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Center for Fluorinated Functional Materials (CFFM)
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Formation of nanoscale buckles can be observed when silver nanowires were deposited onto prestrained polydimethylsiloxane (PDMS) substrates. The spacing distance between the resulting silver nanoparticles corresponds to the buckling wavelength of the silver nanowires. The buckled nanowires exhibit unique optical properties, such as interruption of scattered photons and emission of photons from subwavelength structure, and surface-enhanced Raman scattering. These silver nanobuckles may have great potentials for nano-opto devices and functional materials for chemical detections.
Please refer our recent article for detail information.
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- Nanocomposite LbL Thin Films with Upconversion Nanocrystals
We develop a facile and highly-controlled approach to fabricating free-standing upconversion multilayer layer-by-layer thin films containing homogeneously distributed lanthanide-doped inorganic nanocrystals. Hyphophilic nanocrystals can be obtained via ligand-exchange process and its effect on upconversion properties is explored. Nanocomposite LbL thin films with NIR-to-visible upconversion properties may be suitbale for a variety of optical devices and sensing applications.
Please refer our recent article for detail information.
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- Surface Enhanced Raman Scattering
We are interested in assembling active substrates for surface-enhanced Raman scattering (SERS) measurements. In particular, silver nanowires will be used to fabricate thin films for detecting chemicals with SERS method.
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Details coming soon
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We thank the supports from NSF, NASA and other funding agencies.
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114 Churchill Hanes, Department Chemistry, The University of South Dakota, Vermillion, SD 57069
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