Abstract
Nanochannels and nanowires with diameters ranging from 30 to 400 nm were produced byetching ion tracks in thin polyarylate and polycarbonate foils. The shape and the sizedistribution of dry and wet nanochannels, as well as of nanowires grown therein, wereexamined by small-angle x-ray scattering. The x-ray intensity as a function of thescattering vector exhibits pronounced oscillations showing that both the channels and thewires have a highly cylindrical geometry and a very narrow size distribution. UVexposure before chemical etching significantly improves the monodispersity of thenanopores. For fixed etching conditions, the scattering patterns provide evidence thatthe diameter of dry and water-filled channels as well as for embedded nanowiresare identical, demonstrating that the pores in the polymer are completely filled.
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