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The combination of colloid template technology with deposition and spraying techniques leads to the fabrication of highly ordered porous macrostructures. It is shown that 3D structures with variable macropore size can be fabricated. In addition, long-range 2D macroporous semiconductor films (see Figure for a Si film created by laser spraying), which are otherwise difficult to obtain, could be created.
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Luo et al. (2001) studied this question.
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