A5026394469- Diamond and Carbon-based Materials Research
- Plasma Diagnostics and Applications
- Graphene research and applications
- Plasma Applications and Diagnostics
- Carbon Nanotubes in Composites
- Metal and Thin Film Mechanics
- Particle accelerators and beam dynamics
- Electrohydrodynamics and Fluid Dynamics
- Aerosol Filtration and Electrostatic Precipitation
- Gyrotron and Vacuum Electronics Research
- Dust and Plasma Wave Phenomena
- Semiconductor materials and devices
- Advancements in Battery Materials
- Ion-surface interactions and analysis
- Cultural Heritage Materials Analysis
- Advanced Welding Techniques Analysis
- COVID-19 diagnosis using AI
- Hemostasis and retained surgical items
- Hemophilia Treatment and Research
- Power Transformer Diagnostics and Insulation
- Venous Thromboembolism Diagnosis and Management
- Infection Control and Ventilation
- Lubricants and Their Additives
- Nuclear Physics and Applications
- Electrostatic Discharge in Electronics
Bhabha Atomic Research Centre
2015-2024
Homi Bhabha National Institute
2022-2024
Department of Atomic Energy
2023
Government Dental College and Hospital
2023
Creative Commons
2023
University of Calcutta
1969
Experimental investigation of cathode erosion in atmospheric pressure hafnium-electrode plasma torches is reported under different environments along with the results numerical simulation. Air, nitrogen and oxygen are gases considered. Distinct differences features plasmas brought out. Cathode images exhibiting a degree measured rates presented detail as function time arc operation current. Physical determined using high precision balance. The changes surface microstructures investigated...
Abstract Yttrium oxide (Y 2 O 3 ) thin films were deposited by microwave electron cyclotron resonance (ECR) plasma assisted metal organic chemical vapour deposition (MOCVD) process using indigenously developed precursors 2,7,7‐trimethyl‐3,5‐octanedionates, commonly known as Y(tod) which synthesized an ultrasound method. A series of varying the oxygen flow rate from 1–9 sccm, keeping all other parameters constant. The coatings characterized X‐ray photoelectron spectroscopy, glancing angle...
The investigations reported here describe the synthesis of carbon nanowalls (CNWs) by microwave electron-cyclotron resonance (ECR) plasma-assisted chemical vapour deposition (PACVD) process without an application external bias to substrate during growth. CNWs were grown on silicon (Si) substrates using hydrogen (H2)/methane (CH4) plasma at 650°C temperature. Nickel (Ni) was used as a catalyst for CNWs. To best our knowledge, this is first report that describes bias-independent growth ECR...
Carbon nanofibers (CNFs) and carbon nanotubes (CNTs) are grown on inconel substrates under two different experimental conditions using atmospheric pressure glow discharge radio-frequency (RF) PECVD process. A specially designed hollow cathode is used for this plasma generation. The growth carried out at 610 660 °C substrate temperatures substrates. Our results show that CNFs CNTs could be synthesized respectively irrespective of pre-treatment methods in either set. HRTEM indicate a...
The Schottky Conjecture (SC) suggests the use of a multiscale cathode to increase local electric field at field-emitting tip. A similar in also occurs when anode is close proximity cathode. authors take advantage these twin effects design compound consisting macroscopic base with much smaller wire-protrusion having an end-cap. Field emission experiments were performed using two different compound-cathode setups, each adjustable-height Kovar wire graphene nanowalls deposition as end-cap, and...
Emissive probe diagnostics in saturated floating potential mode was carried out RF plasmas of argon (Ar)–methane (CH4) and Ar–CH4–hexa methyl disiloxane (HMDSO). These are used for the deposition diamond-like carbon (DLC) SiOx-containing DLC films, respectively. While performing experiments it found that characteristics had two saturation regions instead one. The same measurements when repeated Ar Ar–N2 showed a single as expected. first again anomaly. experimental findings question validity...
Carbon nanowalls (CNWs) have been synthesized by electron-cyclotron resonance chemical vapour deposition (ECR-CVD) method on Si substrates. During deposition, processing gas compositions were varied to improve growth rate and it was found that replacing inflammable H2 safer cheaper N2 improves of CNWs. Energy dispersive x-ray spectroscopy Fourier transform Infra-red results showed did not take part in bond formation. Emissive probe diagnostics increasing precursor 90% total mixture increases...
Atmospheric pressure cold plasma generated using a radio frequency hollow cathode (RFHC) device recently showed its potent virucidal characteristics. For this purpose, the atmospheric of Ar was with specially designed electrode RF (13.56 MHz) power. In order to establish correlation between species and activity, systematic optical emission spectroscopy (OES) investigations were conducted on plasma. OES studies revealed that shows important in ultraviolet (UV) region reactive oxygen (ROS)...