Category Technology/Electronics

For the first time, the quantum state of a superconducting qubit was transferred with a coaxial cable to another qubit. Credit: Copyright ETH Zurich /M. Pechal, T. Walter, P. Kurpiers

In the new quantum information technologies, fragile quantum states have to be transferred between distant quantum bits. Researchers have now realized such a quantum transmission between two solid-state qubits at the push of a button. At the ETH in Zurich, a team of physicists led by Andreas Wallraff of the Laboratory for Solid State Physics has now succeeded in transmitting quantum information, at the push of button and with high fidelity, between two quantum bits roughly a metre apart.

The main peculiarity of quantum information technologies, such as quantum computers and quantum cryptography, is the use of...

Photo of high-performance and high-density blue f-VLED arrays. Credit: KAIST

A KAIST research team developed a crucial source technology that will advance the commercialization of micro LEDs. Professor Keon Jae Lee from the Department of Materials Science and Engineering and his team have developed a low cost production technology for thin-film blue flexible vertical micro LEDs (f-VLEDs).

In CES 2018, micro LED TV was spotlighted as a strong candidate for replacing the active-matrix organic light-emitting diode (AMOLED) display. Micro LED is a sub-100 um light source for red, green and blue light, which has advantages of outstanding optical output, ultra-low power consumption, fast response speed, and excellent flexibility.

However, the current display industry has utilized the individual ...

Substituting the cathode material with oxygen and cobalt prevents lithium from breaking chemical bonds and preserves the material’s structure. Credit: Brookhaven National Laboratory

Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries. As the demand for smartphones, electric vehicles, and renewable energy continues to rise, scientists are searching for ways to improve lithium-ion batteries – the most common type of battery found in home electronics and a promising solution for grid-scale energy storage. Increasing the energy density of lithium-ion batteries could facilitate the development of advanced technologies with long-lasting batteries, as well as the widespread use of wind and solar energy...

MIT engineers have created soft, 3-D-printed structures whose movements can be controlled with a wave of a magnet, much like marionettes without the strings. Credit: Felice Frankel

New printing technique could be used to develop remotely controlled biomedical devices. MIT engineers have created soft, 3D-printed structures whose movements can be controlled with a wave of a magnet. The menagerie of structures that can be magnetically manipulated includes a smooth ring that wrinkles up, a long tube that squeezes shut, a sheet that folds itself, and a spider-like “grabber” that can crawl, roll, jump, and snap together fast enough to catch a passing ball. It can even be directed to wrap itself around a small pill and carry it across a table.

The researchers fabricated each structure from a new ...