ScienceDaily: Top Technology News |
- Arrays of long nanotubes may help measure terahertz laser power
- Engineering excitable cells for studies of bioelectricity and cell therapy
- Twisted tale of our galaxy's ring: Strange kink in Milky Way
- New graphene discovery boosts oil exploration efforts, could enable self-powered microsensors
| Arrays of long nanotubes may help measure terahertz laser power Posted: 19 Jul 2011 02:15 PM PDT Terahertz radiation can penetrate numerous materials -- plastic, clothing, paper and some biological tissues -- making it an attractive candidate for applications such as concealed weapons detection, package inspection and imaging skin tumors. There is now no standard method for measuring the absolute output power of terahertz lasers, but researchers have found that dense arrays of extra-long carbon nanotubes are promising coatings for prototype terahertz laser power detectors.  |
| Engineering excitable cells for studies of bioelectricity and cell therapy Posted: 19 Jul 2011 01:15 PM PDT By altering the genetic makeup of normally "unexcitable" cells, bioengineers have turned them into cells capable of generating and passing electrical current.  |
| Twisted tale of our galaxy's ring: Strange kink in Milky Way Posted: 19 Jul 2011 12:12 PM PDT New observations from the Herschel Space Observatory show a bizarre, twisted ring of dense gas at the center of our Milky Way galaxy. Only a few portions of the ring, which stretches across more than 600 light-years, were known before. Herschel's view reveals the entire ring for the first time, and a strange kink that has astronomers scratching their heads.  |
| New graphene discovery boosts oil exploration efforts, could enable self-powered microsensors Posted: 19 Jul 2011 06:38 AM PDT Researchers have developed a new method to harvest energy from flowing water. The research team demonstrated how the flow of water over surfaces coated with the nanomaterial graphene could generate small amounts of electricity.  |
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