A5101549703- Polymer Nanocomposite Synthesis and Irradiation
- Ion-surface interactions and analysis
- Diamond and Carbon-based Materials Research
- Integrated Circuits and Semiconductor Failure Analysis
- Nonlinear Optical Materials Studies
- Conducting polymers and applications
- Metal and Thin Film Mechanics
- Polymer Nanocomposites and Properties
- ZnO doping and properties
- Fullerene Chemistry and Applications
- Analytical Chemistry and Sensors
- Laser-Ablation Synthesis of Nanoparticles
- Gold and Silver Nanoparticles Synthesis and Applications
- Dielectric materials and actuators
- Thin-Film Transistor Technologies
- Ferroelectric and Piezoelectric Materials
- Health Systems, Economic Evaluations, Quality of Life
- Acoustic Wave Resonator Technologies
- Glass properties and applications
- Copper-based nanomaterials and applications
- Quantum Dots Synthesis And Properties
- Microwave Dielectric Ceramics Synthesis
- Silicon and Solar Cell Technologies
- Chalcogenide Semiconductor Thin Films
- Advanced Sensor Technologies Research
Kurukshetra University
2016-2025
Sharda University
2025
Malaviya National Institute of Technology Jaipur
2019
University of Southern Denmark
2013-2016
Inter-University Accelerator Centre
2011
Punjabi University
2008
University of Liverpool
2003
Laser Science & Technology Centre
1981
University of Calgary
1972
Ministry of Defence
1969
In this study, zinc telluride (ZnTe) films were grown on quartz substrates at room temperature, 300 °C, 400 500 and 600 °C using RF sputtering. The thickness of the has been found to decrease from 940 nm temperature 200 with increasing substrate temperature. structural investigation grazing incidence angle X-ray diffraction revealed that deposited are amorphous; those other temperatures polycrystalline a cubic zincblende structure preferred orientation along [111] direction. An increase in...
Abstract Silicon nitride (Si 3 N 4 ) films are valued for their exceptional properties, making them a key focus in industrial and scientific research. Si of thicknesses 200,400, 600 nm deposited on substrate using radio‐frequency (RF) sputtering then annealed one hour at temperatures 1000 & 1200 °C nitrogen atmosphere. The alterations structural, morphological optical characteristics assessed. Raman Spectroscopy reveals nonlinear variation Full width half maximum (FWHM) the peaks with...
Molybdenum (Mo) thin films have extensive applications in energy storage devices and photovoltaic solar cells because of their remarkable thermal stability, high melting point, chemical inertness. In the present study, Mo different thicknesses (150, 200, 250, 300 nm) been deposited on Si(100) substrates via radio frequency sputtering an argon atmosphere at room temperature. Some these implanted with 1 × 10 17 N 2 + ·cm −2 30 keV using a current density 4 µA·cm . Surface morphology...
The influence of Ar+ implantation induced disordering in the surface layers CR-39 polymer on its optical properties and hardness has been studied. specimens were implanted at 130 keV to doses 5 × 1014, 1 1015, 1016 cm−2. structural behavior pre- postimplanted was investigated using UV-Visible, Raman, x-ray diffraction techniques. Formation disordered graphitelike structures polycarbonate observed Raman UV-Visible spectroscopy. A significant increase value disorder content (Urbach energy)...
The effect of nitrogen ion implantation has been examined in transparent surfaces CR-39 polymer. Samples were implanted with 100keV N+ ions to various doses ranging from 1014to1017cm−2. chemical and structural changes the specimens performed using Raman spectroscopy glancing angle x-ray diffraction. Ultraviolet-visible absorption analysis indicates a drastic decline optical band gap 3.50eV virgin sample 0.80eV at an dose 1017ionscm−2.
In this paper, we present the analysis of dielectric (dielectric constant, loss, a.c. conductivity) and electrical properties (I–V characteristics) pristine nitrogen ion implanted polycarbonate. The samples polycarbonate were with 100 keV N+ ions fluence ranging from 1 × 1015 to 1017 cm−2. measurements these performed in frequency range kHz MHz. It has been observed that constant decreases whereas loss conductivity increases increasing fluence. An real imaginary parts permittivity elucidated...
The refractive index tailoring in the surface layers of polycarbonate has been carried out with low energy nitrogen ion implantation. specimens were implanted at 100 keV ions fluence range 1×1015−to 1×1017 cm−2. values virgin and have calculated from diffuse reflectivity spectrum obtained by using UV-visible spectroscopy. indices found to increase implantation dose wavelength (in visible region). At 400 nm changes 1.58 (for virgin) nearly 2.34 (at an cm−2). These further correlated observed...
Structural and optical properties of Ag-glass nanocomposite, synthesized by the combined use vacuum deposition method subsequent thermal annealing have been studied using UV-Visible absorption spectroscopy, Field emission scanning electron microscopy (FE-SEM) along with Energy dispersive analysis X-rays (EDAX), Transmission (TEM) Photoluminescence spectroscopy. nanocomposites were depositing Ag on glass slides resulting samples annealed at various temperatures from 300°C to 550°C for 1 hour....
In the present study, we aim to investigate self‐organization of unexplored silicon carbide (SiC) film surfaces under 30 keV oblique Ar+ ions irradiation and hence unprecedented tailoring optical electrical characteristics with view their uses in solar cells, gratings nano‐ micro‐scale devices. The surface morphology mainly consisted triangular shaped nanoparticles which evolves into nanoscale ripple structures an alignment parallel projection ion beam direction. For first time, have...
A detailed analysis of absorption, transmission, and reflection spectra virgin gamma-irradiated (50–800 kGy) polycarbonate polymer reveals that both indirect as well direct band gap coexist in samples. The has been found to decrease from 3.00 eV (virgin sample) 2.78 at a dose 800 kGy. emission behaviour indicates clear-cut peak the visible region –466 nm samples with gamma 400 kGy above. refractive index decreasing tendency result increasing dose.
ABSTRACT SiC‐PVA nanocomposite films, synthesized using solution‐casting technique were structurally characterized X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. Morphological studies of the films carried out Transmission electron microscopy (TEM) Scanning (SEM). TEM analysis confirms that size SiC nanocrystals present in PVA matrix are 23 ± 9 nm, which is consistent with calculated XRD. further for their thermal electrical properties....
In this report, an attempt has been made to investigate the morphological evolution of nanoscale surface ripples on aliphatic (polypropylene, PP) and aromatic (polyethylene terephthalate, PET) polymeric substrates irradiated with 50 keV Ar+ ions. The specimens were sputtered at off normal incidence 30° 5 × 1016 cm−2. topographical features structural behavior studied using Atomic Force Microscopy (AFM) UV-Visible spectroscopy techniques, respectively. Stopping Range Ions in Matter...