Vapor sensing using a bio-inspired porous silicon photonic crystal
| Autor: | Jonathan Rasson, Sébastien R. Mouchet, Laurent Francis, Olivier Poncelet, Olivier Deparis |
|---|---|
| Přispěvatelé: | UCL - SST/ICTM/ELEN - Pôle en ingénierie électrique, University of Exeter - College of Engineering, Mathematics and Physical Sciences, UNamur - Autre |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Fabrication
Materials science Nanostructure Physics::Optics Optical detection 02 engineering and technology Porous silicon 01 natural sciences Biomimetism 010309 optics Optics Adsorption Papilio butterfly 0103 physical sciences Photonic crystal business.industry Condensation 021001 nanoscience & nanotechnology Distributed Bragg reflector Iridescence Photonics Optoelectronics Vapor sensor Gas sensor 0210 nano-technology business photonic crystal Ethanol vapor |
| Zdroj: | Materials Today : Proceedings, Vol. 4, no.4, p. 5006-5012 (2017) |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2017.04.107 |
| Popis: | Naturally occurring photonic crystals present on the wing scales of Papilio butterflies are known to exhibit vivid iridescent coloration as well as various optical properties, including vapor sensing properties. This work reports the fabrication of a periodic array of concave multilayers in porous silicon mimicking the Papilio blumei nanostructure and its application as an optical vapor sensor. We compared the variations in the reflectance spectrum due to ethanol vapor adsorption and condensation inside the bio-inspired concave porous silicon multilayer structure to the variations of a standard flat porous silicon Bragg mirror. This results in an enhanced response time in the case of the bio-inspired concave structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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