Ultrafast electron imaging captures never-before-seen nuclear motions in hydrocarbon molecules excited by light The interactions between light and nitroaromatic hydrocarbon molecules have important implications for chemical processes in our atmosphere that can lead to smog and pollution. However, changes in molecular geometry due to interactions with light can be very difficult to measure because they occur at sub-Angstrom length scales and femtosecond time scales.
https://phys.org/news/2024-12-....ultrafast-electron-i