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Three-Dimensional Characterization of Iron Oxide (α-Fe2O3) Nanoparticles: Application of a Compressed Sensing Inspired Reconstruction Algorithm to Electron Tomography

Published online by Cambridge University Press:  05 December 2012

Niven Monsegue ,
Xin Jin ,
Takuya Echigo ,
Ge Wang  and
Mitsuhiro Murayama
Niven Monsegue*
Affiliation:
Institute for Critical Technology and Applied Science, Virginia Tech, Blacksburg, VA 24061, USA
Xin Jin
Affiliation:
School of Biomedical Engineering & Sciences, Virginia Tech, Blacksburg, VA 24061, USA Department of Engineering Physics, Tsinghua University, Beijing 100084, China
Takuya Echigo
Affiliation:
Center for NanoBioEarth, Department of Geosciences, Virginia Tech, Blacksburg, VA 24061, USA Japan International Research Center for Agricultural Sciences, Ohwashi 1-1, Tsukuba 305-8686, Ibaraki, Japan
Ge Wang
Affiliation:
School of Biomedical Engineering & Sciences, Virginia Tech, Blacksburg, VA 24061, USA
Mitsuhiro Murayama
Affiliation:
Institute for Critical Technology and Applied Science, Virginia Tech, Blacksburg, VA 24061, USA Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, USA
*
*Corresponding author. E-mail: [email protected]
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Abstract

In this article, we demonstrate the application of a new compressed sensing three-dimensional reconstruction algorithm for electron tomography that increases the accuracy of morphological characterization of nanostructured materials such as nanocrystalline iron oxide particles. A powerful feature of the algorithm is an anisotropic total variation norm for the L1 minimization during algebraic reconstruction that effectively reduces the elongation artifacts caused by limited angle sampling during electron tomography. The algorithm provides faithful morphologies that have not been feasible with existing techniques.

Keywords

computed tomographySTEMcompressed sensing3D reconstructionquantification
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 18 , Issue 6 , December 2012 , pp. 1362 - 1367
Copyright
Copyright © Microscopy Society of America 2012

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Footnotes

†

Present address: Functional Geomaterials Group, Environmental Remediation Materials Unit, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan

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