'Handy pen' lights up when exposed to nerve gas or spoiled food vapors (IMAGE)

American Chemical Society

'Handy pen' lights up when exposed to nerve gas or spoiled food vapors

Caption

The handy pen's tip changes color when exposed to harmful gases.

Credit

Adapted from <i>ACS Materials Letters</i> <b>2021</b>, DOI: 10.1021/acsmaterialslett.0c00516

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