Oppositely to UV/VIS spectroscopy, which measures electronic transitions, infrared (IR) spectroscopy determines the vibration and rotation of molecules as absorption phenomena. The functional groups ...

The infrared spectrum can be split into near IR, mid-IR and far IR. Near IR has the greatest energy and can penetrate a sample much deeper than mid or far IR, but it is less sensitive than mid or far ...

Improved functional near infrared spectroscopy enables enhanced brain imaging. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2019 / 08 / 190821135246.htm ...