Roman Anufriev

Roman Anufriev

CNRS researcher


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.



Ballistic heat

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


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


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.


Quasi-ballistic thermal transport in silicon carbide nanowires

Investigation of the length and temperature scales at which SiC nanowires exhibits quasi-ballistic thermal conduction.

Phonon diffraction and interference using nanometric features

Phonon diffraction and interference patterns are observed at the atomic scale, using molecular dynamics simulations.

Parabolic mirrors collimating and focusing fluxes of thermal phonons

We demonstrate that parabolic surfaces can act as parabolic mirrors for phonons, thus collimating or focusing phonon fluxes in semiconductors.

Impact of nanopillars on phonon dispersion and thermal conductivity of silicon membranes

We report on the fabrication and thermal measurements of silicon films with nanopillars as small as 12 nm in diameter.