Self-healing
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Finding a scratch on your car is a special kind of heartbreak, but in the future they might be gone before you even notice. Scientists in Korea have developed a coating that self-heals scratches in as little as 30 minutes when exposed to sunlight.
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An experimental new material could help rehabilitate the injured and allow the nonspeaking to "speak," among other potential uses. It's also highly elastic, electrically conductive and self-healing – and it's known as CareGum.
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Although carbon fiber can be repaired and recycled to a certain extent, it's typically just discarded once damaged. According to a recent study, however, a new type of the material can be easily fixed or reused through the simple application of heat.
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Ceramic materials are strong and can stand up to heat very well, but they’re notoriously fragile. Now, researchers at Texas A&M have uncovered a previously unknown self-healing mechanism in a certain type of ceramic, which works at room temperature.
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Soft robots and flexible electronics aren't as protected as their rigid-shelled counterparts, so they're more likely to get ripped or punctured. A new stretchable, self-healing conductive material was designed with this limitation in mind.
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There are now a number of materials designed to give robots or prostheses a sense of touch. And while most of them are thin and skin-like, a new alternative takes the form of a spongey foam – and it combines several desirable qualities.
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We've been hearing a lot lately about micro-robots, that could one day perform tasks such as capturing pollutants from the environment. Scientists have now created a sturdy batch of such bots, that heal back together when cut in two.
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Materials that can heal themselves after becoming damaged have opened up some interesting new possibilities over the past decade or so, and a newly developed example inspired by squid ring teeth is claimed to act faster than most.
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A substance known as calcium phosphate cement is commonly used to repair broken bones, both holding them together and encouraging the growth of new bone tissue. Now, scientists have added carbon fibers to the material to also make it self-healing.
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When a regular material is torn or ruptured, it stays that way unless we tend to it with our hands or a machine to repair the damage. But a new self-healing conductive polymer needs no such help, and can regain full functionality after being severed.
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We've already heard about experimental self-healing concrete, that can repair cracks within itself. Now, scientists have gone a step further, utilizing bacteria to create building materials that can be grown on-site – and that regenerate when broken.
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In a quest for safer lithium-ion batteries, a team of engineers at the University of Illinois have come up with a solid polymer-based electrolyte that can not only heal itself but is recyclable without the need for high temperatures or strong acids.
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