科学 新闻

In an article published in the Journal of Materials Chemistry C, Brazilian researchers describe a strategy to enhance the efficiency and stability of solar cells made of perovskite, a semiconductor material produced in the laboratory. The results of the project could be highly positive for the future of the solar power sector.

NASA's Lunar Reconnaissance Orbiter confirms Odysseus reached its planned landing site near the moon's south pole.

In 2009, an Air France jet crashed into the ocean, leaving no survivors. The plane's autopilot system shut down and the pilots, having become reliant on their computerized assistant, were unable to correct the situation manually.

Think 127 Hours, but 100 feet below the surface.

Three NASA astronauts and a Russian cosmonaut plan to spend six months aboard the orbital outpost.

AI holds the potential to revolutionize health care, but it also brings with it a significant challenge: bias. For instance, a dermatologist might use an AI-driven system to help identify suspicious moles. But what if the machine learning model was trained primarily on image data from lighter skin tones, and misses a common form of skin cancer on a darker-skinned patient?

Deep learning modeling that incorporates physical knowledge is currently a hot topic, and a number of excellent techniques have emerged. The most well-known one is the physics-informed neural networks (PINNs).

A new approach to waste management could help villages in rural India cut indoor air pollution, improve soil health, and generate clean power, researchers say.

A team from the Naval University of Engineering in Wuhan, China, has created novel algorithms that rectify inertial errors using sparse acoustic signals. This exploration offers a novel method for the issue of underwater navigation, where traditional satellite systems are ineffective due to their signals' inability to penetrate water effectively.

Driving on hydrogen and using it to heat our homes could be a solution to the climate problem. At least, if we start producing it in the right, clean way. Leiden researchers mapped out the global environmental impact of hydrogen production and looked ahead to 2050. They published their work in Energy & Environmental Science.

Microbially induced corrosion (MIC) is a prevalent issue in marine environments, leading to structural damages such as cracking in concrete infrastructure. This corrosion poses a persistent challenge, significantly reducing the lifespan of marine structures and resulting in substantial economic losses.

Researchers at UBC Okanagan are revisiting old building practices—the use of by-products and cast-offs—as a way to improve building materials and the sustainability of the trade.

On a chilly December evening in eastern Idaho, a semi-tractor trailer truck pulls off the desert highway and up to the gate at the Department of Energy's Materials and Fuels Complex.

We’re back on the Moon!

Soft robots inspired by animals can help to tackle real-world problems in efficient and innovative ways. Roboticists have been working to continuously broaden and improve these robots' capabilities, as this could open new avenues for the automation of tasks in various settings.

Every minute of every day, grid operators monitor the ebb and flow of electricity from generators to substations to homes, businesses, schools, hospitals and more. They make sure that the supply of electricity matches the current demand and often must make snap decisions if there's a disruption, such as a storm or equipment failure.

Led by a team from the Institute of Automation, Chinese Academy of Sciences, a new study explores a novel frontier in machine learning. With the rise of large language models, AI is evolving from perceptual intelligence to cognitive intelligence, and human language has become a pivotal component of visual understanding. This study questions whether machines can spontaneously learn a machine language as a visual representation, without relying on human language.

Oxygen-free n-Hexane (HEX), the most stable solvent against Li-metal, was successfully introduced into the standard concentration electrolyte to constitute an electrolyte for temperature-immune lithium-metal batteries.

Solar rays focused on concentrator photovoltaic cells using parabolic mirrors not only supply electricity, but also thermal energy for industrial processes, heating or cooling. Three technological innovations significantly reduce costs.

A research team at Tsinghua University led by Professor Huijuan Liu has developed a new electrochemical system that promises to revolutionize metal recovery from industrial wastewater. The research was published in Engineering.