Tough coatings have mussel

Aug. 8, 2012
Researchers at the University of Cambridge have successfully biomimicked the natural production of nacre (mother of pearl).

Photo: University of Cambridge biomimicks natural mother of pearl coating found on mollusks.

Researchers at the University of Cambridge have successfully biomimicked the natural production of nacre (mother of pearl), the iridescent coating found on the inside of some mollusks and on the outer coating of pearls. It has both optical iridescence and mechanical toughness.

Nacre consists of an ordered multilayer structure of crystalline calcium carbonate platelets separated by porous organic layers. The crystallized calcium carbonate, which is the primary component of nacre, lets each layer absorb into surfaces, forming layers of well-defined thickness.

To mimic a nacre layer, researchers use a proprietary mixture of ions and organic film. The materials used to make the nacre are relatively cheap which could make for an alternative to costly coating applications for those debating using costly composites.

 More information: http://www.cam.ac.uk/research/news/scientists-create-artificial-mother-of-pearl/

About the Author

Lindsey Frick | Associate Editor

Lindsey has been an Associate Editor for Machine Design since 2012. She holds a Bachelor of Science in mechanical engineering from Cleveland State University. Prior to joining Penton, she worked in product design, packaging, development and strategy, and manufacturing. She covers the materials market and other areas of interest for design engineers such as 3D printing and methods to operate efficiently.

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