New microsensor measures volatile organic compounds in water and air on-site

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Photograph of the microsensor chip with four disk-type microresonators in the center. The size of the chip is 3.5 millimeters by 3.5 millimeters. Credit: Gary Meek
Photograph of the microsensor chip with four disk-type microresonators in the center. The size of the chip is 3.5 millimeters by 3.5 millimeters. Credit: Gary Meek

Researchers at the Georgia Institute of Technology have developed a miniature sensor that uses polymer membranes deposited on a tiny silicon disk to measure pollutants present in aqueous or gaseous environments. An array of these sensors with different surface coatings could be used during field-testing to rapidly detect many different chemicals.


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All News summaries for September 17, 2007

Study explores plausibility of bulbs and tubers in the diet of early human ancestors

10 hours ago | User rating: not rated yet
(PhysOrg.com) -- It was a dirty job, but somebody had to do it. Anthropologist Nathaniel J. Dominy of the University of California, Santa Cruz, has advanced the investigation of the diet of early human ancestors ...

Wealth Does Not Dictate Concern for the Environment

11 hours ago | User rating: not rated yet
It has been a long-held assumption that poor nations will not support efforts to protect the environment since their citizens are too preoccupied with meeting basic needs, such as food and housing. However, a new study in ...

Construction workers unearth mammoth bones in Minsk

11 hours ago | User rating: not rated yet
Workers building a business centre in Minsk came across the bones of two mammoths thought to be between 25,000 and 45,000 years old, an official from Belarus' Academy of Sciences told AFP on Friday.

Women's access to credit affects efficiency in rural households

11 hours ago | User rating: not rated yet
Rural strategies designed to induce economic growth often emphasize the need to improve access to capital for poor households. However, this approach implicitly assumes that family members pool all their resources and allocate ...

Colonial heritage metaphors used in US military conflicts

11 hours ago | User rating: not rated yet
The historical reference to "Indian Country" presents a complex metaphor. For many Native Americans it signifies home, family, and territory; however, for others the term can refer to colonialism and Native American land ...
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