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Title: Surface-enhanced Raman fiberoptic sensors for remote monitoring

A new sensor design for remote surface-enhanced Raman scattering (SERS) measurements has been developed for environmental applications. The design features the modification of an optical fiber using layers of alumina microparticles and silver coatings for inducing the SERS effect at the sensing probe. A single fiber carries both the laser excitation and the SERS signal radiation, keeping optical parameters at the remote tip simple and consistent. The small tip size achievable with this configuration also demonstrates potential of this new design as a microsensor for in-situ measurement in microenvironments. Details of sensor tip fabrication and optical system design are described. SERS spectra of aqueous environmental samples acquired in-situ using the SERS sensor are also presented to illustrate the effectiveness of the SERS sensor.
Authors:
; ;  [1]
  1. Oak Ridge National Lab., TN (United States). Health Sciences Research Div.
Publication Date:
OSTI Identifier:
102165
Report Number(s):
CONF-9506235--3
ON: DE95017428; TRN: AHC29524%%45
DOE Contract Number:
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Conference: International conference on environmental monitors and hazardous waste site remediation, Munich (Germany), 19-23 Jun 1995; Other Information: PBD: [1995]
Research Org:
Oak Ridge National Lab., TN (United States)
Sponsoring Org:
USDOE, Washington, DC (United States);Department of Defense, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ENVIRONMENTAL MATERIALS; REMOTE SENSING; RAMAN SPECTROSCOPY; SPECTROMETERS; DESIGN; ENVIRONMENTAL IMPACTS; FIBER OPTICS; WATER POLLUTION; AQUEOUS SOLUTIONS; EXPERIMENTAL DATA