Manufacturing Industry
Glass semiconductor softens under laser, then re-hardens.(POLYMERS/CERAMICS)
Advanced Materials & Processes, November, 2004
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A special type of glass that softens when exposed to very low-level laser light but hardens again when the light is switched off is said to be under development at the Ohio State University, Columbus. The higher the laser power, the softer the glass. In fact, with the laser set to only six milliwatts, the material becomes 50% softer than its normal state.
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"Normally, you'd have to almost melt the glass to get it that soft, but here we were doing it with a light source that was essentially a laser pointer, and with no heat at all," says Prof. Ratnasingham Sooryakumar. ...
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