News tagged with surface plasmons
Researchers efficiently couple light from a plane wave into a surface plasmon mode
Researchers from the NIST Center for Nanoscale Science and Technology have made a grating coupler that transmits over 45 % of the incident optical energy from a plane wave into a single surface plasmon polariton (SPP) mode ...
Feb 02, 2012 |
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Microscopy reveals 'atomic antenna' behavior in graphene
Atomic-level defects in graphene could be a path forward to smaller and faster electronic devices, according to a study led by researchers at the Department of Energy's Oak Ridge National Laboratory.
Nanotechnology / Nanomaterials
Jan 31, 2012 |
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Biochip measures glucose in saliva, not blood
For the 26 million Americans with diabetes, drawing blood is the most prevalent way to check glucose levels. It is invasive and at least minimally painful. Researchers at Brown University are working on a ...
Jan 23, 2012 |
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Plasmonic device converts light into electricity
(PhysOrg.com) -- While the most common device for converting light into electricity may be photovoltaic (PV) solar cells, a variety of other devices can perform the same light-to-electricity conversion, such ...
Nov 09, 2011 |
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Nanoparticle imaging: A resonant improvement
Raman spectroscopy is a powerful technique for analyzing atomic structure based on the inelastic scatter of light from molecules, with diverse applications including medical imaging and chemical sensing. Researchers ...
Nanotechnology / Bio & Medicine
Oct 28, 2011 |
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Nanobelts support manipulation of light
(PhysOrg.com) -- They look like 2-by-4s, but the materials being created in a Rice University lab are more suited to construction with light.
Oct 14, 2011 |
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World’s first 3D plasmon ruler: Taking the 3-D measure of macromolecules
(PhysOrg.com) -- The world's first three-dimensional plasmon rulers, capable of measuring nanometer-scale spatial changes in macrmolecular systems, have been developed by researchers with the U.S. Department ...
Jun 16, 2011 |
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Periodic structures in organic light-emitters can efficiently enhance, replenish surface plasmon waves
The irradiation of a metal surface with light or electrons can result in the formation of coherent electronic oscillations called surface plasmons, an effect ideal for applications such as optical communications ...
Jun 10, 2011 |
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Highly sensitive graphene biosensors based on surface plasmon resonance
Adding a few graphene layers onto the conventional gold-film SPR biosensor will boost up its sensitivity dramatically. The improved sensitivity comes from the graphene layer’s increased adsorption of ...
May 05, 2011 |
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New kid on the plasmonic block
With its promise of superfast computers and ultrapowerful optical microscopes among the many possibilities, plasmonics has become one of the hottest fields in high-technology. However, to date plasmonic properties ...
Apr 18, 2011 |
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Electron resonances could greatly enhance the response of optical chip photodetectors
Optical chips are the latest innovation in silicon technology with the potential to revolutionize telecommunications. Their operation relies on several key components, including light-emitting devices, waveguides ...
Mar 28, 2011 |
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The 'Spaser' heats up laser technology
Lasers have revolutionized the communications and medical industries. They focus light to zap tumors and send digital TV signals and telephone communications around the world.
Jan 13, 2011 |
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Visualizing viruses: new research pinpoints tiny invaders
In the war against infectious disease, identifying the culprit is half the battle. Now, research professor Shaopeng Wang and his colleagues from the Biodesign Institute at Arizona State University, describe a new method for ...
Aug 24, 2010 |
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Imec reports asymetric nanostructures for early and more accurate prediction of cancer
Researchers at the nanotechnology research center Imec (Belgium) have demonstrated biosensors based on novel nanostructure geometries that increase the sensitivity and allow to detect extremely low concentrations of specific ...
Nanotechnology / Bio & Medicine
Jun 23, 2010 |
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Nanoparticles Provide a Targeted Version of Photothermal Therapy for Cancer
(PhysOrg.com) -- Using easily prepared gold nanocages that are able to escape from the blood stream and accumulate in tumors, a team of investigators from the Washington University in St. Louis has shown that they can use ...
Nanotechnology / Bio & Medicine
Apr 23, 2010 |
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