Electronics & Semiconductors

A new wearable technology—for plants

Plants can't speak up when they are thirsty. And visual signs, such as shriveling or browning leaves, don't start until most of their water is gone. To detect water loss earlier, researchers reporting in ACS Applied Materials ...

Energy & Green Tech

Lithium-ion battery charged to 60% in 5.6 minutes with ordered anode

A team of researchers affiliated with multiple institutions in China has increased the speed of charging a lithium-ion battery by adding a copper coating and nanowires to its anode to improve ordering. Their study is published ...

Energy & Green Tech

Self-standing mesoporous Si film can power lithium-ion batteries

This film electrode does not need carbon additives and binders to connect particles like typical slurry-based electrodes, but it still exhibits excellent battery performance. The success of this electrode design provides ...

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. ...

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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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