presentation (pdf)
presentation (pdf) presentation (pdf)
Advantages of FIB • Previous techniques for TEM foil preparation destructive: – (e.g. microtome, Ar ion milling) • FIB allows site specific cross sectional slices to be prepared, through the critical zone • Direct observation of layers?
Materials • Naturally weathered alkali feldspars from post-glacial soils • Shap (north-west England) – Acidic (pH 3.4) & waterlogged peat. Grain surfaces free of weathering products. • Glen Feshie (Cairngorm, Scotland) – Soil chronosequence (80 yr-1 kyr). Grain surfaces have abundant weathering products.
- Page 1 and 2: Nanoscale characterization of the
- Page 3 and 4: Models for feldspar weathering
- Page 5: Models are difficult to test: • R
- Page 9 and 10: Beam Damage • Sample can be damag
- Page 11 and 12: • Can Au coating (by sputtering)
- Page 13 and 14: Shap alkali feldspars: microtopogra
- Page 15 and 16: Shap alkali feldspars: etch pit net
- Page 17 and 18: Shap alkali feldspars: microstructu
- Page 19 and 20: Glen Feshie feldspars: weathering p
- Page 21 and 22: Glen Feshie (1.1 kyr): reconstructi
- Page 23 and 24: Conclusions • Shap weathers by st
- Page 25: TEM layers: a cautionary tale • P
Advantages of FIB<br />
• Previous techniques for TEM foil preparation destructive:<br />
– (e.g. microtome, Ar ion milling)<br />
• FIB allows site specific cross sectional slices to be<br />
prepared, through the critical zone<br />
• Direct observation of layers?
Change language