Anisotropy of thermal conductivity in In2Se3 nanostructures
| Autor: | Sheng Wei Lee, Jian-Hao Huang, Cheng Lun Hsin, Piotr Spiewak, Łukasz Ciupiński |
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| Rok vydání: | 2019 |
| Předmět: |
Nanostructure
Materials science Phonon Nanowire General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Thermoelectric materials 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Thermal conductivity Microscopy Composite material 0210 nano-technology Anisotropy Nanoscopic scale |
| Zdroj: | Applied Surface Science. 494:867-870 |
| ISSN: | 0169-4332 |
| Popis: | In this report, α-In2Se3 single-crystal nanobelts and nanowires were grown in the thermal chemical vapor deposition furnace. The growth direction of the nanobelts was identified by standard microscopy techniques and was along the in-plane direction, while that of the nanowire was along the c-axis. The temperature-dependent thermal conductivity of the nanostructures was measured by a suspended-pattern technique, and it was found to fall into two ranges of values between 300 and 400 K owing to the difference in growth orientation. The experimental evidence presented herein is the anisotropy of phonon transport of the layered α-In2Se3, and the effect of bonding strength on the thermal conductivity at the nanoscale. This study would be helpful to the physical understanding and future design of In2Se3–based thermoelectric materials. |
| Databáze: | OpenAIRE |
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