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Latest Surface enhanced Raman spectroscopy Stories

Researchers Unveil Carbon Nanotube Jungles To Better Detect Molecules
2013-11-06 13:12:01

Lawrence Livermore National Laboratory Researchers from Lawrence Livermore National Laboratory (LLNL) and the Swiss Federal Institute of Technology (ETH) in Zurich have developed a new method of using nanotubes to detect molecules at extremely low concentrations enabling trace detection of biological threats, explosives and drugs. The joint research team, led by LLNL Engineer Tiziana Bond and ETH Scientist Hyung Gyu Park, are using spaghetti-like, gold-hafnium-coated carbon nanotubes...

Technology Improved To Detect Hazardous Chemicals
2012-11-21 11:11:49

Imperial College London Scientists at Imperial College London have developed a system to quickly detect trace amounts of chemicals like pollutants, explosives or illegal drugs. The new system can pick out a single target molecule from 10 000 trillion water molecules within milliseconds, by trapping it on a self-assembling single layer of gold nanoparticles. The team of scientists, all from the Department of Chemistry at Imperial, say this technology opens the way to develop devices...

2012-10-22 10:57:31

Enhanced local electric fields are predominant in nonlinear optical properties, particularly in surface-enhanced Raman scattering (SERS), which is a sensitive technique used for the detection of trace amounts of chemicals. Analysis of the electric fields around nanostructures indicates that they can provide a basic foundation to obtain greater SERS intensity. Professor ZHANG Zhongyue and his group from the College of Physics and Information Technology at Shaanxi Normal University have...

2012-03-21 15:40:17

Positive identification of plasmons in nano particles could open new engineering possibilities at the nanoscale The physical phenomenon of plasmon resonances in small metal particles has been used for centuries. They are visible in the vibrant hues of the great stained-glass windows of the world. More recently, plasmon resonances have been used by engineers to develop new, light-activated cancer treatments and to enhance light absorption in photovoltaics and photocatalysis. "The...

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2011-04-04 21:15:00

Surface Enhanced Raman Spectroscopy (SERS) reveals invisible colors in art masterpiecesWhat do Winslow Homer's For to Be a Farmer's Boy (1887) and Vincent van Gogh's The Bedroom (1889) have in common?First, they are both displayed at the Art Institute of Chicago (AIC). Homer's painting represents a high point in the career of America's premiere watercolorist, while Van Gogh's painting is perhaps one of most recognizable paintings in the world. However, they also share a key physical...

2011-03-21 16:59:32

Princeton researchers have invented an extremely sensitive sensor that opens up new ways to detect a wide range of substances, from tell-tale signs of cancer to hidden explosives. The sensor, which is the most sensitive of its kind to date, relies on a completely new architecture and fabrication technique developed by the Princeton researchers. The device boosts faint signals generated by the scattering of laser light from a material placed on it, allowing the identification of various...

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2011-02-10 12:08:18

In asymmetric warfare, early detection and identification of trace level chemical and biological agents and explosive compounds is critical to rapid reaction, response, and survivability. While there are many methods currently being used that can detect these threats, none allow for the unique fingerprinting of threat agents at trace levels. A research team, led by Drs. Joshua Caldwell and Orest Glembocki, scientists at the U.S. Naval Research Laboratory, Electronic Science and Technology...

2011-01-12 00:01:32

In a timely review paper, scientists from Japan, Germany, and Spain provide a highly relevant overview of the history, physical interpretation and applications of plasmons in metallic nanostructures. (PRWeb UK) January 11, 2011 Tadaaki Nagao at the International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) and colleagues in Germany and Spain present a review on plasmons in metallic nanomaterials. The article is published this week in the...

2010-09-14 18:36:43

A new "on-chip" method for sorting and identifying bacteria has been created by biomedical engineers at Taiwan's National Cheng Kung University. The technique, developed by Hsien-Chang Chang, a professor at the Institute of Biomedical Engineering and the Institute of Nanotechnology and Microsystems Engineering, along with former graduate student I-Fang Cheng and their colleagues, is described in the AIP journal Biomicrofluidics. Using roughened glass slides patterned with gold electrodes, the...

2010-05-14 09:22:19

Using nanotechnology and a patented signal enhancing technique developed at the University of Georgia, UGA researchers have discovered a rapid, sensitive and cost-effective method to detect and identify a number of rotavirus strains and genotypes in less than one minute with greater than 96 percent accuracy. In their study, Ralph A. Tripp and Jeremy D. Driskell, researchers in the College of Veterinary Medicine's department of infectious diseases, and Yiping Zhao and Richard Dluhy,...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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