Category Technology/Electronics

Ultrathin Quantum Dot LED that can be Folded Freely as Paper

The ultra-thin QLED can be sharply folded along the laser-etched line, just like the origami paper artwork. A three-dimensional foldable QLED with various user-customized shapes such as airplanes, butterflies, and pyramids was fabricated. The 3D foldable QLED can freely transform between 2D and 3D structures, which allows for a dynamic display of visual information.
Fabrication of 3D foldable QLEDs that can be folded freely as paper
The ultra-thin QLED can be sharply folded along the laser-etched line, just like the origami paper artwork. A three-dimensional foldable QLED with various user-customized shapes such as airplanes, butterflies, and pyramids was fabricated. The 3D foldable QLED can freely transform between 2D and 3D structures, which allows for a dynamic display of visual information.

The new device can be folded into complex 3D structures such as butterflies, airplanes, and pyramids...

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Tuning Flexible Circuits with Light

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Schematic showing the process that allows for precise control of the organic transistor characteristics using light irradiation. The inset displays a photograph of the final device. (credit: Takafumi Uemura et al.)

Researchers from SANKEN (The Institute of Scientific and Industrial Research) at Osaka University and JOANNEUM RESEARCH (Weiz, Austria), have shown how exposing an organic polymer to ultraviolet light can precisely modify its electronic properties. This work may aid in the commercialization of flexible electronics that can be used for real-time healthcare monitoring, along with data processing.

While the integrated circuits inside your smart phone are quite impressive, they lack certain important features...

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Quantum Cryptography Records with Higher-Dimensional Photons

Marcus Huber in front of a blackboard
Prof. Marcus Huber from the Atomic Institute of TU Wien 

A new and much faster quantum cryptography protocol has been developed: Usually, quantum cryptography is done with photons that can be in two different states. Using eight different states, cryptographic keys can be generated much faster and with much more robustness against interference.

Quantum cryptography is one of the most promising quantum technologies of our time: Exactly the same information is generated at two different locations, and the laws of quantum physics guarantee that no third party can intercept this information. This creates a code with which information can be perfectly encrypted.

The team of Prof...

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Compact Amplifier could Revolutionize Optical Communication

Chalmers’ new amplifier offers high performance, is compact enough to integrate into a chip just millimeters in size, and does not generate excess noise.​​​​​ â€‹â€‹Illustration: Yen Strandqvist​

Researchers at Chalmers University of Technology, Sweden, present a unique optical amplifier that is expected to revolutionise both space and fiber communication. The new amplifier offers high performance, is compact enough to integrate into a chip just millimeters in size, and – crucially – does not generate excess noise.

“This could be compared to switching from older, dial-up internet to modern broadband, with high speed and quality,” says Professor Peter Andrekson, Head of the Photonics Laboratory at the Department of Microtechnology and Nanoscience at Chalmers.

Optical c...

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