Sensor could detect explosives on molecular level

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One of the newest tools in the homeland security effort could come from Utah.

From his office that overlooks the Salt Lake Valley, Dr. Ling Zang is working to improve a device that basically mimics a dog's nose. It's a sensor that can detect the presence of explosives, on a molecular level.

"So the best sensor, the ideal, should be able to detect the explosive device 15 meters away," Zang said.

Zang and a group of researchers have already patented a portable device that can do that. Now he's working with engineers at the University of Utah to make it more sensitive and more able to hone in on the explosive's source.

The idea is to better detect possible bombs everywhere, from Iraq to the local supermarket.

Zang was recruited to the U as part of the Utah Science and Technology Research Initiative started by lawmakers to attract top researchers to Utah and to capitalize on what the research produces.

E-mail: mgiauque@ksl.com