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Accession Number ADA564110
Title Molecular Machine-Based Active Plasmonics.
Publication Date Jul 2011
Media Count 12p
Personal Author J. F. Stoddart T. J. Huang
Abstract In the past year, we have made the following significant progress: (1) We demonstrated dual-stimulus switching of a catenane in water. (2) We synthesized mechanically stabilized tetrathiafulvalene radical dimmers. (3) We have developed an efficient technique to fabricate optically thin metallic films with subwavelength patterns and their complements simultaneously. (4) We demonstrate a scalable, rapid, and inexpensive fabrication method based on the salting-out quenching technique and colloidal lithography for the fabrication of two types of nanostructures with large electric field: nanodisk dimers and cusp nanostructures. (5) We performed Surface Enhanced Raman Spectroscopy (SERS) studies on platinum and gold nanodisk arrays at both plasmon resonant and off- plasmon resonant excitation wavelengths. In addition, we have demonstrated that both surface and resonance Raman enhancement can be exploited to elucidate chemical information in real time about the oxidation state of molecules at an electrode interface. (6) We demonstrated a frequency-addressed plasmonic switch by embedding a uniform gold nanodisk array into dual-frequency liquid crystals (DFLC). (7) We carry out a real-time study of all-optical modulation of localized surface plasmon resonance (LSPR) coupling in a hybrid system that integrates a photo-switchable optical grating with a Au nanodisk array. (8) We demonstrate dynamic tuning of plasmon-exciton resonant coupling in arrays of nanodisk J-aggregate complexes. (9) We have demonstrated a surface acoustic wave (SAW)-driven light shutter using polymer-dispersed liquid crystals (PDLCs).
Keywords Artificial molecular muscles
Carbon nanotubes
Colloidal lithography
Liquid crystals
Lspr(Localized surface plasmon resonance)
Molecular electronics
Molecular motors
Molecular switches
Pdlc(Polymer dispersed liquid crystal)
Polymeric (C2 daisy chains)
Scalable manufacturing
Sers(Surface enhanced raman spectroscopy)
Surface acoustic waves

Source Agency Non Paid ADAS
NTIS Subject Category 49 - Electrotechnology
99F - Physical & Theoretical Chemistry
46G - Plasma Physics
Corporate Author Pennsylvania State Univ., University Park.
Document Type Technical report
Title Note Final rept. 1 Jan 2008-30 Apr 2011.
NTIS Issue Number 1302
Contract Number FA9550-08-1-0349

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