A5034557285- Advanced Thermoelectric Materials and Devices
- Magnetic and transport properties of perovskites and related materials
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- Rare-earth and actinide compounds
- Heusler alloys: electronic and magnetic properties
- Salmonella and Campylobacter epidemiology
- Intermetallics and Advanced Alloy Properties
- Advanced Photocatalysis Techniques
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Condensed Matter Physics
- Phase-change materials and chalcogenides
- Thermal Expansion and Ionic Conductivity
- Thermal Radiation and Cooling Technologies
- MXene and MAX Phase Materials
- Semiconductor materials and interfaces
- Bacteriophages and microbial interactions
- Multiferroics and related materials
- Conducting polymers and applications
- Iron oxide chemistry and applications
- Catalytic Processes in Materials Science
- ZnO doping and properties
- Agricultural pest management studies
- Iron-based superconductors research
- Supercapacitor Materials and Fabrication
Toyota Technological Institute
2019-2025
Pennsylvania State University
2022-2024
Gyan Vihar University
2024
Institute of Science and Technology Austria
2023-2024
Japan Science and Technology Agency
2020-2023
Mirai Hospital
2022-2023
Indian Institute of Technology Mandi
2016-2021
Smart Material (Germany)
2021
Govind Ballabh Pant University of Agriculture and Technology
2003-2019
Indian Institute of Technology Bombay
2019
Abstract A cost‐effective and green synthesis method was adopted for the of carbon dots (CDs) using easily available biomass, namely, Triticum (wheat), by varying pyrolysis time. The synthesized CDs are labeled as 1h, 2h, 3h, respectively, where “A” represents raw material, “1h,” “2h,” “3h” denote respective XRD analysis reveals turbostratic nature CDs. size shape samples were visualized HRTEM images. bandgap calculated Tauc's plot determined to be 3.66, 5.08, 4.89 eV respectively. FTIR...
Abstract Most of the best known SnTe‐based materials exhibit an attractive thermoelectric figure merit ( zT ) only at high‐temperature regime, but their performance low‐mid temperature ranges is quite uninspiring, and this discordance necessitates a large gradient (∆ T ≥ 550 K) to effectuate reasonable efficiency, η. Here, transition elements, Ti Zr, that have not been used in past are tried as dopants for SnTe enhanced device/average and/or η reported with lower ∆ ≈ 400 K without requisite...
Thermoelectric (TE) generators enable the direct and reversible conversion between heat electricity, providing applications in both refrigeration power generation. In last decade, several TE materials with relatively high figures of merit (zT) have been reported low- high-temperature regimes. However, there is an urgent demand for high-performance working mid-temperature range (400-700 K). Herein, p-type AgSbTe2 stabilized S Se co-doping are demonstrated to exhibit outstanding maximum figure...
ZnO is a promising candidate for use as an environmentally friendly thermoelectric (TE) material. However, high thermal conductivity leading to poor TE figure-of-merit (zT) needs be addressed achieve significant efficiency commercial applications. Here, we demonstrate that selective enhancement in phonon scattering leads increase the zT of because Al doping and reduced graphene oxide (RGO) encapsulation. These nanocomposites are synthesized via facile scalable method. The incorporation 1 at%...
We present the thermoelectric (TE) properties of LaCoO compound in temperature range 300–600 K. The experimental value Seebeck coefficient () at 300 K is found to be V/K. decreases continuously with increase and reaches V/K electronic TE have also been investigated by combining ab initio structures Boltzmann transport calculations. LSDA plus Hubbard U ( eV) calculation on low spin configuration gives an energy gap eV, which close experimentally reported gap. effective mass holes point nearly...
Thermoelectric (TE) materials have made rapid advancement in the past decade, paving pathway toward design of solid-state waste heat recovery systems. The next requirement process is realization full-scale multistage TE devices medium to high temperature range for enhanced power generation. Here, we report and manufacturing skutterudite (SKD)/half-Heusler (hH) cascaded with 49-couple legs each stage. automated pick-and-place tool employed module fabrication providing overall efficiency...
What happens during the long cycling tests to electroactive material under investigation for application in supercapacitor electrodes? How behaves at molecular and bulk level redox reactions a pace with charge-discharge processes? In order answer fundamental question detailed are must evaluate material's stability claim its suitability practical/ commercial applications. The molecules matrix may or not be prone disintegration tests. parallel, it is also important explain how disintegrates...
Abstract We have studied the origin of zero volume expansion below Curie temperature (Tc), variable range hopping (VRH) behaviour using structural, magnetic, transport and thermal studies on oxygen deficient double perovskite NdBaCo2O5+del (del= 0.65). The valence state Co ions possible properties exhibited by such compound were electronic structure calculations for del= 0.75. Careful investigation shows that stabilizes in tetragonal (P4/mmm) having 2apx2apx2ap (222) superstructure, where ap...
Friction and wear behavior of silicon carbide based aluminum metal matrix composite alloy have been studied for sliding speeds 3.14 m/s 3.77 load range from 10 N to 30 under dry lubricated environment, respectively. The experiments were performed on pin disk tribometer (Make: DUCOM). was fabricated by stir casting process has several challenges like inferior bonds interfacial reaction products which will deteriorate the mechanical tribological properties. Therefore, addition reactive...
In the present work, we report experimental thermopower (α) data for ZnV2O4 in high temperature range 300-600 K.The values of α are found to be ∼184 and ∼126 µV/K at ∼300 ∼600 K, respectively.The dependent behavior is almost linear measured range.In order understand large positive observed this compound, have also investigated electronic thermoelectric properties by combining ab-initio structures calculations with Boltzmann transport theory.Within local spin density approximation plus...
With the development of application wireless sensor nodes (WSNs), need for energy harvesting is rapidly increasing. In this study, we designed and fabricated a robust monolithic thermoelectric generator (TEG) using simple, low-energy, low-cost device fabrication process. Our consists Ag2S0.2Se0.8 Bi0.5Sb1.5Te3 as n-type p-type legs, respectively, while empty space between legs was filled with highly dense, flexible, thin Ag2S that serves both an insulating spacer shock absorber, which...