Fabrication of nanoscale electrostatic lenses

I. Sinno, A. Sanz-Velasco, S. Kang, Henricus V. Jansen, E. Olsson, P. Enoksson, K. Svensson

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    The fabrication of cylindrical multi-element electrostatic lenses at the nanoscale presents a challenge; they are high-aspect-ratio structures that should be rotationally symmetric, well aligned and freestanding, with smooth edges and flat, clean surfaces. In this paper, we present the fabrication results of a non-conventional process, which uses a combination of focused gallium ion-beam milling and hydrofluoric acid vapor etching. This process makes it possible to fabricate nanoscale electrostatic lenses down to 140 nm in aperture diameter and 4.2 μm in column length, with a superior control of the geometry as compared to conventional lithography-based techniques.
    Original languageUndefined
    Pages (from-to)1-7
    Number of pages7
    JournalJournal of micromechanics and microengineering
    Issue number9
    Publication statusPublished - 27 Aug 2010


    • EWI-18843
    • IR-74922
    • METIS-271141

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