Direct Determination of Local Lattice Polarity in Crystals
With current advances in sub-angstrom resolution scanning transmission electron microscopy (STEM), it is now possible to image directly local crystal structures of materials where dramatically different atoms are separated from each other at distances about or less than 1 angstrom. We achieved direc...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2006-06, Vol.312 (5778), p.1354-1354 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | Mkhoyan, K.A Batson, P.E Cha, J Schaff, W.J Silcox, J |
| description | With current advances in sub-angstrom resolution scanning transmission electron microscopy (STEM), it is now possible to image directly local crystal structures of materials where dramatically different atoms are separated from each other at distances about or less than 1 angstrom. We achieved direct imaging of atomic columns of nitrogen in close proximity to columns of aluminum in wurtzite aluminum nitride by using annular dark field imaging in an aberration-corrected STEM. This ability allows direct determination of the local polarity in nanoscale crystals and crystal defects. |
| doi_str_mv | 10.1126/science.1124511 |
| format | Article |
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| source | American Association for the Advancement of Science; JSTOR |
| subjects | Atoms Atoms & subatomic particles Brevia Condensed matter: structure, mechanical and thermal properties Crystal lattices Crystal structure Crystals Electron microscopes Exact sciences and technology Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Nanotechnology Physics Quantum wells Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Technological change Wurtzite |
| title | Direct Determination of Local Lattice Polarity in Crystals |
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