbon nanotubes (CNTs). Raman after irradiation 100-MeV Ag ions...

10.1186/1556-276x-9-126 article EN cc-by Nanoscale Research Letters 2014-03-17

In this letter, we report radiation stability of graphene under extreme condition high energy density generated by 150 MeV Au ion irradiation. The experiment reveals that is resistant for irradiation at 1014 ions/cm2 ions. It significant to note annealing effects are observed lower fluences whereas defect production occurs higher but crystallinity retained. Our results demonstrate applicability based devices in environment and space applications.

10.1063/1.4897004 article EN Applied Physics Letters 2014-09-29
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