Femtosecond Laser-Nanostructured Substrates for Surface-Enhanced Raman Scattering

We present a new type of surface-enhanced Raman scattering (SERS) substrate that exhibits extremely large and uniform cross-section enhancements over a macroscopic (greater than 25 mm2) area. The substrates are fabricated using a femtosecond laser nanostructuring process, followed by thermal deposit...

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Veröffentlicht in:	Langmuir 2009-02, Vol.25 (3), p.1790-1794
Hauptverfasser:	Diebold, Eric D, Mack, Nathan H, Doorn, Stephen K, Mazur, Eric
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Materials: Nano-and Mesostructured Materials, Polymers, Gels, Liquid Crystals, Composites Surface physical chemistry
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We present a new type of surface-enhanced Raman scattering (SERS) substrate that exhibits extremely large and uniform cross-section enhancements over a macroscopic (greater than 25 mm2) area. The substrates are fabricated using a femtosecond laser nanostructuring process, followed by thermal deposition of silver. SERS signals from adsorbed molecules show a spatially uniform enhancement factor of approximately 107. Spectroscopic characterization of these substrates suggests their potential for use in few or single-molecule Raman spectroscopy.
ISSN:	0743-7463 1520-5827
DOI:	10.1021/la803357q