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Switchable polarization-sensitive surface plasmon resonance of highly stable gold nanorods-liquid crystals composites
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2011 (English)In: Optoelectronic Materials and Devices VI, 2011Conference paper (Refereed)
Abstract [en]

In this work, we demonstrate the bulk self-alignment of gold nanorods (GNRs) dispersed in lyotropic nematic liquid crystals (LCs) with high optical absorption coefficient at the surface plasmon resonant wavelength. The polymer-coated GNRs which show spontaneous long-range orientational ordering along the director of LC host exhibit long-term stability as well as high concentration. External magnetic field and shearing allow for alignment and realignment of the orientation of gold nanorods by changing the director of the liquid crystal matrix. This results in a switchable polarization-sensitive surface plasmon resonance exhibiting stark differences from that of the same nanorods in isotropic fluids. The devise-scale bulk nanoparticle alignment may enable optical metamaterial mass production and control of surface plasmon resonance of nanoparticles.

Place, publisher, year, edition, pages
, Proceedings of SPIE, ISSN 0277-786X ; Vol. 8308
Keyword [en]
Gold nanorods, liquid crystals, optical metamaterials, self-assembly, External magnetic field, Gold nanorod, High concentration, Isotropic fluids, Liquid crystal matrix, Long term stability, Lyotropics, Mass production, Optical absorption coefficients, Orientational orderings, Resonant wavelengths, Self alignment, Surface plasmons, Switchable, Alignment, Exhibitions, Nanoparticles, Nematic liquid crystals, Optical materials, Photonics, Plasmons, Polarization, Self assembly, Surface plasmon resonance, Nanorods
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-149785DOI: 10.1117/12.905435ISI: 000298880400020ScopusID: 2-s2.0-84862916383ISBN: 9780819489616OAI: diva2:742280
2011 Asia Communications and Photonics Conference and Exhibition, ACP 2011 - Optoelectronic Materials and Devices VI; Shanghai, China, 13-16 November, 2011

QC 20140901

Available from: 2014-09-01 Created: 2014-08-27 Last updated: 2014-10-03Bibliographically approved

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He, Sailing
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Electromagnetic Engineering
Electrical Engineering, Electronic Engineering, Information Engineering

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ReferencesLink to record
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