Category Physics

Are Diamonds GaN’s Best Friend? Revolutionizing Transistor Technology

The integration of a 3C-SiC layer between GaN and diamond significantly reduces thermal resistance at the interface and improves heat dissipation, allowing for better performance.
Credit: Jianbo Liang, Osaka Metropolitan University 

A research team at Osaka Metropolitan University has fabricated a gallium nitride (GaN) transistor using diamond, which of all natural materials has the highest thermal conductivity on earth, as a substrate, and they succeeded in increasing heat dissipation by more than 2X compared with conventional transistors. The transistor is expected to be useful not only in the fields of 5G communication base stations, weather radar, and satellite communications, but also in microwave heating and plasma processing.

Researchers at Osaka Metropolitan University are p...

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Apple Flash: Our Smart Devices will Soon be Smarter

apple ios
Credit: Pixabay/CC0 Public Domain

Our smart devices take voice commands from us, check our heartbeats, track our sleep, translate text, send us reminders, capture photos and movies, and let us talk to family and friends continents away.

Now imagine turbocharging those capabilities. Holding in-depth, natural language exchanges on academic or personal queries; running our vital signs through a global database to check on imminent health issues; packing massive databases to provide comprehensive real-time translation among two or more parties speaking different languages; and conversing with GPS software providing details on the best burgers, movies, hotels or people-watching spots trending along your route.

Tapping into the seductive power of large language models and natural langu...

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A Logical Magic State with Fidelity beyond Distillation Threshold realized on Superconducting Quantum Processor

Experimental results of the prepared different logical states. (a) Logical state fidelity with post-selection in Bloch sphere. The fidelity of the preparation of different logical states is represented as a circle, which is divided into multiple annular sectors, each representing a point on the Bloch sphere, with the radial direction representing the polar angle θ and the tangential direction representing the azimuthal angle φ. The obtained average logical fidelity is 0.8983. (b) Logical measurement results of X ̂_L, Y ̂_L, Z ̂_L as a function of polar angle θ or azimuthal angle φ. The colored dashed curves are the result of fitting with trigonometric function.

Quantum computers have the potential to outperform conventional computers on some tasks, including complex optimization...

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NASA Flies Drones Autonomously for Air Taxi research

An Alta-8 small Unmanned Aircraft System testbed vehicle flies above NASA’s Langley Research Center in Hampton, Virginia. Flying beyond visual line of sight from observers on the ground required special approval from the Federal Aviation Administration and NASA. Credit: NASA / Bowman

Researchers at NASA’s Langley Research Center in Hampton, Virginia recently flew multiple drones beyond visual line of sight with no visual observer. The drones successfully flew around obstacles and each other during takeoff, along a planned route, and upon landing, all autonomously without a pilot controlling the flight. This test marks an important step towards advancing self-flying capabilities for air taxis.

“Flying the vehicles beyond visual line of sight, where neither the vehicle nor the airsp...

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