Mother-of-pearl and bone are created by nature and become less sensitive to defects as they grow. Researchers have created biomimetic materials that are resistant to breaking and extremely stretchable.
The interface property for the bone and nacre was not reported because it was difficult to measure.
The atoms of a hard material are separated by layers of glue to form a two-dimensional material. Interfacial properties determine the strength of 2D Composites.
"Because we are using an interfacial material that we can modify by repeating sequence, we are able to fine tune the properties." At the same time, we can make it very strong.
The materials can spread heat in one direction more strongly than at 90 degrees. The results of this work were published in the national academy of sciences
The material would be good for insoles. The repeated flexing of the foot wouldn't break the insoles.
Flexible circuit boards, Wearable devices and other equipment that requires strength and flexibility could be made using these 2D Composites.
Traditional continuum theory does not explain why the materials are strong and flexible. The interface breaks in places when the material is stressed, but the material as a whole doesn't break.
The material doesn't break but the interface does. It is not only compliant, but super stretchy.
Mert Vural, a fellow at Penn State, was one of the people who worked on the project.
Two professors at Nanyang Technological University in Singapore worked on the research.
More information: Bioinspired stretchable molecular composites of 2D-layered materials and tandem repeat proteins, Proceedings of the National Academy of Sciences (2022). DOI: 10.1073/pnas.2120021119. Journal information: Proceedings of the National Academy of Sciences
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