A
Ajay Dhar
Researcher at Academy of Scientific and Innovative Research
Publications - 96
Citations - 2969
Ajay Dhar is an academic researcher from Academy of Scientific and Innovative Research. The author has contributed to research in topics: Thermoelectric effect & Spark plasma sintering. The author has an hindex of 28, co-authored 94 publications receiving 2355 citations. Previous affiliations of Ajay Dhar include Council of Scientific and Industrial Research & Queen's University.
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Giant enhancement in thermoelectric performance of copper selenide by incorporation of different nanoscale dimensional defect features
Bhasker Gahtori,Sivaiah Bathula,Sivaiah Bathula,Kriti Tyagi,M. Jayasimhadri,A. K. Srivastava,Sukhvir Singh,R. C. Budhani,Ajay Dhar +8 more
TL;DR: In this paper, a simple experimental strategy for enhancing the figure-of-merit (ZT) of thermoelectric materials by introducing different kinds of defect features, including nano-porosity, in a range of nano to meso-scale dimensions, employing spark plasma assisted (SPS) reaction sintering of mechanically alloyed nanopowders.
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Optical properties of reduced lithium niobate single crystals
Ajay Dhar,Abhai Mansingh +1 more
TL;DR: In this paper, the optical transmission of LiNbO3 single crystals has been measured in the wavelength range 200-900 nm, for different degrees of reduction, to study the effect of reduction on the optical characteristics near the fundamental absorption edge.
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Enhanced thermoelectric figure-of-merit in spark plasma sintered nanostructured n-type SiGe alloys
Sivaiah Bathula,M. Jayasimhadri,Nidhi Singh,A. K. Srivastava,Jiji Pulikkotil,Ajay Dhar,R. C. Budhani +6 more
TL;DR: In this article, a significant enhancement in the thermoelectric figure-of-merit of phosphorous doped nanostructured n-type Si80Ge20 alloys, which were synthesized employing high energy ball milling followed by rapid heating using spark plasma sintering, was reported.
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Doping and temperature dependence of thermoelectric properties in Mg 2 (Si,Sn)
Jiji Pulikkotil,David J. Singh,Sushil Auluck,M. Saravanan,Dinesh K. Misra,Ajay Dhar,R. C. Budhani +6 more
TL;DR: In this paper, the Boltzmann transport theory was used to investigate the electrical properties of thermoelectric Mg${}_{2}$Si, Mg{}_{ 2}$Sn, and a supercell model of the 50-50 alloy.
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Mg3Sb2-based Zintl compound: a non-toxic, inexpensive and abundant thermoelectric material for power generation
Anil Bhardwaj,A. Rajput,A. K. Shukla,Jiji Pulikkotil,Avanish Kumar Srivastava,Ajay Dhar,Govind Gupta,Sushil Auluck,Dinesh K. Misra,R. C. Budhani +9 more
TL;DR: In this paper, a proof of principal has been established experimentally in the present work for a Zintl compound of Mg3Sb2 and its derivative of isoelectronically Bi doped Bi; Mg 3Sb 2−xBix (0 ≤ x ≤ 0.4) alloys in Mg