Recent progress in phase modulation using nanofabricated electron holograms has demonstrated how the phase of an electron beam can be controlled. In this paper, we apply this concept to the correction of spherical aberration in a scanning transmission electron microscope and demonstrate an improvement in spatial resolution. Such a holographic approach to spherical aberration correction is advantageous for its simplicity and cost-effiectiveness.
Towards a holographic approach to spherical aberration correction in scanning transmission electron microscopy / Grillo, Vincenzo; Tavabi, Amir H.; Yucelen, Emrah; Lu, Peng-Han; Venturi, Federico; Larocque, Hugo; Jin, Lei; Savenko, Aleksei; Gazzadi, Gian Carlo; Balboni, Roberto; Frabboni, Stefano; Tiemeijer, Peter; Dunin-Borkowski, Rafal E.; Karimi, Ebrahim. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 25:18(2017), pp. 21851-21860. [10.1364/OE.25.021851]
Towards a holographic approach to spherical aberration correction in scanning transmission electron microscopy
Grillo, Vincenzo;Venturi, Federico;Gazzadi, Gian Carlo;Frabboni, Stefano;
2017
Abstract
Recent progress in phase modulation using nanofabricated electron holograms has demonstrated how the phase of an electron beam can be controlled. In this paper, we apply this concept to the correction of spherical aberration in a scanning transmission electron microscope and demonstrate an improvement in spatial resolution. Such a holographic approach to spherical aberration correction is advantageous for its simplicity and cost-effiectiveness.
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