Schematic illustration (left) and cross-sectional scanning electron microscopy image (right) of bifacial monolithic all-perovskite tandems. Credit: Hongjiang Li, Yurui Wang, Han Gao, Mei Zhang, Renxing Lin, Pu Wu, Ke Xiao, and Hairen Tan Metal halide perovskite solar cells have attracted enormous attention as their power conversion efficiencies (PCEs) continued to...

Buildings consume more energy when empty or partially occupied for extended periods because they are designed to depend on human interactions. Credit: Shutterstock Over the past few decades, the booming global population, growing cities and changing climate have brought global attention to the need to build energy-efficient and sustainable buildings....

Credit: Pixabay/CC0 Public Domain High-end equipment manufacturing has experienced rapid development in recent years, and the alternating current (AC) motor is indispensable. Traditional control strategies on the motor driving system cannot fully meet the requirements such as strict control accuracy, stable torque and multiple objective optimizations. As the third generation...

TQ-230 Permanent Magnet Synchronous Traction Motor and YQ-275 Squirrel-cage Asynchronous Traction Motor. Credit: 維基小霸王/Wikimedia Commons, CC BY-SA Electrical machines consume nearly half of all the electrical power generated worldwide, making them one of the top contributors to carbon dioxide emissions. If we are to develop sustainable societies, we must, therefore,...

A team of researchers, led by Dr. Zhenghua Chen of the Agency for Science, Technology and Research, Singapore, questioned the conventional choice of picking RNNs over CNNs, and proposed a series of new CNNs, which showed results comparable to RNN methods for RUL prediction. Credit: Chinese Association of Automation Modern...

NASA’s X-59, the centerpiece of the agency’s Quesst mission to help enable commercial supersonic travel over land, is seen in this illustration from Lockheed Martin, the company NASA contracted with to design, build, and conduct initial flight tests with the aircraft. First flight is targeted for 2023. Credit: Lockheed Martin...

In concrete element buildings, the average amount of film plastic waste was 0.33 kg per gross square. Credit: Krishna Chauhan For the first time, researchers at Aalto University examined how much film plastic is produced in the construction of apartment blocks. When the amount of waste is known at different...

Flapping-wing robot controlling its attitude using this new principle. It is equipped with an artificial compound eye inspired by insects, which can perceive optical flow at a high frequency. Credit: Christophe De Wagter/TU Delft For proper operation, drones usually use accelerometers to determine the direction of gravity. In a new...

With just a random disturbance that energizes the cubes, they selectively self-assemble into a larger block. Credit: MIT CSAIL While automated manufacturing is ubiquitous today, it was once a nascent field birthed by inventors such as Oliver Evans, who is credited with creating the first fully automated industrial process, in...

Credit: University of Sheffield A project led by Dr. Simon Graham, research associate, EPSRC MAPP—Future Manufacturing Hub, combines field assisted sintering technology (FAST) with hot rolling to convert surplus aluminum alloy powders from atomization into sheet material in two solid-state steps. Metal additive manufacturing (AM) techniques typically operate using powders...