| Summary: | 碩士 === 國立臺灣海洋大學 === 光電科學研究所 === 94 === Abstract
The goal of this thesis is to fabricate different sizes of metallic nanoparticles on the glass substrate, Au film and Ag film by using thermal evaporation. These metallic nanoparticles can enhance the local electric field in many applications. For example: the sensitivity in surface plasmon resonance (SPR) biosensor can be enhanced by adding metallic nanoparticles onto the surface of metal film. The Raman signal in Surface Enhanced Raman Scattering (SERS) can be greatly enhanced due to SPR in metallic nanoparticles. In this thesis, we focus our study on Surface Enhanced Raman Scattering in metallic nanoparticles arrays.
The growth mechanism of nanoparticles by using thermal evaporation is a stochastic process and the nanoparticles grown under such condition won’t have uniform size. To improve this nonuniformity, we employ NanoSphere Lithography (NSL) to fabricate metallic nanoparticles arrays which the size of each nanoparticle is almost the same. We also study SERS of the metallic substrates with lift-off and not lift-off processes in the last step of NSL. We believe that if one can successfully fabricate metallic nanoparticles arrays, then it will bring great benefits to the study of enhancement effect in the fields of surface plasmon resonance biosensor, SERS spectroscopy, near-field optics, organic light-emitting diodes and so on.
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