Biomedical subjects

Koji Kuramochi

Publications and source records attributed to Koji Kuramochi.

2 recordsLinked to original sources

PubMed2006

Extended dynamical HAADF STEM image simulation using the Bloch-wave method.

An extended method is proposed for the precise simulation of high-angle annular dark-field (HAADF) scanning transmission electron-microscope (STEM) images for materials containing elements with large atomic numbers and for thick specimens. The approach combines a previously reported method utilizing two kinds of optical potential [Watanabe, Yamazaki, Hashimoto & Shiojiri (2001). Phys. Rev. B, 64, 115432] with a representation of a crystal sliced into multiple layers. The validity of the method is demonstrated by simulated images for elements with the diamond structure (Si, Ge and alpha-Sn) and for the perovskite BaTiO3.

Journal Article↗

PubMed2006

Precise measurement of local strain fields with energy-unfiltered convergent-beam electron diffraction.

A simple and robust method to precisely determine local strain fields using energy-unfiltered convergent-beam electron diffraction is presented. This method involves the subtraction of background intensity, the extraction of higher-order Laue-zone lines by tracing using a Radon transformation and a system of analytical strain determination without the need for an optimization routine such as chi2-based minimization. As an example, the measurement of residual strain in a silicon-on-insulator wafer is demonstrated. It is found from micro-Raman spectroscopy analysis that, at the nanometre scale, this measurement succeeds with an accuracy of 0.06%.

Journal Article↗