Engineering

Mechanical engineers develop buttons that rise with light

No wires. No actuators. Shine light on the metal surface, and it rises like a button. KAIST researchers have developed a metal structure that changes shape using light, without any light-absorbing coating. This technology ...

Engineering

3D-printed bridge points the way to greener construction

Concrete is the most widely used building material on Earth, and producing it is one of the largest single sources of carbon emissions. One promising way to reduce its environmental footprint is to 3D-print concrete, laying ...

Robotics

Porous 3D-printed feet cut quadruped robot power use

Quadruped robots, which walk on four legs, are increasingly used for tasks such as inspection, transportation and search-and-rescue operations. However, their repeated leg movements consume far more energy than the rolling ...

Robotics

This robot can snuff out wildfires with a cryogenic spray

About 20 years ago, Yiannis Levendis, a professor of mechanical and industrial engineering at Northeastern University, was working on an experiment to find an alternative to coal—grinding up old car and truck tires and burning ...

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