Compact, wavelength-on-demand Quantum Cascade Laser chip created

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Compact, wavelength-on-demand Quantum Cascade Laser chip created
Engineers at Harvard's School of Engineering and Applied Sciences have demonstrated a highly versatile, compact and portable Quantum Cascade Laser sensor for the fast detection of a large number of chemicals, ranging from infinitesimal traces of gases to liquids, by broad tuning of the emission wavelength. The potential range of applications is huge, including homeland security, medical diagnostics such as breadth analysis, pollution monitoring, and environmental sensing of the greenhouse gases responsible for global warming.


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All News summaries for February 06, 2008

The Lightness of Electrons in a Twisting Metal Crystal

2 minutes ago | User rating: not rated yet
A team of researchers at Princeton University's Materials Research Science and Engineering Center has observed electrons moving through a crystal of bismuth metal behaving like light.

Scientists demonstrate highly directional semiconductor lasers

36 minutes ago | User rating: not rated yet
(PhysOrg.com) -- Applied scientists at Harvard collaborating with researchers at Hamamatsu Photonics in Hamamatsu City, Japan, have demonstrated, for the first time, highly directional semiconductor lasers ...

Proposed Particle Help Explains Odd Galactic Photons

6 hours ago | User rating: not rated yet
In 2002, a satellite called INTEGRAL was launched by the European Space Agency with an instrument on board to detect and measure gamma rays from space. Four years later, it yielded some intriguing data: An unusually high ...

Electron microscopy enters the picometer scale

Jul 24, 2008 | User rating: not rated yet
Jülich scientists have succeeded in precisely measuring atomic spacings down to a few picometres using new methods in ultrahigh-resolution electron microscopy. This makes it possible to find out decisive parameters ...

Revolutionary materials reflect ancient forms

Jul 24, 2008 | User rating: not rated yet
(PhysOrg.com) -- Although order is pleasing to the eye, it can quickly become boring. In Islamic architecture therefore, decoration often follows a strict yet aperiodic pattern. Similar structures also form ...
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