Engineering news

Engineering

Perovskite solar cells achieve over 25% efficiency and long lifespan simultaneously

A KAIST research team has solved the "solar cell dilemma," in which increasing efficiency shortens lifespan, while extending lifespan lowers efficiency. The team developed a technology to precisely control the internal structure ...

Robotics

Alive or not? Tiny 3D-printed robots that swim and navigate just like animals

Leiden researchers Professor Daniela Kraft and Mengshi Wei have created microscopic robots that move without sensors, software, or external control. Instead, their behavior emerges entirely from their shape and the way they ...

Robotics

Bat-inspired ultrasound helps palm-sized drones navigate fog and smoke

A team led by Worcester Polytechnic Institute (WPI) researcher Nitin J. Sanket has shown that ultrasound sensors and a form of artificial intelligence (AI) can enable palm-sized aerial robots to navigate with limited power ...

Engineering

Efficient carbon capture 'viciazite' materials can desorb below 60°C

Capturing carbon dioxide (CO2) before it reaches the atmosphere is a key strategy for reducing greenhouse gas emissions. Even though carbon capture technologies have existed for decades, their widespread adoption has been ...

Engineering

Smart yarn tracks muscle activity in the body

Created from noise-resistant, conductive threads, a high-tech new smart fabric could find uses in health monitoring, sports performance and rehabilitation. The work is published in the journal Science Advances.

Engineering

Strengthening wood with needle and thread

Wood laminates are used in many different ways, for example, in the manufacture of skis and snowboards or in components for vehicle interiors. However, their weight advantages for lightweight construction also have disadvantages. ...

Engineering

What 100,000 simulations reveal about the US power grid

On August 13, 2003, a single transmission line near Cleveland, Ohio, sags into an overgrown tree limb and short circuits. Within minutes, nearby lines overload and trip one after another, triggering cascading failures across ...

Engineering

Why solid-state batteries keep short-circuiting

Batteries that use solid metal as their charge-carrying electrolyte could potentially be a safer and far more energy-dense alternative to lithium-ion batteries. Unfortunately, these solid-state batteries have been plagued ...

Engineering

Harvesting heat and electricity from the sun, when you need it

Solar energy is abundant and frustratingly ill-timed. A sunbeam can become either electricity (useful for running modern life) or heat (useful for keeping spaces warm). But conventional solar hardware is single-minded: Photovoltaic ...

Engineering

Mach 1.5 tests reveal noise feedback loops from supersonic jets

Researchers from the FAMU-FSU College of Engineering and the Florida Center for Advanced Aero-Propulsion, or FCAAP, are helping to solve a safety challenge in military aviation: the extreme noise generated by supersonic jets ...

Engineering

New bifacial solar cells yield efficiencies above 32%

Solar cells, devices that can convert sunlight into electricity, are now widely used in many countries worldwide. Over the past few years, energy engineers have been exploring alternative designs that could further boost ...

Engineering

3D printing platform rapidly produces complex electric machines

A broken motor in an automated machine can bring production on a busy factory floor to a halt. If engineers can't find a replacement part, they may have to order one from a distributor hundreds of miles away, leading to costly ...

Engineering

The giant fire tornado that could save our oceans

In the frantic hours following an offshore oil spill, emergency responders face a destructive decision: let the oil spread or ignite it. Once ignited, it creates an "in-situ" fire pool that stops the oil from spreading and ...