Home > News > Small defects have large impact
January 19th, 2004
Small defects have large impact
Many materials lose their useful properties as soon as their dimensions fall below a certain limit. This so-called size effect, the sources of which may be quite diverse, can be a road block for the miniaturization of electronic, electromechanic, and electrooptic components. For a particularly promising class of materials, viz. the ferroelectric oxides, researchers from the Max Planck Institute of Microstructure Physics have now identified a new origin of the size effect: Tiny linear defects, with an extension of less than about a tenth of nanometer, are able to deform a tube of material with rectangular cross section of about 4 by 8 nanometer around them. This deformation is so severe that the useful ferroelectric properties of the material are destroyed within the tube.
ORNL microscopy pencils patterns in polymers at the nanoscale December 17th, 2014
Pb islands in a sea of graphene magnetise the material of the future December 16th, 2014
Graphene Applied in Production of Recyclable Electrodes December 13th, 2014
A golden thread through the labyrinth of nanomaterials December 12th, 2014