Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Science. 2009 Nov 27;326(5957):1244-7. doi: 10.1126/science.1178583.

Visualizing the 3D internal structure of calcite single crystals grown in agarose hydrogels.

Author information

  • 1Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA.

Abstract

Single crystals are usually faceted solids with homogeneous chemical compositions. Biogenic and synthetic calcite single crystals, however, have been found to incorporate macromolecules, spurring investigations of how large molecules are distributed within the crystals without substantially disrupting the crystalline lattice. Here, electron tomography reveals how random, three-dimensional networks of agarose nanofibers are incorporated into single crystals of synthetic calcite by allowing both high- and low-energy fiber/crystal interface facets to satisfy network curvatures. These results suggest that physical entrapment of polymer aggregates is a viable mechanism by which macromolecules can become incorporated inside inorganic single crystals. As such, this work has implications for understanding the structure and formation of biominerals as well as toward the development of new high-surface area, single-crystal composite materials.

Comment in

PMID:
19965470
[PubMed - indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk