Category Physics

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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Testing Real Driverless Cars in a Virtual Environment

Testing real driverless cars in a virtual environment
Public road development of AV driving functions. Credit: Sensors (2023). DOI: 10.3390/s23115088

In an empty parking lot, a car ‘thinks’ it is on a real road.

Researchers at The Ohio State University have developed new software to aid in the development, evaluation and demonstration of safer autonomous, or driverless, vehicles.

Called the Vehicle-in-Virtual-Environment (VVE) method, it allows the testing of driverless cars in a perfectly safe environment, said Bilin Aksun-Guvenc, co-author of the study and a professor of mechanical and aerospace engineering at Ohio State.

Imagine a driverless car is placed in the middle of an empty parking lot...

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First direct Visualization of a Zero-field Pair Density Wave

Illustration of the superconducting material Eu-1144
In this illustration of the superconducting material Eu-1144, the blue and magenta wave shown above the crystal lattice represents how the energy level of the electron pairs (yellow spheres) spatially modulates as these electrons move through the crystal.

In the field of superconductivity—the phenomenon in which electrons can flow through a material with essentially zero resistance—the “holy grail” of discovery is a superconductor that can perform under everyday temperatures and pressures. Such a material could revolutionize modern life. But currently, even the “high-temperature” (high-Tc) superconductors that have been discovered must be kept very cold to function—too cold for most applications.

Scientists still have much to learn before room-temperature superconductivity can...

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