IR detection via “quenching”

Education Science Technology

In Jeri Ellsworth latest nerd lab vid notes, she explains how to make an IR detection device by “quenching” copper-doped zinc sulfide (ZnS:CU) glow powder and how to measure temperature with thermally-quenched phosphors.

Practical uses of Quenching in Phosphors

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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at

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