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Recent Research from Weizmann Institute of Science Highlight Findings in Nanoparticles (Modular Plasmonic Antennas Built of Ultrathin Silica-Shell...

August 15, 2014



Recent Research from Weizmann Institute of Science Highlight Findings in Nanoparticles (Modular Plasmonic Antennas Built of Ultrathin Silica-Shell Silver-Core Nanoparticles)

By a News Reporter-Staff News Editor at Science Letter -- Research findings on Nanoparticles are discussed in a new report. According to news reporting originating in Rehovot, Israel, by NewsRx journalists, research stated, "Dimers of metallic nanoparticles can serve as antennas to locally enhance optical fields through plasmonic excitations. Such dimeric structures can be particularly useful for sensing applications using surface-enhanced Raman scattering (SERS)."

The news reporters obtained a quote from the research from the Weizmann Institute of Science, "It has been challenging to devise a synthetic scheme that facilitates creating dimer antennas from different types of particles, at the same time allowing control over the size of the gap between the particles and enabling the introduction of any molecule into the gap. We describe here a method that answers to this challenge. We first introduce a recipe for the creation of a silica shell as thin as 1 nm on silver particles. Analyte molecules are attached to the silica shell, and finally, the silica-shell silver-core particles, whose surface is negatively charged, are mixed with positively charged bare silver particles to create dimers."

According to the news reporters, the research concluded: "A demonstration of SERS from individual dimers with gaps of 1.4 and 3.7 nm paves the way to systematic studies of the effect of gap size and composition on plasmonic enhancement."

For more information on this research see: Modular Plasmonic Antennas Built of Ultrathin Silica-Shell Silver-Core Nanoparticles. Langmuir, 2014;30(26):7919-7927. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)

Our news correspondents report that additional information may be obtained by contacting N. Zohar, Weizmann Inst Sci, Dept. of Chem Phys, IL-76100 Rehovot, Israel (see also Nanoparticles).

Keywords for this news article include: Asia, Israel, Rehovot, Nanotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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