Shiloh R, Remez R, Lu PH, Jin L, Lereah Y, Tavabi AH, Dunin-Borkowski RE, Arie A (2018)
Publication Type: Journal article
Publication year: 2018
Book Volume: 189
Pages Range: 46-53
DOI: 10.1016/j.ultramic.2018.03.016
Nearly eighty years ago, Scherzer showed that rotationally symmetric, charge-free, static electron lenses are limited by an unavoidable, positive spherical aberration. Following a long struggle, a major breakthrough in the spatial resolution of electron microscopes was reached two decades ago by abandoning the first of these conditions, with the successful development of multipole aberration correctors. Here, we use a refractive silicon nitride thin film to tackle the second of Scherzer's constraints and demonstrate an alternative method for correcting spherical aberration in a scanning transmission electron microscope. We reveal features in Si and Cu samples that cannot be resolved in an uncorrected microscope. Our thin film corrector can be implemented as an immediate low cost upgrade to existing electron microscopes without re-engineering of the electron column or complicated operation protocols and can be extended to the correction of additional aberrations.
APA:
Shiloh, R., Remez, R., Lu, P.-H., Jin, L., Lereah, Y., Tavabi, A.H.,... Arie, A. (2018). Spherical aberration correction in a scanning transmission electron microscope using a sculpted thin film. Ultramicroscopy, 189, 46-53. https://doi.org/10.1016/j.ultramic.2018.03.016
MLA:
Shiloh, Roy, et al. "Spherical aberration correction in a scanning transmission electron microscope using a sculpted thin film." Ultramicroscopy 189 (2018): 46-53.
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