Nikhil Malviya

I investigate the thermal transport of heat carriers (phonons) in semiconductor nanodevices by employing quantum mechanics and kinetic theory. I use computational analysis to study the thermal properties of nanoscale systems composed of materials with ultra-high thermal conductivity. This involves solving the governing equation for thermal transport via phonons. Through experimentation, I demonstrate unusual heat transfer phenomena in these systems that are not observed at larger lengthscales.

• [20 October 2024] My work on "Data-driven acceleration of phonon dynamics computations from first principles" secured third place in an oral presentation during the ME Annual Research Symposium 2024 (AR Auditorium, Department of Mechanical Engineering, Indian Institue of Science, Bangalore).

• [24 April 2024] My work on "Failure of the Callaway description of heat flow in boron arsenide and boron antimonide driven by phonon scattering selection rules" got nominated for the best poster award at MRS Spring Meeting 2024 (April 22-26, 2024 in Seattle, Washington)

• [23 April 2024] Presented research work on "Reduced dimensionality of transient phonon transport in ultrahigh thermal conductivity materials" at MRS Spring Meeting 2024 (April 22-26, 2024, in Seattle, Washington)

• [26 March 2024] Received SERB International Travel Support (ITS) grant for MRS Spring Meeting 2024.

• [19 January 2024] Successfully conducted a workshop on "Basic Python Programming and its Applications in Numerical Optimization" in the Department of Civil Engineering at Atria Institute of Technology, Bangalore.

• [5 October 2023] My work on "Failure of the Callaway description of heat flow in boron arsenide and boron antimonide driven by phonon scattering selection rules" got published in Physical Review B.

• [22 September 2023] Presented research work on "Unusual Thermal Transport in Boron Arsenide and Boron Antimonide", during ME Annual Research Symposium 2023, in the Department of Mechanical Engineering at IISc Bangalore (September 22 - 23, 2023).

• [23 April 2023] A pre-print discussing the heat transfer model used for ultra-high thermal conductivity materials and its inadequacy for boron arsenide (BAs) and boron antimonide (BSb) is now accessible on ArXiv: https://lnkd.in/gBGFuvqC

• [31 October 2022] Presented research work on 'Phonon transport in ultra-high thermal conductivity materials beyond the relaxation time approximation', in a poster presentation at Young Investigators Meet on Quantum Condensed Matter Theory - 2022 (October 30 - 31, 2022).

• [30 June 2022] Presented research work on 'Phonon transport in ultra-high thermal conductivity materials beyond the relaxation time approximation', in a poster presentation at ME@75 Research Frontiers Conference, IISc, Bangalore (June 29 - 30, 2022).