Recent developments and applications of hybrid surface plasmon resonance interfaces in optical sensing |
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Authors: | Shuyan Gao Naoto Koshizaki |
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Institution: | (1) College of Chemistry and Environmental Science, Henan Normal University, 46 Jianshe Street, Xinxiang, 453007 Henan, China;(2) Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan |
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Abstract: | Nanostructured noble metals exhibit an intense optical near field due to surface plasmon resonance, therefore promising widespread
applications and being of interest to a broad spectrum of scientists, ranging from physicists, chemists, and materials scientists
to biologists. A wealth of research is available discussing the synthesis, characterization, and application of noble metal
nanoparticles in optical sensing. However, with respect to the sensitivity of the frequency and width of these surface plasmon
resonance modes to the particle’s shape, size, and environment, in nearly every case, success strongly depends on the availability
of highly stable, adhesive, and sensitive nanoparticles. This undoubtedly presents a challenging task to nanofabrication.
The past decade has witnessed fascinating advances in this field, in particular, the construction of oxide-based hybrid plasmonic
interfaces to overcome the problem addressed above by (1) coating the metallic nanostructures with thin overlayers to form
sandwiched structures or (2) embedding metallic nanostructures in a dielectric matrix to obtain metal/dielectric matrix nanocomposite
films. In this critical review, we focus on recent work related to this field, beginning with a presentation of hybrid films
with enhanced structural and optical stability, readily and selectively designed using chemical and physical techniques. We
then illustrate their interesting optical properties and demonstrate exciting evidence for the postulated application in surface
plasmon sensing fields. Finally, we survey the work remaining to be done for that potential to be realized. |
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