Category Physics

Researchers introduce Transparent Optical Imager with Near-Infrared Sensitivity and Touchless Interface

A transparent optical imager with near-infrared sensitivity and a touchless interface
a, Schematic of a large-area, 16 × 16 visually transparent NIR-sensitive OPD array (imager) that is placed in front of a laptop display. b, Schematic of the touchless user interface demo using NIR-emitting penlight. c, Photograph of the touchless user interface demo using NIR-emitting penlight. d, Schematic of a large-area, 16 × 16 visually transparent NIR-sensitive OPD array (imager) with integrated NIR LEDs that is placed in front of a laptop display. e, Schematic of the touchless user interface demo using gesture recognition of reflected NIR light. f, Photograph of the touchless user interface demo using gesture recognition of reflected NIR light. Credit: Nature Electronics (2023). DOI: 10.1038/s41928-023-00970-8

Most existing devices are operated via the sense of touch,...

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New Material could hold key to Reducing Energy Consumption in Computers and Electronics

Stock computer chip
A University of Minnesota Twin Cities team has, for the first time, synthesized a thin film of a unique topological semimetal material that has the potential to generate more power and memory storage in computer chips while using significantly less energy.
CREDIT: iStock

A University of Minnesota Twin Cities team has, for the first time, synthesized a thin film of a unique topological semimetal material that has the potential to generate more computing power and memory storage while using significantly less energy. The researchers were also able to closely study the material, leading to some important findings about the physics behind its unique properties.

The study is published in Nature Communications.

As evidenced by the United States’ recent CHIPS and Science Act, there is a ...

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Thermal Cloak Passively keeps Electric Vehicles Cool in the Summer and Warm in the Winter


•Scalable, passive, all-season temperature regulation through photon recycling
•Daytime sub-ambient passive cooling by 8.0°C in summer
•Nighttime supra-ambient passive warming by 6.8°C in winter
•Fire retardant, reliable in thermal, cryogenic, vibration, and corrosive environments

When an electric vehicle is parked outside, its temperature can swing wildly from day to night and season to season, which can lead to deterioration of the battery. To dampen these fluctuations and extend the battery’s lifespan, researchers have designed an all-season thermal cloak that can cool an electric vehicle by 8°C on a hot day and warm it by 6.8°C at night...

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AI finds a way to People’s Hearts (literally!)

Evaluation of Left Ventricular Ejection Fraction
Left: Chest radiograph
Right: Visualization of the grounds for the AI’s judgment
Credit: Daiju Ueda, OMU

Unveiling a groundbreaking and accurate AI-based method to classify cardiac function and disease using chest X-Rays. AI (artificial intelligence) may sound like a cold robotic system, but Osaka Metropolitan University scientists have shown that it can deliver heartwarming — or, more to the point, “heart-warning” — support. They unveiled an innovative use of AI that classifies cardiac functions and pinpoints valvular heart disease with unprecedented accuracy, demonstrating continued progress in merging the fields of medicine and technology to advance patient care. The results will be published in The Lancet Digital Health.

Valvular hea...

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