Fabrication of nanoscale electrostatic lenses


Sinno, I. and Sanz-Velasco, A. and Kang, S. and Jansen, H. and Olsson, E. and Enoksson, P. and Svensson, K. (2010) Fabrication of nanoscale electrostatic lenses. Journal of Micromechanics and Microengineering, 20 (9). 095031. ISSN 0960-1317

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Abstract: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.
Item Type:Article
Copyright:© 2010 IOP Publishing
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/74922
Official URL:https://doi.org/10.1088/0960-1317/20/9/095031
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