Category Technology/Electronics

A Gold Butterfly can make its own Semiconductor Skin

Calculated localized field (left) and temperature distribution (right) of the nano-butterfly structure. (Fujiwara H., et al, Nano Letters. December 23, 2019.)

A nanoscale gold butterfly provides a more precise route for growing/synthesizing nanosized semiconductors that can be used in nano-lasers and other applications.

Hokkaido University researchers have devised a unique approach for making nanosized semiconductors on a metal surface. The details of the method were reported in the journal Nano Letters and could further research into the fabrication of nanosized light and energy emitters.

The approach, developed by Hokkaido University’s Research Institute for Electronic Science and Hokkai-Gakuen University, involves generating localized heat on a gold nanoparticle within a ...

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New Electrode Design may lead to more Powerful Batteries

New research by engineers at MIT and elsewhere could lead to batteries that can pack more power per pound and last longer.
Credit: MIT News

New lithium metal anode could improve the longevity and energy density of future batteries. New research by engineers at MIT and elsewhere could lead to batteries that can pack more power per pound and last longer, based on the long-sought goal of using pure lithium metal as one of the battery’s two electrodes, the anode.

The new electrode concept comes from the laboratory of Ju Li, the Battelle Energy Alliance Professor of Nuclear Science and Engineering and professor of materials science and engineering...

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First All-Optical, Stealth Encryption Technology developed

Concept Optical Encryption Technology
“Basically, the innovative breakthrough is that if you can’t detect it, you can’t steal it.” — Prof. Dan Sadot, Director of the Optical Communications Research Laboratory

Optical end-to-end solution includes encryption, transmission, decryption, and detection. BGN Technologies, the technology-transfer company of Ben-Gurion University of the Negev (BGU), Israel, is introducing the first all-optical “stealth” encryption technology that will be significantly more secure and private for highly sensitive cloud-computing and data center network transmission. The new all-optical encryption innovation will be introduced at the Cybertech Global Tel Aviv conference taking place January 28-30, 2020 in Tel Aviv, Israel.

“Today, information is still encrypted using digital techniques...

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Self-Learning Heat­ing Control system Saves Energy

The “Urban Mining and Recycling” unit in the NEST research building has two student rooms. One of them was equipped with a self-learning heating and cooling control system. Image: Zooey Braun, Stuttgart

Can buildings learn to save all by themselves? Researchers think so. In their experiments, they fed a new self-learning heat­ing control system with temperature data from the previous year and the current weather forecast. The ‘smart’ control system was then able to assess the building’s behavior and act with good anticipation. The result: greater comfort, lower energy costs.

Factory halls, airport terminals and high-rise office buildings are often equipped with automated “anticipatory” heating systems...

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