Active control of the optical properties of nanoscale coatings using 'smart' nanoparticles

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dc.contributor.author Cortie, Michael en_US
dc.contributor.author Barnett, Michael en_US
dc.contributor.author Ford, Michael en_US
dc.contributor.editor G.B. Smith and M.B. Cortie en_US
dc.date.accessioned 2009-06-26T04:16:22Z
dc.date.available 2009-06-26T04:16:22Z
dc.date.issued 2007 en_US
dc.identifier 2007001180 en_US
dc.identifier.citation Cortie Michael, Barnett Michael, and Ford Michael 2007, 'Active control of the optical properties of nanoscale coatings using 'smart' nanoparticles', SPIE, San Diego, USA, pp. 1-4. en_US
dc.identifier.issn 9780819467959 en_US
dc.identifier.other E1 en_US
dc.identifier.uri http://hdl.handle.net/10453/792
dc.description.abstract Coatings that can self-modulate their optical properties as a function of an external stimulus are of significant technological interest. In this regard, the possibilities for thermo- or electrochromic materials such as VO2 and WO3 are already comparatively well-known. Here, however, we explore a new kind of 'smart' coating, based on the active control of a plasmon resonance in nanoparticles. One possible system is based on the modulation of the plasmon resonance of a precious metal nanorod or nanosphere by an active dielectric shell. The active dielectric undergoes an insulator-to-metal transition on increase of temperature which modulates the plasmon resonance of the underlying precious metal nanoparticle, thereby changing the wavelength at which its optical extinction is maximum. In the case of nanorods, the absorption maximum of the longitudinal plasmon is particularly sensitive to the aspect ratio of the nanoparticle and the dielectric properties of the environment, and may be readily tuned across the visible and near-infrared portions of the spectrum. In addition, nanoparticles of certain thermochromic dielectrics, such as VO2, are expected to have a plasmon resonance of their own which can be switched on or off by control of the temperature. We consider some of the possibilities, using both the discrete dipole approximation and the exact analytical solution due to Mie to calculate the optical properties. en_US
dc.publisher SPIE en_US
dc.relation.isbasedon http://dx.doi.org/10.1117/12.739251 en_US
dc.rights © (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
dc.title Active control of the optical properties of nanoscale coatings using 'smart' nanoparticles en_US
dc.parent Nanocoatings. Proceedings of SPIE vol 6647 en_US
dc.journal.volume en_US
dc.journal.volume 6647 en_US
dc.journal.number en_US
dc.publocation San Diego, USA en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage 4 en_US
dc.cauo.name SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.conference.location San Diego USA en_US
dc.for 100700 en_US
dc.personcode 020302 en_US
dc.personcode 10166078 en_US
dc.personcode 020323 en_US
dc.percentage 100 en_US
dc.classification.name Nanotechnology en_US
dc.classification.type FOR-08 en_US
dc.custom SPIE en_US
dc.date.activity 20070826 en_US
dc.location.activity San Diego, USA en_US
dc.description.keywords NA en_US
dc.staffid 020323 en_US


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