Publications by authors named "V Ramachandra Theja"

Article Synopsis
  • * BiTe-based compounds are commonly used in commercial thermoelectric devices, but their reliance on scarce and toxic tellurium limits broader use.
  • * MgSb compounds are emerging as a promising alternative, showing enhanced performance through techniques like optimizing carrier concentration and manipulating scattering mechanisms.
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Article Synopsis
  • Aging and genetic disorders in the human brain impair cognitive functions, with challenges in reversing these effects through current brain-computer interfaces (BCI).
  • A new solution is proposed involving a quantum synaptic device made from BiSeTe, which uses unique quantum properties for artificial synaptic modulation.
  • The device demonstrates its potential effectiveness by successfully adjusting distorted brain signals in real-time, showcasing its ability to treat cognitive dysfunctions linked to aging and neurological disorders.
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Neuromorphic artificial intelligence systems are the future of ultrahigh performance computing clusters to overcome complex scientific and economical challenges. Despite their importance, the advancement in quantum neuromorphic systems is slow without specific device design. To elucidate biomimicking mammalian brain synapses, a new class of quantum topological neuristors (QTN) with ultralow energy consumption (pJ) and higher switching speed (µs) is introduced.

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For decades, the widespread application of thermoelectric generators has been plagued by two major limitations: heat stagnation in its legs, which limits power conversion efficiency, and inherent brittleness of its constituents, which accelerates thermoelectric generator failure. While notable progress has been made to overcome these quintessential flaws, the state-of-the-art suffers from an apparent mismatch between thermoelectric performance and mechanical toughness. Here, we demonstrate an approach to potentially enhance the power conversion efficiency while suppressing the brittle failure in thermoelectric materials.

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Recently, copper-based chalcogenides, especially sulfides, have attracted considerable attention due to their inexpensive, earth-abundance, nontoxicity, and good thermoelectric performance. CuSbS is one such kind with p-type conductivity and high phase stability for potential medium-temperature applications. In this article, the effect of a multiwalled carbon nanotube (MWCNT) on the thermoelectric parameters of CuSbS is studied.

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