Related Experiment Videos
Progress in quantitative X-ray microanalysis of frozen-hydrated bulk biological samples
1Department of Zoology, La Trobe University, Bundoora (Melbourne), Victoria, Australia.
Journal of Electron Microscopy Technique
|May 1, 1988
Summary
Practical analysis of frozen-hydrated biological samples is now achievable with 2-micron resolution. Careful metal coating prevents electron distortion, enabling quantitative analysis and dry weight determination.
Area of Science:
- Electron microscopy
- Materials science
- Biological sample analysis
Background:
- Advancements in frozen-hydrated biological sample analysis.
- Need for high-resolution techniques in biological research.
Purpose of the Study:
- To assess the practical application and resolution limits of bulk frozen-hydrated sample analysis.
- To identify areas for improvement in the technique.
Main Methods:
- Coating bulk frozen-hydrated samples with conductive metal.
- Utilizing quantitative analytical methods.
- Employing methods for determining dry weight fractions.
Main Results:
- Achieved analytical resolution of approximately 2 microns (depth and lateral).
- Demonstrated that conductive metal coating prevents significant space charge distortion.
- Validated quantitative analysis and dry weight determination methods.
Conclusions:
- Bulk frozen-hydrated sample analysis is practically applicable with current methods.
- Further research into fracturing techniques could enhance sample preparation and analysis.
- Improved fracturing could reduce difficulties in analyzing frozen-hydrated bulk samples.