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The Chemical Application of High‐Resolution Electron Tomography: Bright Field or Dark Field?
Author(s) -
Thomas John Meurig,
Midgley Paul A.,
Yates Timothy J. V.,
Barnard Jonathan S.,
Raja Robert,
Arslan Ilke,
Weyland Matthew
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200461453
Subject(s) - dark field microscopy , nanoporous , field (mathematics) , bimetallic strip , electron , electron tomography , high resolution , resolution (logic) , materials science , optics , computer science , nanotechnology , physics , chemistry , geology , artificial intelligence , remote sensing , catalysis , electron microscope , scanning transmission electron microscopy , microscopy , mathematics , nuclear physics , pure mathematics , biochemistry
Visualizing 3D structures (especially of supported catalysts) by the nondestructive method of electron tomography is best accomplished by high‐angle annular dark‐field (HAADF) rather than by bright‐field (BF) imaging; bimetallic clusters of [Ru 10 Pt 2 ] (diameter ca. 0.4 nm), supported on nanoporous silica, are invisible in BF but readily visible in HAADF images (see pictures).