ultrafast
-
Chemistry
Ultrafast electron imaging captures never-before-seen nuclear motion in hydrocarbon molecules excited by light
The researchers used a genetic algorithm to obtain the time-varying molecular structure of photoexcited o-nitrophenol from ultrafast electron diffraction data. Credit: JPF Nunes (generated using Microsoft Copilot) Interactions between light molecules and nitroaromatic hydrocarbon molecules have important effects on chemical processes in the atmosphere that can cause smog and pollution. However, changes in molecular geometry due to interaction with light…
Read More » -
Chemistry
Ultrafast imaging technology reveals how ozone-depleting molecules react to light
A long-predicted ultrafast pathway in the UV photochemistry of bromoform has been visualized for the first time by femtosecond time-resolved electron diffraction. Credit: Melody Li, Debadarshini Mishra, Lars Hoffmann Researchers have observed for the first time how bromoform rearranges its atoms in less than a trillionth of a second after being subjected to an ultraviolet (UV) pulse. The imaging technique…
Read More » -
Physics
Research team succeeds in ultra-fast switching of tiny light source
Intense light pulses in the terahertz range separate the charged, emissive trions into individual electrons and neutral excitons. Credit: Giuseppe Meneghini Ultrathin materials consisting of just a few atomic layers hold promise for applications in electronics and quantum technology. An international team led by the Technical University of Dresden has made remarkable progress in experiments carried out at the Helmholtz…
Read More »
