Calculation of Thermal Resistance of Tapered Silicon Nanowires with Phonon-Boundary Scattering
- Authors
- Cho, Sang-Hyeok; Park, No-Won; Lee, Sang-Kwon; Yoon, Young-Gui
- Issue Date
- Jun-2016
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Silicon Nanowires; Phonon-Boundary Scattering; Thermal Resistance; Modified Callaway Model
- Citation
- SCIENCE OF ADVANCED MATERIALS, v.8, no.6, pp 1216 - 1220
- Pages
- 5
- Journal Title
- SCIENCE OF ADVANCED MATERIALS
- Volume
- 8
- Number
- 6
- Start Page
- 1216
- End Page
- 1220
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/6897
- DOI
- 10.1166/sam.2016.2744
- ISSN
- 1947-2935
1947-2943
- Abstract
- We present calculated the thermal resistances of tapered core-shell silicon nanowires ( SiNWs) of a few tens of nanometer in radii and 5.0 mu m in length with phonon-boundary scattering. We apply a modified Callaway model for the theoretical calculation of frequency-dependent phonon mean free path. The phonon-boundary scattering is accounted for by reducing the phonon mean free path using Matthiessen's rule, whereas the core-shell structure is treated in a simple analytical model. It is clearly observed that the calculated contribution of the phonon-boundary scattering to the thermal resistance is of the same order of magnitude as the bulk phonon contribution at near-ambient temperature, and it becomes large at low temperatures.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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