To warn of chemical attacks and help save lives, it's vital to quickly determine if even trace levels of potentially deadly chemicals—such as the nerve gas sarin and other odorless, colorless agents—are present. ...
Optics & Photonics
Aug 14, 2012
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(Phys.org) -- The smell of freshly cut grass may stir memories of baseball parks, cookouts or lazy summer afternoons in the suburbs, but what we perceive as a sweet aroma is actually the plant equivalent of a distress call, ...
Biotechnology
Aug 9, 2012
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Nanometre-scale gold particles are currently intensively investigated for possible applications as catalysts, sensors, biolabels, drug delivery devices, biological contrast agents and as components in photonics and molecular ...
Nanomaterials
Aug 2, 2012
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(Phys.org) -- Graphene has many promising applications on its own, but pairing the two-dimensional material with the semiconductor titanium dioxide (TiO2) extends its capabilities even further. A team of chemists at the University ...
Chemical sensors are exceedingly good at detecting a single substance or a class of chemicals, even at highly rarified concentrations. Biological noses, however, are vastly more versatile and capable of discriminating subtle ...
Nanomaterials
May 2, 2012
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Portable gas sensors can allow you to search for explosives, diagnose medical conditions through a patient's breath, and decide whether it's safe to stay in a mine.
Analytical Chemistry
May 1, 2012
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Scientists from the University of Illinois at Urbana-Champaign and the company Dioxide Materials have demonstrated that randomly stacked graphene flakes can make an effective chemical sensor.
Nanomaterials
Jan 17, 2012
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In an emergency such as a factory fire, ascertaining which gases are present in the air is critical to preventing or minimizing poisoning (Fig. 1). This requires gas sensors that react quickly and provide a visual signal. ...
Materials Science
Jan 13, 2012
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Researchers from North Carolina State University, Sandia National Laboratories, and the University of California, San Diego have developed new technology that uses microneedles to allow doctors to detect real-time chemical ...
Biochemistry
Dec 13, 2011
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Although they found that graphene makes very good chemical sensors, researchers at the University of Illinois at Urbana-Champaign have discovered an unexpected "twist"—that the sensors are better when the graphene is ...
Nanomaterials
Nov 29, 2011
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