A5039112047- Ion-surface interactions and analysis
- Surface Modification and Superhydrophobicity
- Diamond and Carbon-based Materials Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Plasma Diagnostics and Applications
- Fluid Dynamics and Heat Transfer
- Magnetic and transport properties of perovskites and related materials
- Advanced Sensor and Energy Harvesting Materials
- Polymer Nanocomposite Synthesis and Irradiation
- Advanced Memory and Neural Computing
- Electrohydrodynamics and Fluid Dynamics
- Advanced Condensed Matter Physics
- Metal and Thin Film Mechanics
- Corrosion Behavior and Inhibition
- Electronic and Structural Properties of Oxides
- Transition Metal Oxide Nanomaterials
- Graphene and Nanomaterials Applications
- Ferroelectric and Negative Capacitance Devices
- Laser-Plasma Interactions and Diagnostics
- Copper Interconnects and Reliability
- Fluid Dynamics Simulations and Interactions
- Magnetic Properties and Applications
- melanin and skin pigmentation
- Carbon Nanotubes in Composites
University of Illinois Urbana-Champaign
2025
Institute for Plasma Research
2019-2024
Homi Bhabha National Institute
2020-2023
Pandit Deendayal Petroleum University
2017-2020
Bhabha Atomic Research Centre
2019
Abstract The surface wettability of polytetrafluoroethylene (PTFE) was investigated with low energy Ar + ion beam irradiation varied from 300 eV to 800 both at normal and oblique angle incidence (0°–70°) a time few 10 s seconds. A remarkable change in observed, became hydrophobic superhydrophobic just 30 time. systematic increase the contact observed For given threshold time, hierarchical protrusions developed that leads rolling bouncing water droplet even on horizontal PTFE surface. above...
Abstract Production of superhydrophobic polytetrafluoroethylene (PTFE) by Ar plasma etching is challenging as it leads to defluorination, resulting in a hydrophilic surface. The effect radiofrequency power, treatment time, impurity, and surface temperature on plasma‐treated PTFE was investigated for producing large‐area To avoid impurity substrate effects, single electrode‐based arrangement with sacrificial disc behind the specimen used discharge. After 5 min at 100 W, became (water contact...
Fabrication of durable hydrophobic metallic substrate is an emerging area research for the condensation process in many industrial devices because its implementation enhances efficacy devices. In this work, effective and copper (Cu) substrates were fabricated by plasma nano-pattering. Various discharge voltages used to create various types nano-patterns textured on substrates. For 30 min irradiation Argon gas at 500, 650 750 V, morphologies altered such that micro-litre water droplet has...
Abstract Ion beam sputtering (IBS) can induce nanoripple patterns in a short time on variety of materials for wide range applications. In this work, we describe the as well terrace pattern formation by IBS soda-lime glass surfaces and mechanisms leading to such formations. The role ion energy, fluence, incidence angle morphology structural features is systematically explored. For parameter values with energy varying from 600 1500 eV fluence 9.7 × 10 17 2.0 19 ions/cm 2 at fixed 45°,...
Ion beam sputtering, known as potential technique for producing nanoripple on various surfaces having wide range of applications. Along with nanoripple, triangular features are also superimposed, limiting their use some Here we reporting evolution Ge (100) under low energy (300-1000 eV) Xe ion irradiation at room temperature angles incidence (61°-80°) and fluences (5.34 × 1017-8.01 1018ions cm-2). Triangular appear the onset ripple formation disappear when periodicity is lost. These depend...
Abstract This study investigates the formation of facets on Si surface under Xe ion irradiation using an energy 0.5 keV. By examining effects incidence angle (60° –85°), fluence (4.5 × 10 18 to 1.35 19 ions/cm 2 ), and temperature (RT 200 ◦ C), we explore evolution facets. The roughness displays a distinct trend, reaching its peak when is 80°, which indicates faceted structures due sudden change in roughness. Additionally, studies highlight important role enhancing facet arrangement. To...
The effect of oxygen plasma processing on the wettability polytetrafluorethylene (PTFE) surfaces has been studied. In this study, radio frequency (RF) power (50–300 W), exposing time (5–30 min), and working pressure 5 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\times$</tex-math> </inline-formula> 10 notation="LaTeX">$^{-\textrm{2}}$</tex-math> mbar were used to create nanostructures PTFE surfaces. To...
The biggest global challenge in this century is to meet the ever increasing demand for electricity, vehicular fuel and potable water a growing world population with high aspiration better quality of life, while mitigating CO2 other greenhouse gas emission limiting warming temperature rise below 2°C, as per agreement at United Nations Forum Climate Change (UNFCC) Paris December 2015. present paper summarises three ways which nuclear energy contributes solving problems carbon free atmosphere.