Modification of Thermal Conductivity and Phonon Dispersion Relation by Means of Phononic Crystals

被引：0

作者：

Sledzinska, M. ^{[1
,2
]}

El Sachat, A. ^{[1
,2
,3
]}

Reparaz, J. S. ^{[1
,2
]}

Wagner, M. R. ^{[1
,2
]}

Alzina, F. ^{[1
,2
]}

Sotomayor Torres, C. M. ^{[1
,2
,4
]}

机构：

[1] CSIC, Catalan Inst Nanosci & Nanotechnol ICN2, Campus UAB, Barcelona 08193, Spain

[2] Barcelona Inst Sci & Technol, Campus UAB, Barcelona 08193, Spain

[3] Univ Autonoma Barcelona, Dept Phys, Campus UAB, E-08193 Barcelona, Spain

[4] ICREA, Barcelona 08010, Spain

来源：

2017 23RD INTERNATIONAL WORKSHOP ON THERMAL INVESTIGATIONS OF ICS AND SYSTEMS (THERMINIC) | 2017年

关键词：

SILICON;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat conduction in silicon can be effectively reduced by means of periodic patterning of free-standing membranes. In this work we show a straightforward method for fabrication of free-standing phononic crystals based on thin silicon membranes. We use the contactless two-laser Raman thermometry method to measure thermal conductivity of the hexagonal phononic crystals. The aim of the study is to understand and control the behaviour of phonons in phononic crystals, with the target of minimizing the thermal conductivity. In particular, we are interested in the influence of the surface-to-volume ratio on the thermal conductivity.

引用

页数：4

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