Biomedical subjects

Eriko Takuma

Publications and source records attributed to Eriko Takuma.

2 recordsLinked to original sources

PubMed2003

ARHVTEM of the Pd/ZnO heterointerface chemical structure.

Atomic-resolution high-voltage transmission electron microscopy was applied to the atomic structure analysis of a well-defined Pd/ZnO polar interface, which was produced by internal oxidation. Viewing the ZnO along <1120> axis, each atomic column consists of either oxygen or zinc, so that an individual column was directly identified from the image contrast of the picture taken at the Scherzer defocus condition. The terminating chemical element at the Pd/ZnO interface, which is parallel to [111]Pd and to [0001]ZnO, was shown to be zinc but not oxygen on both sides of the precipitate.

Journal Article↗

PubMed2002

Atomic structure observation of silicon carbide using HRTEM.

Atomic-resolution high-resolution high-voltage transmission electron microscopy was applied to the chemical structure analysis of silicon carbide. Each atomic column was imaged in dark contrast. Silicon and carbon were distinguished from each other in image contrast, i.e. silicon appeared in darker contrast and carbon appeared in lighter contrast. For the projected potential image to provide chemical structure information, it was estimated that the specimen thickness needs to be less than 5 nm. The precise atomic columnar site was determined by using the maximum entropy method.

Journal Article↗