title: Surface-enhanced Raman scattering with Ag nanoparticles optically trapped by a photonic crystal cavity.
abstract: 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.
authors: School of Engineering and Applied Sciences, Harvard University, 33 Oxford Street, Cambridge, Massachusetts 02138, USA.
authors: Shiyun
authors: S
authors: Lin
authors: Wenqi
authors: W
authors: Zhu
authors: Yuhang
authors: Y
authors: Jin
authors: Kenneth B
authors: KB
authors: Crozier