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Fluorescence micrographs of films of (A) polymer 1, (B) polymer 2, and (C) PMMA imprinted with a silicon master patterned with lines at a 4-μm pitch after exposure to TMR cadaverine (see text). Scale bar = 500 μm (20 μm in inset). To aid in visualization of fluorescence, the brightness and contrast in (B) and (C) have been enhanced (to identical extents for both images).
