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 optical properties 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. In 2022, I passed the contest to enter The French National Centre for Scientific Research (CNRS), and presently, I work as a CNRS researcher at LIMMS, Tokyo. 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

When phononic crystals fail: Spatial and spectral limits of phonon interference

We report on experimental observations of a gradual breakdown of phonon interference in two-dimensional nanoscale phononic crystals.

Scalable Thermal Engineering via Femtosecond Laser-Direct-Written Phononic Nanostructures

A transformative platform bridging laboratory-scale phononic nanostructures and industrial-scale thermal engineering is demonstrated via femtosecond laser-induced periodic surface structures .

Ultrahigh-temperature vacuum prober for electrical and thermal measurements

We develop an ultrahigh-temperature vacuum probe station (UHT-VPS) featuring a sample holder heated by thermal radiation from a silicon carbide heater.

Hypersonic acoustic wave control via stealthy hyperuniform phononic nanostructures

We experimentally demonstrate surface acoustic wave control using a hyperuniform arrangement of gold nanopillars on a lithium niobate layer.