Self-assembly of amorphous calcium carbonate microlens arrays

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2012
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Lee, Kyubock
Wagermaier, Wolfgang
Masic, Admir
Kommareddy, Krishna
Bennet, Mathieu
Manjubala, Inderchand
Lee, Seung-Woo
Park, Seung
Fratzl, Peter
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Nature Communications. 2012, 3, 725. eISSN 2041-1723. Available under: doi: 10.1038/ncomms1720
Zusammenfassung

Biological materials are often based on simple constituents and grown by the principle of self-assembly under ambient conditions. In particular, biomineralization approaches exploit efficient pathways of inorganic material synthesis. There is still a large gap between the complexity of natural systems and the practical utilization of bioinspired formation mechanisms. Here we describe a simple self-assembly route leading to a CaCO3 microlens array, somewhat reminiscent of the brittlestars’ microlenses, with uniform size and focal length, by using a minimum number of components and equipment at ambient conditions. The formation mechanism of the amorphous CaCO3 microlens arrays was elucidated by confocal Raman spectroscopic imaging to be a two-step growth process mediated by the organic surfactant. CaCO3 microlens arrays are easy to fabricate, biocompatible and functional in amorphous or more stable crystalline forms. This shows that advanced optical materials can be generated by a simple mineral precipitation.

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ISO 690LEE, Kyubock, Wolfgang WAGERMAIER, Admir MASIC, Krishna KOMMAREDDY, Mathieu BENNET, Inderchand MANJUBALA, Seung-Woo LEE, Seung PARK, Helmut CÖLFEN, Peter FRATZL, 2012. Self-assembly of amorphous calcium carbonate microlens arrays. In: Nature Communications. 2012, 3, 725. eISSN 2041-1723. Available under: doi: 10.1038/ncomms1720
BibTex
@article{Lee2012Selfa-18804,
  year={2012},
  doi={10.1038/ncomms1720},
  title={Self-assembly of amorphous calcium carbonate microlens arrays},
  volume={3},
  journal={Nature Communications},
  author={Lee, Kyubock and Wagermaier, Wolfgang and Masic, Admir and Kommareddy, Krishna and Bennet, Mathieu and Manjubala, Inderchand and Lee, Seung-Woo and Park, Seung and Cölfen, Helmut and Fratzl, Peter},
  note={Article Number: 725}
}
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