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(Invited) Synthesis and Photoswitching Tunability of GHz Dielectric Property at e-Polarizable [60]Fullerosomic Surface of Hybrid Core-Shell Nanoparticles

Wednesday, 1 June 2016: 08:00
Aqua 311 A (Hilton San Diego Bayfront)
L. Chiang (University of Massachusetts), M. Wang, T. Yu (University of Massachusetts, Lowell), L. S. Tan, and A. Urbas (Air Force Research Laboratory)
We fabricated highly magnetic γ-FeOx@AuNP core-shell nanoparticles with deposition of fullerosome array of C60(>DPAF-C9) at the outer shell. It formed a configuration of three-layered core-shell (γ-FeOx@AuNP)@[C60(>DPAF-C9)]n 1. These surface-stabilized soluble NPs were found to be capable of photoinducing surface plasmonic resonance (SPR) effect in the inner Au layer by white LED light and subsequently transfer the accumulated PR energy at the interface to the outer, partially bilayered 1-derived fullerosome membrane layer in a near-field (~1.5 nm). The phenomena led to large amplification of dielectric properties associated with the photoswitching effect and the new unusual phenomenon of delayed photoinduced capacitor-like (i.e. electric polarization) behavior at the frequency range of 0.5‒4.0 GHz. The effect may be suitable for designing photoresponsive dielectric-switchable nanomaterial toward applications of GHz frequency devices.