Researchers create metasurface that enables multichannel terahertz transmission

Mar 01, 2023 (Nanowerk News) Researchers have designed and demonstrated two all-silicon terahertz metasurface devices that can be used to create four optical channels for simultaneously implementing different optical functions. This capability could be useful for a variety of applications such as communication, terahertz imaging, particle manipulation or encoding quantum...

Quantum chemistry: Molecules caught tunneling

Mar 01, 2023 (Nanowerk News) Quantum effects can play an important role in chemical reactions. Physicists led by Roland Wester of the University of Innsbruck, Austria, have now for the first time observed a quantum mechanical tunneling reaction in experiments. The observation can also be described exactly in theory. With...

Spiral pattern gives clue to how high-mass stars form

Feb 28, 2023 (Nanowerk News) New observations have revealed a spiral pattern in a disk of material around a still forming, but already high-mass, baby star. This indicates that there is gravitational instability in the disk, which has important implications for how high-mass stars form (Nature Astronomy, "A Keplerian disk...