Engineering

Bionic jellyfish swim faster and more efficiently

Engineers at Caltech and Stanford University have developed a tiny prosthetic that enables jellyfish to swim faster and more efficiently than they normally do, without stressing the animals. The researchers behind the project ...

Robotics

Researchers make robots from self-folding kirigami materials

Researchers have demonstrated how kirigami-inspired techniques allow them to design thin sheets of material that automatically reconfigure into new two-dimensional (2-D) shapes and three-dimensional (3-D) structures in response ...

Engineering

'Epidermal VR' gives technology a human touch

Imagine holding hands with a loved one on the other side of the world. Or feeling a pat on the back from a teammate in the online game "Fortnite."

Robotics

Micromotors push around single cells and particles

A new type of micromotor—powered by ultrasound and steered by magnets—can move around individual cells and microscopic particles in crowded environments without damaging them. The technology could open up new possibilities ...

Robotics

These new soft actuators could make soft robots less bulky

Engineers at the University of California San Diego have developed a way to build soft robots that are compact, portable and multifunctional. The advance was made possible by creating soft, tubular actuators whose movements ...

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Engine

An engine is a mechanical device that produces some form of output from a given input. An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from other forms of energy (such as electricity, a flow of hydraulic fluid or compressed air). A motor car (automobile) has a starter motor and motors to drive pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).

Military engines included siege engines, large catapults, trebuchets and battering rams.

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