Title :
3-D nanoporous optofluidic device for high sensitivity SERS detection
Author :
Yazdi, Soroush H. ; White, Ian M.
Author_Institution :
Fischell Dept. of Bioeng., Univ. of Maryland, College Park, MD, USA
Abstract :
We report the demonstration of an optofluidic surface enhanced Raman spectroscopy (SERS) device that leverages nanoporous microfluidics to dramatically increase the SERS performance. In this work, we utilize packed silica microspheres in a microfluidic channel to create a 3D nanoporous concentration matrix to achieve a detection limit of 400 attomoles of Rhodamine 6G in 2 minutes in a simple to fabricate microfluidic chip. Integrated fiber optics further enables the device to be relevant for portable applications.
Keywords :
chemical sensors; dyes; fibre optic sensors; integrated optics; matrix algebra; micro-optomechanical devices; microchannel flow; microfabrication; microsensors; nanophotonics; nanoporous materials; nanosensors; silicon compounds; surface enhanced Raman scattering; 3D nanoporous concentration matrix; 3D nanoporous optofluidic device; SiO2; integrated fiber optics; microfluidic chip fabrication; microfluidics channel; nanoporous microfluidics; packed silica microsphere; sensitivity SERS detection; surface enhanced Raman spectroscopy; Chemicals; Microfluidics; Nanoparticles; Optical fiber cables; Optical fibers; Raman scattering; Silver; Biosensors; Microfluidics; Optical sesnors; Raman scattering;
Conference_Titel :
Microsystems for Measurement and Instrumentation (MAMNA), 2012
Conference_Location :
Annapolis, MD
Print_ISBN :
978-1-4673-1781-8
DOI :
10.1109/MAMNA.2012.6195107
