Category Technology/Electronics

Researchers demonstrate long delays and narrow filtering of microwave signals in silicon-photonic circuits, based on surface acoustic waves. High-end wireless and cellular networks rely on light for the distribution of signals. The selective processing of such signals requires long delays: too long to support on a chip using light alone. A research team brought together light and ultrasonic waves to realize ultra-narrow filters of microwave signals, in silicon integrated circuits. The concept allows large freedom for filters design.

The continued growth of wireless and cellular data traffic relies heavily on light waves. Microwave photonics is the field of technology that is dedicated to the distribution and processing of electrical information signals using optical means...

A research team has developed new technology that uses tiny smart devices known as spin-torque oscillators to harvest and convert wireless radio frequencies into energy to power small electronics.

With the rise of the digital age, the amount of WiFi sources to transmit information wirelessly between devices has grown exponentially. This results in the widespread use of the 2.4GHz radio frequency that WiFi uses, with excess signals available to be tapped for alternative uses.

To harness this under-utilised source of energy, a research team from the National University of Sin...

A nanophotonics-based LiDAR technology developed by a POSTECH research team was presented as an invited paper in Nature Nanotechnology, the leading academic journal in the field of nanoscience and nanoengineering.

In this paper, a POSTECH research team (led by Professor Junsuk Rho of the departments of mechanical engineering and chemical engineering, postdoctoral researcher Dr. Inki Kim of the Department of Mechanical Engineering, and Ph.D. candidate Jaehyuck Jang of the Department of Chemical Engineering) in cooperation with the French National Science Institute (CNRS-CRHEA) focused on the LiDAR device developed through studying the metamaterials based ultralight nanophotonics.

In addition, the paper introduces core nan...

Researchers demonstrate a solution to a 40-year problem. A stable, lithium-metal solid state battery has been designed that can be charged and discharged at least 10000X — far more cycles than have been previously demonstrated — at a high current density. The battery technology could increase the lifetime of electric vehicles to that of the gasoline cars — 10 to 15 years — without the need to replace the battery...