A5029841557- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Nuclear Materials and Properties
- Radioactive element chemistry and processing
- Thermal properties of materials
- Laser-induced spectroscopy and plasma
- Advanced Thermodynamics and Statistical Mechanics
- Laser Material Processing Techniques
- Thermal Radiation and Cooling Technologies
- Welding Techniques and Residual Stresses
- Chemical Synthesis and Characterization
- Nuclear Physics and Applications
- Graphite, nuclear technology, radiation studies
- 2D Materials and Applications
- Nuclear reactor physics and engineering
- Extraction and Separation Processes
- Hydrogen embrittlement and corrosion behaviors in metals
- Heusler alloys: electronic and magnetic properties
- Nuclear materials and radiation effects
- Advanced Surface Polishing Techniques
- Magnetism in coordination complexes
- X-ray Spectroscopy and Fluorescence Analysis
- Corrosion Behavior and Inhibition
- Non-Destructive Testing Techniques
- Additive Manufacturing Materials and Processes
Bhabha Atomic Research Centre
2014-2025
Homi Bhabha National Institute
2021-2023
SRM Institute of Science and Technology
2022
Indian Institute of Technology Bombay
2022
M. P. Shah Medical College
2021
Bhabha Atomic Research Center Hospital
2013-2019
Max Planck Institute for Intelligent Systems
2012-2014
Max Planck Society
2012-2013
University of South Florida
2002
Clean Energy (United States)
2002
Silicon germanium alloys (Si80Ge20) have been used in thermoelectric generators for deep space missions to convert radioisotope heat into electricity. This work demonstrates the highest value of figure-of-merit (ZT) ∼1.84 at 1073 K n-type SiGe nanostructured bulk alloys, which is 34% higher than reported record alloys. The optimized samples exhibit a Seebeck coefficient ∼284 μV K−1, resistivity ∼45 μΩ m and thermal conductivity ∼0.93 W m−1 K−1 K. main contributing factor enhanced ZT very low...
The efficient conversion of heat into electricity using a thermoelectric approach requires high performance materials with the figure merit ZT ≥ 1. Here we report on bulk CuCrSe2, which exhibits very ∼ 1 at 773 K. titled compound an electrical resistivity ∼2.8 mΩ cm, Seebeck coefficient ∼160 μV K−1, together low thermal conductivity ∼7 mW cm−1 K−1 CuCrSe2 is attributed to phonon scattering by various sources such as (i) superionic Cu ions between CrSe2 layers, (ii) nanoscale precipitates in...
Recent studies have shown that thermoelectric materials exhibit a high figure-of-merit if it consists of hierarchically organized microstructures significantly lower the lattice thermal conductivity without any appreciable change in power factor. Here, we report new class (AgCrSe2)0.5(CuCrSe2)0.5 nano-composites synthesized via vacuum hot pressing mixture constituents, which naturally phonon scattering centers multiscale hierarchical fashion, i.e. atomic scale disorder, nanoscale amorphous...
The majority of industrial, automobile processes, electrical appliances emit waste heat in the low-temperature range (<573 K), hence efficient thermoelectric materials operating this are highly needed. Bismuth telluride (Bi2Te3) based alloys conventional material for application. pure Bi2Te3 sample synthesized work exhibits n-type conduction. We demonstrate that by small doping Pb at Bi site a transition transport form n- to p-type is observed. figure-of-merit (ZT) ~0.47 and optimized...
Among the various separation technologies used to treat radioactive wastes, membrane have been chosen in this article since they many advantages over conventional processes. Membrane technology can be classified into different processes and, for each process, progress made till date decontamination of water is presented. The new directions are shown by considering advances manufacturing and Thus, combined efforts researchers who engaged process design nuclear waste treatment were...
The synergistic effect of decoupled thermoelectric parameters on the enhanced power output a unicouple TEG.
Abstract Increasing the Te content in stoichiometric Bi 0.5 Sb 1.5 3 facilitates effective control over anti-site defects and nanostructure; however, arresting excess host matrix is challenging. Herein, we report success of a saturation-annealing treatment vacuum, followed by air-quenching as promising approach for synthesizing high figure-of-merit ( zT ) +xTe (x = 0, 2, 5 10 wt%) materials. A remarkably high-power factor α 2 σ ~ 6 mW at 300 K) achieved p -type + wt% composition due to...
Sustainability of thermoelectric parameter in operating temperature range is a key consideration factor for fabricating generator or cooler. In present work, we have studied the stability Cu2Se within 50-800°C. Temperature dependent Seebeck coefficients and electrical resistivity measurement are performed under three continuous thermal cycles. X-ray diffraction pattern shows presence mixed cubic-monoclinic phase bare pellet which transforms to pure α-Cu2Se with repeating cycle. Significant...
SnTe exhibits very low Seebeck coefficient along with high electrical–thermal conductivities owing to hole concentration that results from intrinsic Sn vacancies. All these unfavorable thermoelectric parameters restrict pristine becoming an outstanding material. In this work, we demonstrate the improvement in figure-of-merit of through situ creation Te nanoinclusions matrix. We have intentionally added excess stoichiometric Sn/Te (1:1) for synthesis SnTe. During solidification melt, liquid...
Mixed ion–electron conductor Ag2Se is an n-type semiconductor owing to the intrinsic Se vacancies. By reducing vacancies, has been demonstrated as a potential environment-friendly thermoelectric material for near room temperature application. In present work, Al addition was found be highly beneficial improving properties of Ag2Se. Ag1.95Al0.05Se, large enhancement in charge carrier mobility (1127 cm2/V s) witnessed due formation Se-rich Ag2Se1.02 phase with improved grain connectivity...
We prepared a new extraction chromatography resin by coating diglycolamide (DGA) ligand having three DGA moieties tethered to triaza-9-crown-3 scaffold (TAM-3-DGA) on an inert solid support. This was evaluated for the separation of actinides and lanthanides from moderate acid solutions 0.01–6 M HNO3. The distribution coefficient (Kd) values trivalent tetravalent (Am3+, Np4+, Pu4+) were large enough (>1 × 104 mL/g) between 2 6 HNO3 its real application in separating these minor actinides....