Using magnetic worms to engineer nanoscale communication systems

Nanowerk  July 15, 2020 High-frequency electromagnetic waves are used to transmit and process information in microelectronic devices. To gain a better understanding of precisely the way magnons behave and propagate in different structures researchers in Switzerland examined how electromagnetic waves propagate, and how they could be manipulated, in artificial ferromagnetic quasicrystals. They found that under controlled conditions a single electromagnetic wave coupled to an artificial quasicrystal splits into several spin waves which then propagate within the structure. Each of these spin waves represents a different phase of the original electromagnetic wave, carrying different information. By imaging wavefronts in quasicrystals, insight […]

First study of terahertz radiation in liquids

Phys.org  November 29, 2018 The most common sources of terahertz radiation are solid materials. An international team of researchers (USA – University of Rochester, Russia) provides fundamental insights into the THz wave generation process in water and an alternative perspective for studying laser-induced breakdown in liquids. They substantiate the radiation patterns of terahertz radiation in a liquid and its dependence on the angle at which the liquid collides with the pump radiation. They plan to solve the problem of THz absorption by optimizing the type of fluid, the shape of the jet and the pump power and several other parameters. […]

Bursting the clouds for better communication

Phys.org  October 18, 2018 Researchers in Switzerland have developed a laser that heats the air over 1,500 degrees Celsius and produces a shock wave to expel the suspended water droplets sideways. This creates a hole a few centimetres wide over the entire thickness of the cloud. The laser beam should be kept on the cloud and the laser that contains the information should be sent at the same time. It then slips into the hole through the cloud and allows the data to be transferred. This “laser cleaner” is currently being tested on artificial clouds that are 50 cm thick […]