Phononic Thermal Conduction Engineering for Bolometers: From Phononic Crystals to Radial Casimir Limit
| Autor: | Zhuoran Geng, Tuomas Puurtinen, Ilari Maasilta, Yaolan Tian |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
010302 applied physics
Physics Surface (mathematics) Condensed matter physics Phonon Bolometer Detector 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal conduction 01 natural sciences Atomic and Molecular Physics and Optics law.invention Casimir effect Thermal conductivity law Condensed Matter::Superconductivity 0103 physical sciences General Materials Science Limit (mathematics) 0210 nano-technology |
| Zdroj: | Journal of Low Temperature Physics. 184:211-216 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/s10909-015-1372-0 |
| Popis: | We discuss two alternative and complementary means of controlling radial phonon conduction for bolometers in two dimensions: by using phononic crystals or by roughening the surface of the membranes (Casimir limit). For phononic crystals, we present new experiments with a modified geometry and a larger hole periodicity than before, achieving a low thermal conductance $${\sim }2$$ pW/K at 150 mK. Calculations in the Casimir limit, on the other hand, show that for small detector dimensions thermal conductance below 1 fW/K seems achievable. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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