Conference proceeding
Characterization of surface enhanced Raman scattering (SERS) substrates fabricated from colloidal printing inks
REPORTERS, MARKERS, DYES, NANOPARTICLES, AND MOLECULAR PROBES FOR BIOMEDICAL APPLICATIONS II, v 7576(1), pp 75761T-75761T-6
01 Jan 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Surface enhanced Raman scattering (SERS) is now a well-established technique to greatly amplify the normally weak Raman scattering signals. The amplification is achieved by using SERS substrates - specially structured metallic substrates with nano-scale morphological features. One of the most widely used methods for SERS amplification employs nanoparticles of silver or gold either in colloidal suspension or in dry-drop form. In such substrates SERS amplification factors (AF) exceeding 10(12) have been reported. The reproducibility of the colloid-based substrates, however, is a problem. The lack of reproducibility can be caused by a variety of factors that can change the interparticle distances. In this paper we show that thermal annealing of SERS substrates fabricated using commercially available nano-particle inks can be used to create thermally stable substrates with high reproducibility. It appears that thermal annealing destroys the unstable hot-spots with very high AF's but still leaves the sample with high AF sites yielding spatially averaged substrate AF's exceeding 10(8).
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Details
- Title
- Characterization of surface enhanced Raman scattering (SERS) substrates fabricated from colloidal printing inks
- Creators
- Manuel Figueroa - Drexel UniversityWilliam Stephenson - Drexel UniversityKambiz Pourrezaei - Drexel UniversitySomdev Tyagi - Drexel University
- Contributors
- S Achilefu (Editor)R Raghavachari (Editor)
- Publication Details
- REPORTERS, MARKERS, DYES, NANOPARTICLES, AND MOLECULAR PROBES FOR BIOMEDICAL APPLICATIONS II, v 7576(1), pp 75761T-75761T-6
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 6
- Grant note
- One of us (MF) Nano-Technology Initiative (NTI) of Southeastern Pennsylvania GK-12 / NSF Graduate Teaching Fellows in K-12 Education program
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Physics; School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000285580600041
- Scopus ID
- 2-s2.0-77951837000
- Other Identifier
- 991019168982904721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Biomedical
- Nanoscience & Nanotechnology
- Optics