Abstract
SummaryThe feasibility of using a focused ion beam (FIB) for the purpose of thinning vitreously frozen biological specimens for transmission electron microscopy (TEM) was explored. A concern was whether heat transfer beyond the direct ion interaction layer might devitrify the ice. To test this possibility, we milled vitreously frozen water on a standard TEM grid with a 30‐keV Ga+ beam, and cryo‐transferred the grid to a TEM for examination. Following FIB milling of the vitreous ice from a thickness of approximately 1200 nm to 200–150 nm, changes characteristic of heat‐induced devitrification were not observed by TEM, in either images or diffraction patterns. Although numerous technical challenges remain, it is anticipated that ‘cryo‐FIB thinning’ of bulk frozen‐hydratred material will be capable of producing specimens for TEM cryo‐tomography with much greater efficiency than cryo‐ultramicrotomy, and without the specimen distortions and handling difficulties of the latter.
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Dates
Type | When |
---|---|
Created | 19 years, 2 months ago (May 22, 2006, 11:47 a.m.) |
Deposited | 1 year, 10 months ago (Oct. 14, 2023, 10:25 p.m.) |
Indexed | 12 hours, 9 minutes ago (Aug. 20, 2025, 9:17 a.m.) |
Issued | 19 years, 4 months ago (April 1, 2006) |
Published | 19 years, 4 months ago (April 1, 2006) |
Published Online | 19 years, 2 months ago (May 22, 2006) |
Published Print | 19 years, 4 months ago (April 1, 2006) |
@article{MARKO_2006, title={Focused ion beam milling of vitreous water: prospects for an alternative to cryo‐ultramicrotomy of frozen‐hydrated biological samples}, volume={222}, ISSN={1365-2818}, url={http://dx.doi.org/10.1111/j.1365-2818.2006.01567.x}, DOI={10.1111/j.1365-2818.2006.01567.x}, number={1}, journal={Journal of Microscopy}, publisher={Wiley}, author={MARKO, M. and HSIEH, C. and MOBERLYCHAN, W. and MANNELLA, C. A. and FRANK, J.}, year={2006}, month=apr, pages={42–47} }