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Title: Porous silicon ring resonator for compact, high sensitivity biosensing applications

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.
Authors:
 [1] ;  [1] ;  [1]
  1. Vanderbilt Univ., Nashville, TN (United States)
Publication Date:
OSTI Identifier:
1193482
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 23; Journal Issue: 6; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Research Org:
Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation; Army Research Office
Contributing Orgs:
Center for Nanophase Materials Sciences; Vanderbilt Institute of Nanoscale Science and Engineering
Country of Publication:
United States
Language:
English
Subject:
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