According to foreign media New Atlas, some natural organisms such as coral reefs have amazing adaptability, can adapt to different degrees of pressure, and use nearby minerals for structural reinforcement when needed. Scientists at Johns Hopkins University successfully replicated this adaptive mineralization process in the laboratory, demonstrating a new type of material that can change its hardness when more force is applied.
The human bone is an example of a natural material that can regulate its own structure. It uses cell signals to add minerals from the surrounding blood. Coral reefs can also function in a similar manner, adding minerals in areas where they may be subject to the greatest ocean power as a means of survival.
Researchers at Johns Hopkins University set out to develop a material that could work in a similar way, introducing additional minerals as a response to additional stress. This starts with a polymer film that can convert mechanical force into electric charge. This film can convert mechanical force into electric charge, and the electric charge is proportional to the pressure they bear. These films are then placed in a liquid that mimics the plasma ion concentration. Their idea is that the changed charge can be used as a signal, just like bones are used to summon reinforcements, so that minerals form on the surface.
The researchers fixed a beam of light aimed at increasing the stress level at one end of the material surface. As a result, the more stressed part of the material accumulates more minerals on the surface area, and the height of the minerals is proportional to the applied stress.
"Our findings can pave the way for a new class of self-regenerating materials that can self-repair damaged areas," said the study's senior author Sung Hoon Kang.
By changing the composition of the ionic liquid, the researchers also found that they can control the type of minerals formed on the material, which may give it greater versatility. The team imagined various uses for this material, including resins used as scaffolds to promote bone disease treatment or dental care. Sung Hoon Kang said: "Imagine a self-reinforcing bone graft or dental bridge where high force is applied without inspection and maintenance. It will make the implant and dental bridge safer and complication , Costs, etc. are minimal. "
The research was published in the journal Advanced Materials.
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