Total reflection X-rays fluorescence (TXRF) is a surface elemental analysis technique often used for the ultra-trace analysis of particles, residues, and impurities on smooth surfaces. Due to its ...

Light is often thought to reflect from a flat surface at the same angle at which it is incident. Nature Photonics spoke to Han Woerdman about the observation of angular deviations of reflected beams.

Single-molecule fluorescence experiments involve the study of individual fluorescent molecules, and can provide information that would be hidden in measurements involving a large number of molecules.

In September 2022, humanity crashed a spacecraft into an asteroid—on purpose. The objective of NASA's Double Asteroid Redirection Test (DART) was to see if we could intentionally modify the orbit of ...