Engineering

New method purifies hydrogen from heavy carbon monoxide mixtures

Refining metals, manufacturing fertilizers and powering fuel cells for heavy vehicles are all processes that require purified hydrogen. But purifying, or separating, that hydrogen from a mix of other gases can be difficult, ...

Robotics

Decoding brain signals to control a robotic arm

Researchers have developed a mind-reading system for decoding neural signals from the brain during arm movement. The method, described in the journal Applied Soft Computing, can be used by a person to control a robotic arm ...

Electronics & Semiconductors

Better memristors for brain-like computing

Scientists are getting better at making neurone-like junctions for computers that mimic the human brain's random information processing, storage and recall. Fei Zhuge of the Chinese Academy of Sciences and colleagues reviewed ...

Engineering

Portable generator powers small safety devices

A new stick-like, water-based device can convert energy from movement into electricity. The technology, which was reported in the journal Science and Technology of Advanced Materials, could be used to power portable devices, ...

Energy & Green Tech

Small change could enable big improvement in batteries

An electric car with a long range, a cell phone that you only need to charge once a week. Not only are we using more and more batteries, but we also want them to be compact, able to store a lot of energy and to charge quickly. ...

Energy & Green Tech

New batteries could share a unique bond with milk and kitchen foil

Since the discovery of electricity, inventors have struggled with how to store it. Batteries emerged relatively quickly as the most common way to preserve energy chemically, but from portability to rechargeability, it has ...

Energy & Green Tech

Engineering next generation solar powered batteries

Secondary batteries, such as lithium ion batteries, need to be recharged once the stored energy is used up. In a bid to decrease our dependence on fossil fuels, scientists have been exploring sustainable ways to recharge ...

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Electrode

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte or a vacuum). The word was coined by the scientist Michael Faraday from the Greek words elektron (meaning amber, from which the word electricity is derived) and hodos, a way.

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