The Dublin Lens: A Cc=1.0 mm Objective Lens Intended for CryoEM at 100 keV
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arXiv
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| Format: | Preprint |
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2025
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| author | Alves, Germano Motta Andrews, Theo McBean, Patrick Wells, Torquil El-Gomati, Mohamed M. Burkhalter, Stephan Schulze-Briese, Clemens Zambon, Pietro McMullan, Greg Henderson, Richard Russo, Christopher J. Jones, Lewys |
| author_facet | Alves, Germano Motta Andrews, Theo McBean, Patrick Wells, Torquil El-Gomati, Mohamed M. Burkhalter, Stephan Schulze-Briese, Clemens Zambon, Pietro McMullan, Greg Henderson, Richard Russo, Christopher J. Jones, Lewys |
| contents | We have designed, fabricated and tested a lens with chromatic aberration coefficient (Cc) of 1.0 mm, a 4.0 mm pole-gap and 2.0 mm bore that is wide enough to accommodate an anti-contamination system and an objective aperture. This lens extends the temporal-coherence envelope of the electron microscope beyond 2 Angstrom, using a low-cost Schottky FEG. We hope that this lens design can be used to improve all 100 keV electron microscopes designed for single-particle electron cryomicroscopy (cryoEM). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_11458 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Dublin Lens: A Cc=1.0 mm Objective Lens Intended for CryoEM at 100 keV Alves, Germano Motta Andrews, Theo McBean, Patrick Wells, Torquil El-Gomati, Mohamed M. Burkhalter, Stephan Schulze-Briese, Clemens Zambon, Pietro McMullan, Greg Henderson, Richard Russo, Christopher J. Jones, Lewys Instrumentation and Detectors Applied Physics Optics We have designed, fabricated and tested a lens with chromatic aberration coefficient (Cc) of 1.0 mm, a 4.0 mm pole-gap and 2.0 mm bore that is wide enough to accommodate an anti-contamination system and an objective aperture. This lens extends the temporal-coherence envelope of the electron microscope beyond 2 Angstrom, using a low-cost Schottky FEG. We hope that this lens design can be used to improve all 100 keV electron microscopes designed for single-particle electron cryomicroscopy (cryoEM). |
| title | The Dublin Lens: A Cc=1.0 mm Objective Lens Intended for CryoEM at 100 keV |
| topic | Instrumentation and Detectors Applied Physics Optics |
| url | https://arxiv.org/abs/2505.11458 |