Roman Anufriev
Research
2023 – 2024 · CNRS researcher at CETHIL, France
2021 – 2023 · Project Associate Professor at the University of Tokyo
2018 – 2021 · Project Research Associate at the University of Tokyo
2014 – 2018 · PostDoc at the University of Tokyo
2010 – 2013 · PhD at Lyon Nanotechnology Institute (INL)
2009 – 2010 · Master at Saint Petersburg Academic University
Education
Ph.D. · Institut National des Sciences Appliquées (INSA) de Lyon · 2013
Thesis:
“Optical properties of III-V nanowire heterostructures grown on silicon substrates”.
M.S. · St. Petersburg Academic University · 2010
Thesis:
“Simulation of Tamm plasmon polaritons in multilayered cylindrical structures”.
Major: Electronics and microelectronics.
B.S. · St. Petersburg Polytechnic University · 2008
Major: Technical physics.
Skills
- Nanofabrication methods (EB lithography, RIE, PVD, etc.)
- Time-domain thermoreflectance (TDTR, FDTR)
- Brillouin light scattering (BLS) spectroscopy
- Photoluminescence spectroscopy (PL, Micro-PL, PLE, TR-PL)
- Electron and atomic force microscopy (AFM)
- Ray-tracing, FEM, and quantum simulations (Python, Matlab, Comsol, and Nextnano)
- Background in the solid state physics (semiconductor optics, nanoscale heat transport, phononics)
- English (C2), French (B1-B2), Polish (A1-A2), Japanese (N5), Russian (C2)
More details on the skills are available here.
Grants and awards
2020 · Best Review Award from JSPS
2019 · The Junior Prize of the IPPA
2019 · PRESTO JST grant (€ 300 000)
2018 · Kakenhi JSPS grant (€ 23 000)
2017 · JSAP Young Author Award
2016 · Certificate of merit for “Thermal Engineering Best Paper” from the JSME
2016 · Postdoctoral scholarship of the JSPS (€ 20 000)
Highlighted publications
Full list of publications is available here.
We fabricated single crystalline SiC nanostructures, including nanomembranes, nanowires, and phononic crystals, and systematically studied their thermal properties and phonon mean free path. Our measurements show that the thermal conductivity of nanostructures is several times lower than in bulk and the values scale proportionally to the narrowest dimension of the structures.
Anufriev et al., NPG Asia Materials 14, 35 2022
Ray phononics: thermal guides, emitters, filters, and shields powered by ballistic phonon transport
This conceptual paper introduced ray phononics as an alternative paradigm of heat conduction manipulations. We demonstrated how the directional phonon fluxes occur and how they can be used to create various devices based on ballistic heat conduction. This work is expected to open a new research direction in phononics.
Anufriev and Nomura, Materials Today Physics 15, 100272, 2020
Quasi-ballistic heat conduction due to Lévy phonon flights in silicon nanowires
We experimentally demonstrated how ballistic heat conduction gradually occurs in short nanowires as the temperature is decreased. In contrast with the previous observation, this work reveals a gradual transition from diffusive to ballistic behavior and shows realistic limits of non-diffusive transport. Our modeling also reveals that quasi-ballistic heat conduction is caused by Lévy walk of phonons.
Anufriev et al. ACS Nano 12, 11928, 2018
Heat guiding and focusing using ballistic phonon transport in phononic nanostructures
Our experiments and simulations demonstrated that it is possible to guide and focus heat using ballistic transport of phonons. This work uncovers a mechanism to achieve functionality similar to that of photonic crystals but for heat and without phonon interference.
Anufriev et al. Nature Communications, 8, 15505, 2017
Academic open-source projects
FreePaths - Monte Carlo simulator of phonon and thermal transport.
Angry Reviewer - Online style corrector for academic writing.