Academic Journal
Fabrication and characterization of low aberration micrometer-sized electron lenses
| العنوان: | Fabrication and characterization of low aberration micrometer-sized electron lenses |
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| المؤلفون: | Steinwand, E, Longchamp, J N, Fink, H W |
| المصدر: | Steinwand, E; Longchamp, J N; Fink, H W (2010). Fabrication and characterization of low aberration micrometer-sized electron lenses. Ultramicroscopy, 110(9):1148-1153. |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2010 |
| المجموعة: | University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
| مصطلحات موضوعية: | Physics Institute, 530 Physics |
| الوصف: | Intrinsic spherical aberrations of electron lenses have been the major resolution limiting factor in electron microscopes for several decades. While effective correctors have recently been implemented, an alternative to correct these aberrations is to circumvent them by scaling down lens dimensions by several orders of magnitude. We have fabricated electrostatic lenses exhibiting one micrometer diameter apertures and evaluated their beam forming properties against predictions from numerical ray tracing simulations. It turns out that it is routinely possible to shape a paraxial low-energy electron beam by such micron-sized lenses. Beam profiles have been measured both at a distant detector as well as in a plane close to the lens. It is shown that the lens can form a parallel beam extending no more than 800 nm from the optical axes at a distance of 200 microm beyond the lens exit. We believe that these findings constitute a prerequisite to derive novel tools for high resolution microscopy using low-energy electrons. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0304-3991 |
| Relation: | https://www.zora.uzh.ch/id/eprint/44523/13/Acc-MS_Steinwand.pdf; info:pmid/20462698; urn:issn:0304-3991 |
| DOI: | 10.1016/j.ultramic.2010.04.013 |
| الاتاحة: | https://www.zora.uzh.ch/id/eprint/44523/ https://doi.org/10.1016/j.ultramic.2010.04.013 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.3395EEFC |
| قاعدة البيانات: | BASE |
| تدمد: | 03043991 |
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| DOI: | 10.1016/j.ultramic.2010.04.013 |