By a News Reporter-Staff News Editor at Science Letter -- New research on Nanoparticles is the subject of a report. According to news originating from Cambridge, United Kingdom, by NewsRx correspondents, research stated, "The remarkable optical properties of metal nanoparticles are governed by the excitation of localized surface plasmon resonances (LSPRs). The sensitivity of each LSPR mode, whose spatial distribution and resonant energy depend on the nanoparticle structure, composition and environment, has given rise to many potential photonic, optoelectronic, catalytic, photovoltaic, and gas-and bio-sensing applications(1-3)."
Our news journalists obtained a quote from the research from the University of Cambridge, "However, the precise interplay between the three-dimensional (3D) nanoparticle structure and the LSPRs is not always fully understood and a spectrally sensitive 3D imaging technique is needed to visualize the excitation on the nanometre scale. Here we show that 3D images related to LSPRs of an individual silver nanocube can be reconstructed through the application of electron energy-loss spectrum imaging(4), mapping the excitation across a range of orientations, with a novel combination of non-negative matrix factorization(5,6), compressed sensing(7,8) and electron tomography(9). Our results extend the idea of substrate-mediated hybridization of dipolar and quadrupolar modes predicted by theory, simulations, and electron and optical spectroscopy(10-12), and provide experimental evidence of higher-energy mode hybridization."
According to the news editors, the research concluded: "This work represents an advance both in the understanding of the optical response of noble-metal nanoparticles and in the probing, analysis and visualization of LSPRs."
For more information on this research see: Three-dimensional imaging of localized surface plasmon resonances of metal nanoparticles. Nature, 2013;502(7469):80-84,134-140. Nature can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Nature - www.nature.com/nature/)
The news correspondents report that additional information may be obtained from O. Nicoletti, University of Cambridge, Dept. of Chem Engn & Biotechnol, Cambridge CB2 3RA, United Kingdom. Additional authors for this research include F. de la Pena, R.K. Leary, D.J. Holland, C. Ducati and P.A. Midgley (see also Nanoparticles).
Keywords for this news article include: Europe, Cambridge, United Kingdom, Nanotechnology, Emerging Technologies
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