title: Fabrication and robotization of ultrasensitive plasmonic nanosensors for molecule detection with Raman scattering.
abstract: In this work, we introduce the history and mechanisms of surface enhanced Raman scattering (SERS), discuss various techniques for fabrication of state-of-the-art SERS substrates, and review recent work on robotizing plasmonic nanoparticles, especially, the efforts we made on fabrication, characterization, and robotization of Raman nanosensors by design. Our nanosensors, consisting of tri-layer nanocapsule structures, are ultrasensitive, well reproducible, and can be robotized by either electric or magnetic tweezers. Three applications using such SERS nanosensors were demonstrated, including location predictable detection, single-cell bioanalysis, and tunable molecule release and monitoring. The integration of SERS and nanoelectromechanical system (NEMS) devices is innovative in both device concept and fabrication, and could potentially inspire a new device scheme for various bio-relevant applications.
authors.affiliation: Materials Science and Engineering Program, the University of Texas at Austin, Austin, TX 78712, USA. xxu.uta@gmail.com.
authors.forename: Xiaobin
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Mechanical Engineering, the University of Texas at Austin, Austin, TX 78712, USA. kkim@austin.utexas.edu.
authors.forename: Kwanoh
authors.initials: K
authors.lastname: Kim
authors.affiliation: Materials Science and Engineering Program, the University of Texas at Austin, Austin, TX 78712, USA. chaoliu2011@utexas.edu.
authors.forename: Chao
authors.initials: C
authors.lastname: Liu
authors.affiliation: Materials Science and Engineering Program, the University of Texas at Austin, Austin, TX 78712, USA. dfan@austin.utexas.edu.|Department of Mechanical Engineering, the University of Texas at Austin, Austin, TX 78712, USA. dfan@austin.utexas.edu.
authors.forename: Donglei
authors.initials: D
authors.lastname: Fan
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D036103:Nanotechnology / Q000379:methods*; D013059:Spectrum Analysis, Raman / Q000379:methods*