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

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Show simple item record Cortie, MB Barnett, M Ford, MJ 2009-06-26T04:16:22Z 2007
dc.identifier.citation Proceedings of SPIE - The International Society for Optical Engineering, 2007, 6647
dc.identifier.isbn 9780819467959
dc.identifier.issn 0277-786X
dc.identifier.other E1 en_US
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 VO 2, 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.
dc.relation.isbasedon 10.1117/12.739251
dc.title Active control of the optical properties of nanoscale coatings using 'smart' nanoparticles
dc.type Conference Proceeding
dc.parent Proceedings of SPIE - The International Society for Optical Engineering
dc.journal.volume 6647
dc.journal.number en_US
dc.publocation San Diego, USA en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage 4 en_US SCI.Physics and Advanced Materials en_US
dc.conference Verified OK en_US
dc.conference.location San Diego USA en_US
dc.for 1007 Nanotechnology
dc.personcode 020302
dc.personcode 020323
dc.percentage 100 en_US Nanotechnology en_US
dc.classification.type FOR-08 en_US
dc.custom SPIE en_US 20070826 en_US
dc.location.activity San Diego, USA en_US
dc.description.keywords Active plasmonic control
dc.description.keywords Gold
dc.description.keywords Nanorods
dc.description.keywords Plasmon resonance
dc.description.keywords Silver
dc.description.keywords Thermochromic
dc.description.keywords Vanadium dioxide
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access 2015-04-15 12:23:47.074767+10
pubs.consider-herdc true
utslib.collection.history General (ID: 2)
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:11:26+10:00]

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