Crystal orientation analyses of biominerals using Kikuchi patterns in TEM

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概要

• 論文の詳細を見る

• This paper shows that Kikuchi pattern analysis in a transmission electron microscope (TEM) using recent techniques is superior to conventional electron diffraction analysis for determining crystal orientation in an assemblage of small crystals such as those of biogenic origin. A CCD camera with a wide view and large dynamic range was used together with a dedicated program to analyze the patterns and enable real-time and unique determination of crystal orientation. Convergent illumination of the incident beam was effective in enhancing the Kikuchi patterns and in improving spatial resolution. Two example biominerals are characterized by Kikuchi pattern analysis; one is spinel-law twins in several tens of nanometers width magnetite crystals from magnetotactic bacteria. The other is crystal orientation and the alignment of calcite fragments in coccolith.

• 日本鉱物科学会の論文
• 2008-02-01

著者

• KOGURE TOSHIHIRO

  Department of Earth and Planetary Science, The University of Tokyo

• FUKUMORI YOSHIHIRO

  Department of Life Science, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology

• Nagasawa Hiromichi

  Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The U

• Ozaki Noriaki

  Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The U

• SARUWATARI Kazuko

  Department of Earth and Planetary Science, Graduated School of Science, the University of Tokyo

• Nagasawa Hiromichi

  Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo

• Fukumori Yoshihiro

  Department Of Biology Faculty Of Science Osaka University

• Saruwatari Kazuko

  Department Of Earth And Planetary Science Graduate School Of Science The University Of Tokyo

• Ozaki Noriaki

  Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni

• AKAI Junji

  Department of Geology, Faculty of Science, Niigata University

• Akai Junji

  Department Of Geology Faculty Of Science Niigata University

• Akai Junji

  Department Of Geological Science Faculty Of Science Niigata University

• Kogure Toshihiro

  Department Of Earth And Planetary Science Graduate School Of Science The University Of Tokyo

• Akai Junji

  Department Of Earth Sciences Faculty Of Science Niigata University

• Fukumori Yoshihiro

  Department Of Biology Faculty Of Science Kanazawa University

• Fukumori Yoshihiro

  Department Of Life Science Graduate School Of Natural Science Kanazawa University

• Nagasawa Hiromichi

  Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni

• SARUWATARI Kazuko

  Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo

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