Resonant photonic structures in porous silicon for biosensing
| Autor: | Tengfei Cao, Yiliang Zhao, Sharon M. Weiss, Gilberto A. Rodriguez, Yasmin M. Graham, Girija Gaur |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Silicon Hybrid silicon laser business.industry Physics::Optics chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Porous silicon 01 natural sciences Waveguide (optics) 010309 optics Resonator Optics chemistry Surface wave 0103 physical sciences Optoelectronics Photonics 0210 nano-technology business Porous medium |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.2256893 |
| Popis: | The formation of resonant photonic structures in porous silicon leverages the benefit of high surface area for improved molecular capture that is characteristic of porous materials with the advantage of high detection sensitivity that is a feature of resonant optical devices. This review provides an overview of the biosensing capabilities of a variety of resonant porous silicon photonic structures including microcavities, Bloch surface waves, ring resonators, and annular Bragg resonators. Detection sensitivities > 1000 nm/RIU are achieved for small molecule detection. The challenge of detecting molecules that approach and exceed the pore diameter is also addressed. |
| Databáze: | OpenAIRE |
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