Contrast-variation SAXS

General idea of contrast matching core-shell particles in a gradient

Contrast variation is commonly used in SANS to highlight a single segment of a mutli-part structure. In SANS it is easy to do this because a wide range of scattering length densities can be accessed by simple mixing of water and deuterated water. In SAXS this is not so easy. A recent arXiv paper [1] by Raul Garcia-Diez, however, shows one method for getting it done in SAXS. Read more »

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Applications of SAXS: Self-assembled Structures

Martin's Molecule

[Ed: It looks like there is more interest than I thought in the field of SAXS; the “Everything SAXS” review paper has been downloaded over 10000 times!]

One more application we found for small-angle scattering was to research structures molecules assemble in when immersed in liquids. Many of us are familiar with the micellar structures that appear in water-based solutions, but what happens in other solvents? Read more »

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