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Meso-Scale Transmission Electron Microscope Tomography Applied for Wax Distribution in Toner Particles

Published online by Cambridge University Press:  06 August 2013

Mino Yang ,
Jun-Ho Lee ,
Hee-Goo Kim ,
Euna Kim ,
Young-Nam Kwon ,
Jin-Gyu Kim  and
Cheol-Woong Yang
Mino Yang
Affiliation:
Analytical Engineering Group, Samsung Advanced Institute of Technology (SAIT), Youngin, Gyeonggi-do 446-712, Korea School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea
Jun-Ho Lee
Affiliation:
Analytical Engineering Group, Samsung Advanced Institute of Technology (SAIT), Youngin, Gyeonggi-do 446-712, Korea School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea
Hee-Goo Kim
Affiliation:
Analytical Engineering Group, Samsung Advanced Institute of Technology (SAIT), Youngin, Gyeonggi-do 446-712, Korea
Euna Kim
Affiliation:
Analytical Engineering Group, Samsung Advanced Institute of Technology (SAIT), Youngin, Gyeonggi-do 446-712, Korea
Young-Nam Kwon
Affiliation:
Analytical Engineering Group, Samsung Advanced Institute of Technology (SAIT), Youngin, Gyeonggi-do 446-712, Korea
Jin-Gyu Kim
Affiliation:
Division of Electron Microscopic Research, Korea Basic Science Institute (KBSI), Yuseong-gu, Daejeon 305-806, Korea
Cheol-Woong Yang*
Affiliation:
School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea
*
*Corresponding author. E-mail: cwyang@skku.edu
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Abstract

Distribution of wax in laser printer toner was observed using an ultra-high-voltage (UHV) and a medium-voltage transmission electron microscope (TEM). As the radius of the wax spans a hundred to greater than a thousand nanometers, its three-dimensional recognition via TEM requires large depth of focus (DOF) for a volumetric specimen. A tomogram with a series of the captured images would allow the determination of their spatial distribution. In this study, bright-field (BF) images acquired with UHV-TEM at a high tilt angle prevented the construction of the tomogram. Conversely, the Z-contrast images acquired by the medium-voltage TEM produced a successful tomogram. The spatial resolution for both is discussed, illustrating that the image degradation was primarily caused by beam divergence of the Z-contrast image and the combination of DOF and chromatic aberration of the BF image from the UHV-TEM.

Keywords

tonerultra-high-voltage TEMSTEMtomographybright fielddepth of focusZ-contrast
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 58 - 61
Copyright
Copyright © Microscopy Society of America 2013 

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