Journal
NANO LETTERS
Volume 13, Issue 2, Pages 559-563Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl304069n
Keywords
Optical trapping; SERS; silicon photonics; resonator
Categories
Funding
- National Science Foundation (NSF) [ECCS-0747560]
- Defense Advanced Research Projects Agency (DARPA) N/MEMS S&T Fundamentals program [N66001-10-1-4008]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0747560] Funding Source: National Science Foundation
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We demonstrate a reusable and reconfigurable surface enhanced Raman scattering (SERS) platform by optically trapping Ag nanoparticles with a photonic crystal cavity integrated with a microfluidic chip. High-performance SERS is performed in a very reproducible manner, owing to the fact that Ag aggregates are produced by optical trapping in a controllable process that is monitored in real-time by the cavity resonance shift that occurs with the trapping of each additional nanoparticle.
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