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Artificial mother of pearl

08.08.2012

For the first time, scientists from the University of Cambridge have succeeded in replicating a natural process and synthesizing mother-of-pearl: the durable iridescent coating found on the inside of some mollusk shells and covering precious pearls.

By repeating biological processes, scientists for the first time were able to create artificial mother-of-pearl, which has a similar structure, mechanical and optical properties of natural material.

In order to create artificial mother-of-pearl, scientists used a three-step process. First, scientists prevented crystallization by precipitation from a solution of calcium carbonate, which is the main component of mother-of-pearl. This was achieved by using a mixture of ions and organic components in a solution that mimics the corresponding substance produced by the mollusk. As a result, it was possible to achieve uniform deposition of calcium carbonate on the surface. Further, the deposited layer of thickness was covered with a layer of organic matter with pores 10 nanometers in diameter. Finally, the crystallization process was carried out. Thus, with the help of alternating alternation of crystalline and organic layers, it was possible to create artificial mother-of-pearl.

As noted by one of the authors of the study, Alex Finnemore (Alex Finnemore), many modern composite materials are superior to mother-of-pearl in a combination of characteristics. However, mother-of-pearl coating can be used both for decorative purposes, for example in jewelry, and in industry - for the development of new processes for applying the most durable coatings. Moreover, the process of creating such coatings is very simple and can be easily automated.

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The analysis distinguishes between the surrogate and the original with XNUMX% accuracy.

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