Porous silicon ring resonator for compact, high sensitivity biosensing applications
- Vanderbilt Univ., Nashville, TN (United States)
A ring resonator is patterned on a porous silicon slab waveguide to produce a compact, high quality factor biosensor with a large internal surface area available for enhanced recognition of biological and chemical molecules. The porous nature of the ring resonator allows molecules to directly interact with the guided mode. Quality factors near 10,000 were measured for porous silicon ring resonators with a radius of 25 μm. A bulk detection sensitivity of 380 nm/RIU was measured upon exposure to salt water solutions. Specific detection of nucleic acid molecules was demonstrated with a surface detection sensitivity of 4 pm/nM.
- Research Organization:
- Vanderbilt Univ., Nashville, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); US Army Research Office (ARO)
- Contributing Organization:
- Center for Nanophase Materials Sciences; Vanderbilt Institute of Nanoscale Science and Engineering
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1193482
- Journal Information:
- Optics Express, Vol. 23, Issue 6; ISSN 1094-4087
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 75 works
Citation information provided by
Web of Science
Web of Science
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