- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Supercapacitor Materials and Fabrication
- Semiconductor materials and interfaces
- Conducting polymers and applications
- Advanced Semiconductor Detectors and Materials
- Copper-based nanomaterials and applications
- Advancements in Battery Materials
- 2D Materials and Applications
- Advanced battery technologies research
- Metal-Organic Frameworks: Synthesis and Applications
- Graphene research and applications
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Glass properties and applications
- Electrochemical sensors and biosensors
- Nonlinear Optical Materials Research
- Nanowire Synthesis and Applications
- Semiconductor Quantum Structures and Devices
- Nonlinear Optical Materials Studies
- Organic Electronics and Photovoltaics
- Phase-change materials and chalcogenides
- Graphene and Nanomaterials Applications
- Aerogels and thermal insulation
- Electrocatalysts for Energy Conversion
California Institute of Technology
2025
Panjab University
2011-2021
Central Drug Research Institute
2021
University of Delhi
2003
Dibrugarh University
1979-1986
Abstract Microbes inhabiting complex porous microenvironments in sediments and aquifers catalyze reactions that are critical to global biogeochemical cycles ecosystem health. However, the opacity complexity of sediment rock matrices have considerably hindered study microbial processes occurring within these habitats. Here we generated microbially-compatible, optically transparent mineral scaffolds visualize investigate colonization activities environments, laboratory settings situ. Using...
Hydrothermal synthesis technique is used to synthesize nanosized NiCo2O4 particles. The as-synthesized particles are structurally characterized by Raman spectroscopy. nanostructure and morphology of the prepared nanoparticles studied Field Effect Scanning Electron Microscopy DC electrical conductivity has been measured in temperature range 303–402 K activation energy calculated. absorbance UV–Visible recorded. absorption spectrum analysis shows that material possesses two direct band gaps,...
Metal-Organic frameworks are the advanced electrode materials for supercapacitors due to their controllable structures and large surface area. Here Ni-MOF has been prepared by hydrothermal method application as material in supercapacitors. The is characterized with help of X-ray diffraction Fourier transforms infrared spectroscopy. electrochemical performance studied 1M LiOH aqueous electrolyte using cyclic voltammetry galvanostatic charge-discharge methods. We get different values specific...
The electrical properties, viz resistivity and I-V characteristics, of evaporated CdSe films sandwiched between two Al electrodes have been studied in situ at 30 degrees C 8*10-6 Torr within the thickness range 2400-2500 AA as function substrate temperature (50-150 C). observed change characteristics could be explained by stoichiometric changes film material disorder thermally films. Space-charge-limited current conduction was on prepared a 150 C.
Thin films of copper (Cu)-doped CdSe are prepared by the physical vapor deposition technique. X-ray diffraction analysis shows that crystallize in hexagonal structure with (100) as preferred orientation. Scanning electron microscope studies reveal grains spherical shape and uniformly distributed all over surface substrates. The transport properties Cu-doped thin have been investigated time-of-flight measurement, steady-state photocarrier grating photoconductivity techniques. temperature...