4.6 Article

High-Q silk fibroin whispering gallery microresonator

Journal

OPTICS EXPRESS
Volume 24, Issue 18, Pages 20825-20830

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.24.020825

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Funding

  1. National Science Foundation (NSF) [1264997]
  2. Office of Naval Research (ONR) [N00014-13-1-0596]
  3. Directorate For Engineering
  4. Div Of Chem, Bioeng, Env, & Transp Sys [1264997] Funding Source: National Science Foundation

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We have experimentally demonstrated an on-chip all-silk fibroin whispering gallery mode microresonator by using a simple molding and solution-casting technique. The quality factors of the fabricated silk protein microresonators are on the order of 10(5). A high-sensitivity thermal sensor was realized in this silk fibroin microtoroid with a sensitivity of -1.17 nm/K, that is 8 times higher than previous WGM resonator-based thermal sensors. This opens the way to fabricate biodegradable and biocompatible protein based microresonators on a flexible chip for biophotonics applications. (C) 2016 Optical Society of America

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