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Topological localisation of defects at atomic scaleJernot, Jean-Paul ...The problem addressed in this paper is the detection of defects on atomic structures. The procedure proposed is in two steps. At first a tessellation isbuilt starting from the atoms. It consists of a ... partition of the space into cells, and is used to define the neighbourhood relationships between the atoms. Then, the local contribution to a topological parameter, namely the Euler-Poincare characteristic, is defined and measured for each cell. Within aregular tessellation, made of identical cells, this local contribution is equal to zero. Any local deviation from regularity corresponds to a tessellation containing cells with non-zero contributions. This allows us to locate the defects from a topological criterion and opens the way to a fully automatic detection of interfaces at atomic scale. The procedure is applied in2D space for the detection of edge dislocations, grain boundaries and twins from HREM models and images. A 3D example is also given to illustrate its generality.Vir: Image analysis & stereology : official journal of the International Society for Stereology. - ISSN 1580-3139 (Vol. 21, no. 3, nov. 2002, str. 191-198)Vrsta gradiva - članek, sestavni delLeto - 2002Jezik - angleškiCOBISS.SI-ID - 16034009
Avtor
Jernot, Jean-Paul |
Jouannot-Chesney, Patricia |
Lantuéjoul, Christian |
Nouet, Gérard |
Ruterana, Pierre
Teme
Crystallography |
Particle Size |
Image Processing, Computer-Assisted |
Delec, velikost |
Kristalografija |
Slika, obdelava z računalnikom |
kristalografija |
defekti |
topologija |
kristalna struktura
vir: Image analysis & stereology : official journal of the International Society for Stereology. - ISSN 1580-3139 (Vol. 21, no. 3, nov. 2002, str. 191-198)
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Jernot, Jean-Paul | |
Jouannot-Chesney, Patricia | |
Lantuéjoul, Christian | |
Nouet, Gérard | |
Ruterana, Pierre |
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