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Spectroscopy

Spectroscopy

Table-top frequency comb probes protein structures

25 Jun 2019
Infrared comb
Wet comb: NIST’s tabletop frequency comb being used to identify water molecules in air. The yellow squiggle at the top of the screen is the electric field of mid-infrared laser light that has passed through air in the lab. The orange pattern shows the corresponding spectrum of the light, with the downward spikes indicating the frequencies absorbed by water. (Courtesy: NIST)
An infrared frequency comb small enough to fit on top of a table has been used to probe the structur

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Sam Jarman is a science writer based in the UK
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