Roman Anufriev

Roman Anufriev

CNRS researcher

Biography

I graduated from the Nanotechnology faculty of St. Petersburg Academic University and moved to France, where I did my Ph.D. on optics of semiconductor nanowires at INSA-Lyon. Since 2014, I have been working on thermal physics, first as a postdoc in Nomura group and later project associate professor at the University of Tokyo. Presently, I work as a CNRS researcher at CETHIL. My research is focused on phonon and heat transport in nanostructures. Specifically, I study ballistic thermal conduction in nanowires and phononic crystals for applications in thermoelectrics and microelectronics.

Projects

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Ballistic heat

Investigation of ballistic conduction of phonons and heat in semiconductors at nanoscale.

Thermoelectrics

Improving the thermoelectric performance of silicon-based devices using nanofabrication.

Polaritonics

Theoretical and experimental studies of surface phonon-polaritons

Ray phononics

In this project, I develop a new concept of heat manipulation based on particle properties of phonons"

Wave phononics

Theoretical and experimental studies of coherent heat conduction in phononic crystals.

Nanowire optics

My PhD project about optical properties of quantum dots is nanowires.

Publications

Anisotropy Reversal of Thermal Conductivity in Silicon Nanowire Networks Driven by Quasi-Ballistic Phonon Transport

Inspired by an oriental wave pattern, we investigate anisotropic in-plane thermal conduction in nanoscale silicon phononic crystals with the thermally dead volume.
Byunggi Kim, Félix Barbier-Chebbah, Yohei Ogawara, Laurent Jalabert, Ryoto Yanagisawa, Roman Anufriev, Masahiro Nomura
ACS Nano 18, 15, 10557–10565 (2024).
Project Link

Planar-type SiGe thermoelectric generator with double cavity structure

We design and fabricate a planar-type thermoelectric generator with a double cavity structure.
Soita Koike, Ryoto Yanagisawa, Laurent Jalabert, Roman Anufriev, Masashi Kurosawa, Takao Mori, Masahiro Nomura
Applied Physics Letters 124, 123902 (2024).
Project Link

Quasi-ballistic thermal transport in silicon carbide nanowires

Investigation of the length and temperature scales at which SiC nanowires exhibits quasi-ballistic thermal conduction.
Roman Anufriev, Yunhui Wu, Volz Sebastian, Masahiro Nomura
Applied Physics Letters 124, 022202 (2024).
Project Link

Phonon diffraction and interference using nanometric features

Phonon diffraction and interference patterns are observed at the atomic scale, using molecular dynamics simulations.
Desmarchelier Paul, Nikidis Efstrátios, Roman Anufriev, Tanguy Anne, Nakamura Yoshiaki, Kioseoglou Joseph, Termentzidis Konstantinos
Journal of Applied Physics 135, 015103 (2024).
Project Link
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