Scientists accidentally discover metals that mend themselves without human intervention
The concept of self-healing metals—bridges, spaceships or robots that can spontaneously repair themselves—may be a bit closer to reality. For the first time, scientists have observed solid metal mending its own cracks without human intervention, defying fundamental theories of materials science.
Michael Demkowicz, a materials scientist at Texas A&M University and co-author of the new study, recently published in Nature, first theorized about self-healing metals 10 years ago when his computer simulations showed that solid metals could “weld” shut small cracks on their own. Because metal typically requires high temperatures to shift its form, many scientists believed the simulations were flawed, Demkowicz says.
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