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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Kohiyama, Asaka Shimizu, Makoto Iguchi, Fumitada Yugami, Hiroo |
| Copyright Year | 2016 |
| Abstract | Here, closed-end microcavity is proposed in which a semi-transparent metal film was formed atop microcavity. The structure shows weak angular dependence as well as quasi-monochromatic absorptance. Au is employed as material of the cavity walls and the covering thin film. Quasi-monochromatic absorption from the structure is observed in numerical simulation. High quality factor (Q factor) is obtained by strong confinement in the closed-end microcavity. Asymmetric and quasi-monochromatic absorption band with a Q factor of ∼28 at 1.85 μm was observed. This value was about 4-fold larger than that of the open-end microcavity. Additionally, the closed-end microcavity structure filled with SiO2 in cavity exhibits isotropic and quasi-monochromatic thermal radiation over a wide solid angle. This result suggests that both quasi-monochromatic and low-directivity absorptance can be realized by using this configuration. |
| Sponsorship | Heat Transfer Division |
| File Format | |
| ISBN | 9780791849651 |
| DOI | 10.1115/MNHMT2016-6683 |
| Volume Number | Volume 1: Micro/Nanofluidics and Lab-on-a-Chip; Nanofluids; Micro/Nanoscale Interfacial Transport Phenomena; Micro/Nanoscale Boiling and Condensation Heat Transfer; Micro/Nanoscale Thermal Radiation; Micro/Nanoscale Energy Devices and Systems |
| Conference Proceedings | ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer |
| Language | English |
| Publisher Date | 2016-01-04 |
| Publisher Place | Biopolis, Singapore |
| Access Restriction | Subscribed |
| Subject Keyword | Q-factor Thin films Cavities Transparency Thermal radiation Absorption Computer simulation Metallic films Absorption spectra Cavity walls |
| Content Type | Text |
| Resource Type | Article |
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