Physicists’ finding could revolutionize information transmission

Phys.org  July 9, 2019 An international team of researchers (USA – UC Riverside, National High Magnetic Field Laboratory, State University of Florida, Japan) has observed, characterized, and controlled dark trions in tungsten diselenide. Because a trion contains three interacting particles, controllable spin and momentum indices and a rich internal structure, it can carry much more information than a single electron. The lifetime of dark trions is more than 100 times longer than the more common bright trions. The long lifetime enables information transmission by trions over a much longer distance. They demonstrated continuous tuning from positive dark trions to negative […]

Researchers develop nanoparticle films for high-density data storage

Nanowerk  April 3, 2018 Films made of the semiconductor titania and silver nanoparticles are promising for holographic data storage. But exposure to UV light has been shown to erase the data, making the films unstable for long-term information storage. Researchers in China used electron-accepting molecules that measured 1 to 2 nanometers to disrupt the electron flow from the semiconductor to the metal nanoparticles. They fabricated semiconductor films with a honeycomb nanopore structure that allowed the nanoparticles, electron-accepting molecules and the semiconductor to all interface with each other. In tests holograms could be written into them efficiently and with high stability […]