Publications [#262816] of Tuan Vo-Dinh

Papers Published

1. Stokes, DL; Alarie, JP; Ananthanarayanan, V; Vo-Dinh, T, Fiber optics SERS sensors for environmental monitoring, Proceedings of SPIE the International Society for Optical Engineering, vol. 3534 (January, 1999), pp. 647-654, Boston, MA, USA [12.339047]
   (last updated on 2026/01/19)

   Abstract:
   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 (> 0.99) has been observed in the part-per-billion (ppb) range.

   Keywords:
   Raman scattering;Environmental protection;Monitoring;Remote sensing;Organic polymers;Nanostructured materials;Solids;Fiber optics;Probes;