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Title: Surface-enhanced Raman spectroscopy on litographically constructed microelectrodes

Abstract

A novel silicon substrate microelectrode array has been demonstrated to function as a surface-enhanced Raman Spectroscopy (SERS) microelectrode. SERS from adenosine and pyridine down to 10 mM concentration on silver coated iridium and gold microelectrode arrays have been observed with excitation at 532 nm and 633 nm correspondingly. Ag/AgCl reference electrode and platinum or integrated on the microelectrode iridium counter electrodes were used. Owing to the small area of the activated sites on the microelectrode (10 mm x 15 mm) the SERS signal exhibited a strong laser power dependence. The optimal laser power on the activated site was shown to be in the order of x 100 mW. Good quality SERS spectra were recorded with exposure times of 10s and less. The small size of the electrodes makes them promising for studies in confined spaces. This includes potential applications as capillary electrophoreses detectors and probes of chemistry of biological organisms. A work on detection of lipids adhered to self-organized monolayers (SAM)s of alkanethiols on the activated microelectrodes is in progress.

Authors:
; ;  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States) [and others
Publication Date:
OSTI Identifier:
466470
Report Number(s):
CONF-951017-
TRN: 96:005999-0002
Resource Type:
Conference
Resource Relation:
Conference: 22. annual conference of the Federation of Analytical Chemistry and Spectroscopy Societies, Cincinnati, OH (United States), 15-20 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of FACSS XXII - the 22nd annual conference of the Federation of Analytical Chemistry and Spectroscopy Societies; PB: 285 p.
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 55 BIOLOGY AND MEDICINE, BASIC STUDIES; 36 MATERIALS SCIENCE; ADENOSINE; RAMAN SPECTROSCOPY; GOLD; PHYSICAL PROPERTIES; IRIDIUM; PYRIDINE; SILVER; ELECTRODES; LIPIDS; PLATINUM; PROBES; SILICON

Citation Formats

Zhelyaskov, V.R., Milne, E.T., and Weldon, M.K. Surface-enhanced Raman spectroscopy on litographically constructed microelectrodes. United States: N. p., 1995. Web.
Zhelyaskov, V.R., Milne, E.T., & Weldon, M.K. Surface-enhanced Raman spectroscopy on litographically constructed microelectrodes. United States.
Zhelyaskov, V.R., Milne, E.T., and Weldon, M.K. Sun . "Surface-enhanced Raman spectroscopy on litographically constructed microelectrodes". United States.
@article{osti_466470,
title = {Surface-enhanced Raman spectroscopy on litographically constructed microelectrodes},
author = {Zhelyaskov, V.R. and Milne, E.T. and Weldon, M.K.},
abstractNote = {A novel silicon substrate microelectrode array has been demonstrated to function as a surface-enhanced Raman Spectroscopy (SERS) microelectrode. SERS from adenosine and pyridine down to 10 mM concentration on silver coated iridium and gold microelectrode arrays have been observed with excitation at 532 nm and 633 nm correspondingly. Ag/AgCl reference electrode and platinum or integrated on the microelectrode iridium counter electrodes were used. Owing to the small area of the activated sites on the microelectrode (10 mm x 15 mm) the SERS signal exhibited a strong laser power dependence. The optimal laser power on the activated site was shown to be in the order of x 100 mW. Good quality SERS spectra were recorded with exposure times of 10s and less. The small size of the electrodes makes them promising for studies in confined spaces. This includes potential applications as capillary electrophoreses detectors and probes of chemistry of biological organisms. A work on detection of lipids adhered to self-organized monolayers (SAM)s of alkanethiols on the activated microelectrodes is in progress.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
Other availability
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