- Science
- Global
How one molecule's 'voice' was captured: Infrared light meets scanning tunneling microscopy
- February 19, 2026 at 9:40 PM
- 15 views
When things vibrate, they make sounds. Molecules do too, but at frequencies far beyond human hearing. Chemical bonds stretch, bend, and twist at characteristic rates that fall in the infrared region of the electromagnetic spectrum. Infrared spectroscopy, which measures how light excites these vibrations, is often likened to listening to a molecule's voice.
Originally published at Phys.org