Article: Bright ideas at Quantum Devices.

Byline: Judy Newman

Oct. 29--BARNEVELD -- In this small burg, about 30 miles west of Madison, lies a slice of Silicon Valley.

It takes the form of a company whose products have helped grow roses on the space shuttle, hold wiring steady on Army tanks being used in Iraq, measure your pulse and blood oxygen, control movement in industrial machines and treat ailments from carpal tunnel syndrome to cancer.

The company is Quantum Devices, and most of its products are based on red lights. Not the kind in stop lights -- which, by the way, you won't find in this Iowa County community of 1,184 -- but tiny red pinpoints of light that make up ...

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