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    Hettler, S Dries, M Zeelen, J Oster, M Schröder, R R and Gerthsen, D 2016. High-resolution transmission electron microscopy with an electrostatic Zach phase plate. New Journal of Physics, Vol. 18, Issue. 5, p. 053005.

    Hettler, Simon Wagner, Jochen Dries, Manuel Oster, Marco Wacker, Christian Schröder, Rasmus R. and Gerthsen, Dagmar 2015. On the role of inelastic scattering in phase-plate transmission electron microscopy. Ultramicroscopy, Vol. 155, p. 27.

    Glaeser, Robert M. 2013. Invited Review Article: Methods for imaging weak-phase objects in electron microscopy. Review of Scientific Instruments, Vol. 84, Issue. 11, p. 111101.

    Glaeser, Robert M. Sassolini, Simone Cambie, Rossana Jin, Jian Cabrini, Stefano Schmid, Andreas K. Danev, Radostin Buijsse, Bart Csencsits, Roseann Downing, Kenneth H. Larson, David M. Typke, Dieter and Han, B.G. 2013. Minimizing electrostatic charging of an aperture used to produce in-focus phase contrast in the TEM. Ultramicroscopy, Vol. 135, p. 6.

    Marko, Michael Meng, Xing Hsieh, Chyongere Roussie, James and Striemer, Christopher 2013. Methods for testing Zernike phase plates and a report on silicon-based phase plates with reduced charging and improved ageing characteristics. Journal of Structural Biology, Vol. 184, Issue. 2, p. 237.


Improving Fabrication and Application of Zach Phase Plates for Phase-Contrast Transmission Electron Microscopy

  • Simon Hettler (a1), Björn Gamm (a1), Manuel Dries (a1), Nicole Frindt (a2), Rasmus R. Schröder (a2) and Dagmar Gerthsen (a1)
  • DOI:
  • Published online: 12 October 2012

Zach phase plates (PPs) are promising devices to enhance phase contrast in transmission electron microscopy. The Zach PP shifts the phase of the zero-order beam by a strongly localized inhomogeneous electrostatic potential in the back focal plane of the objective lens. We present substantial improvements of the Zach PP, which overcome previous limitations. The implementation of a microstructured heating device significantly reduces contamination and charging of the PP structure and extends its lifetime. An improved production process allows fabricating PPs with reduced dimensions resulting in lower cut-on frequencies as revealed by simulations of the electrostatic potential. Phase contrast with inversion of PbSe nanoparticles is demonstrated in a standard transmission electron microscope with LaB6 cathode by applying different voltages.

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Microscopy and Microanalysis
  • ISSN: 1431-9276
  • EISSN: 1435-8115
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