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Nanoscale LEGO Construction Inspired by Biominerals - Nanocrystal engineering learned from biominerals holds promises for the development in biology, chemistry, and materials science
Nanoscale LEGO Construction Inspired by Biominerals

 

NewswireToday - /newswire/ - Honolulu, Hawaii, United States, 2006/09/06 - Nanocrystal engineering learned from biominerals holds promises for the development in biology, chemistry, and materials science.

   
 
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Biominerals have inspired novel bottom-up approaches to the development of functional materials for some time now. The morphology, crystallographic orientation, incorporated organic molecules, and emergent properties of carbonate-based biominerals already have been demonstrated. Typical examples of these biominerals are certain layers of seashells, corals, and eggshells. New research now clarifies that biominerals are oriented architectures of calcium carbonate nanocrystals 20–100 nm in size with incorporation of biopolymers.

These calcium carbonate superstructures give rise to questions such as, Why do various curved morphologies emerge from the same combination of calcium carbonate and biopolymers? How do living organisms build up inorganic materials with characteristic macroscopic morphologies from their precursors? Why are many bioinorganic architectures colored with dye molecules?

The nanoscopic structure of biominerals, especially in terms of the growth and orientation of the crystals, was not fully understood until recent years, while the macroscopic morphology, crystal structure, and the included organic molecules were well investigated. Recently, the oriented architectures of nanoparticles have featured by a research group at the Max Planck Institute of Colloids and Interfaces in Potsdam/Germany ("Oriented attachment and mesocrystals: Non-classical crystallization mechanisms based on nanoparticle assembly").

In earlier work, low-magnification images showed the smooth crystal surface of biominerals as a single crystal. Now, working with selected-area electron diffraction (SAED) and X-ray diffraction (XRD) researchers found that oriented architectures of nanocrystals formed in various biominerals, at least within a certain area that is several hundred nanometers in scale, regardless of the species and crystal phases.

Dr. Yuya Oaki, first author, and Prof. Hiroaki Imai from the Department of Applied Chemistry at Keio University in Japan, published a recent paper on nanoscale architectures in biominerals and their biomimetics that will lead to the improved understanding of biomineralization and the further development of materials science. The paper, titled "Bridged Nanocrystals in Biominerals and Their Biomimetics: Classical Yet Modern Crystal Growth on the Nanoscale" appeared in the July 3, 2006 online edition of Advanced Functional Materials.

Read the full article on the Nanowerk website.

About Nanowerk
Nanowerk is a leading nanotechnology information portal. Apart from its unique Nanomaterial Database™, with over 1,300 products from 90 suppliers, it provides the most complete nanotech events calendar; hundreds of links to universities, labs, researchers, associations, networks and international initiatives involved in nanotechnology; daily news; downloadable reports; and much more. The site includes a daily “Spotlight” section featuring Nanowerk-exclusive reviews and summaries of cutting-edge nanotechnology research by guest authors and Nanowerk editors. Nanowerk also publishes the nanoRISK newsletter – a constructive contribution to the debate about the potential risks of nanotechnology.

By Michael Berger, Copyright 2006 Nanowerk LLC.

LEGO® are trademarks of the LEGO Group.

 
 
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Nanoscale LEGO Construction Inspired by Biominerals

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