Next Article in Journal
Evaluation of the Stability of Dielectric Nanofluids for Use in Transformers under Real Operating Conditions
Next Article in Special Issue
Filtering Characteristics of Phonon Polaritons Waves Based on Dielectric-h-BN-Dielectric Structure in Mid-Infrared Band
Previous Article in Journal
2D Au Nanosphere Arrays/PVA-PBA-Modified-Hydrogel Composite Film for Glucose Detection with Strong Diffraction Intensity and Linear Response
Open AccessArticle

Coherent Thermal Conduction in Silicon Nanowires with Periodic Wings

Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan
PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(2), 142;
Received: 1 January 2019 / Revised: 17 January 2019 / Accepted: 17 January 2019 / Published: 22 January 2019
(This article belongs to the Special Issue Advances in Nanophononics)
Artificial periodic nanostructures, known as phononic crystals, promise to control the thermal properties of nanostructures in the coherent regime, which can be achieved in semiconductors at low temperatures. Here, we study coherent thermal conduction in silicon nanowires with added periodic wings at sub-Kelvin temperature. Our simulations show that the added periodic wings flatten the phonon dispersion and thus reduce the thermal conductance. We investigate the dependence of this reduction on the size of the wings and conclude that the reduction is mainly caused by the periodicity of the wings, rather than by local resonances in them. These findings help to better understand the mechanisms controlling coherent heat conduction in periodic resonant nanostructures. View Full-Text
Keywords: phononic crystals; nanowires; thermal conductivity; silicon phononic crystals; nanowires; thermal conductivity; silicon
Show Figures

Graphical abstract

MDPI and ACS Style

Anufriev, R.; Nomura, M. Coherent Thermal Conduction in Silicon Nanowires with Periodic Wings. Nanomaterials 2019, 9, 142.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop