Abstract
Recent research in our lab has identified a new class of metal nanoparticles that are highly efficient for surface-enhanced optical spectroscopy. By coupling nanoparticles with surface-enhanced Raman scattering (SERS), surface optical processes can be enhanced by 14 to 15 orders of magnitude. This enormous enhancement allows the optical detection of single molecules at room temperature. However, in a standard silver colloid only 1 out of 100 nanoparticles is SERS-active. In this report, a new methodology based on size-selective filtration is demonstrated. This size-selective fractionation procedure yields an enriched colloid that can be used to prepare highly efficient nanoparticle thin films.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 112-119 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3913 |
| State | Published - 2000 |
| Externally published | Yes |
| Event | In-Vitro Diagnostic Instrumentation - San Jose, CA, USA Duration: Jan 26 2000 → Jan 27 2000 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering