Abstract
Contrast variation of SANS by immersion in liquids has been shown to be a powerful tool to identify the scattering contributions in nanostructured amorphous Si Au samples. The fractal nature of the internal surface ( D s = 2.63) between a channel system of open pores and the amorphous material has been verified, as well as the microstructural concept of dense nanosized amorphous particles embedded in a less dense “matrix” formed by grain boundaries and free volumes. Using C 6D 12, CS 2 and D 2O, a molecular-size effect of different access to smaller pores was observed.
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