High-resolution dissolution imaging

High-Resolution Dissolution Imaging with Integrated Electrochemical-Atomic... 

High resolution TEM imaging of dislocations which is the principal measurement technique, is difficult below a density of approximately 10 /cm. The low dislocation density for undeformed quartz, 10 /cm, reported by Wegner and Christie (2 , was determined by chemical e hin techniques. In reality, the defect density of many undeformed minerals may be less than 10 /cm. Comparison of the limited data (Table I) with the density required for dislocation-controlled dissolution in the model of Blum and Lasaga (S , implies that dislocation densities in all but the most deformed rocks may not directly control surface reactions. 

The formation of phenolic polymers by Claisen Rearrangement of poly(4-allyloxystyrenes) under acid catalyzed thermolysis conditions has previously been reported in connection with the development high resolution photoresists (14,15). This work was primarily focused on the production of soluble phenolic polymers that could be imaged on the basis of differential dissolution. In this regard, allyloxysty-rene polymers bearing alkyl substituents at the a-position to the ether oxygen atom... 

As stated earlier, photolysis of the DNQ-sulfonate ester PAC in novolac resins increases the solubility and the rate of development of the exposed areas of the latter in the aqueous base solution used for development relative to the unexposed areas (see Figs. 7.5 and 7.6). The difference between the dissolution rate of the unexposed area and the exposed area increases with DNQ loading. Good developer discrimination between the exposed and unexposed areas in this resist system produces high-contrast, high-resolution images (see Section 7.2.1.6). 

Non-invasive imaging may be used to further constrain the role of asperity dissolution in mediating changes in fracture apertures. Imaging gives a reliable estimation of the aperture, and at sufficiently high resolution, may discriminate... 

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