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10 February 1999 Fiber optic SERS sensor for environmental monitoring
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Proceedings Volume 3534, Environmental Monitoring and Remediation Technologies; (1999)
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States
The development of fiberoptic sensors for remote in-situ environmental monitoring using surface-enhanced Raman scattering (SERS) is described. The approach to sensor development includes the initial development of SERS-active media on nanoparticle-based solid-surface substrates. These media are generally metal-coated nanoparticles that can be further modified for enhanced chemical selectivity, longevity and ruggedness. One example of surface modification is the application of a permeability-selective polymer, polyvinyl pyrrolidone (PVP). For remote environmental sensing applications, the planar solid SERS substrates have been successfully incorporated in a two-fiber probe design. We have also applied SERS-active media directly to an optical fiber as an integrated single-fiber design. Such sensors occupy much less volume and promote non intrusive monitoring systems. Linear response of the integrated sensor monitoring systems for various environmental chemicals with excellent correlation (greater than 0.99) has been observed in the part-per-billion (ppb) range.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David L. Stokes, Jean Pierre Alarie, V. Ananthanarayanan, and Tuan Vo-Dinh "Fiber optic SERS sensor for environmental monitoring", Proc. SPIE 3534, Environmental Monitoring and Remediation Technologies, (10 February 1999);

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