Thin stimuli-responsive hydrogel films with different film thicknesses have been successfully prepared on solid supports by spin-coating technology. The film thickness is varied from 1 to 240 nm. The film structure was measured with optical microscopy, atomic force microscopy, X-ray reflectivity and grazing incident small angle X-ray scattering (GISAXS). The static swelling and switching behavior in water vapour was investigated with an optical interferometry and neutron reflectivity. The combination of microfluidic devices and hydrogel thin films is successfully performed and investigated by in-situ GISAXS. Finally, a correlation length of a thin film approaching the transition temperature is probed by grazing incident small angle neutron scattering.
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Thin stimuli-responsive hydrogel films with different film thicknesses have been successfully prepared on solid supports by spin-coating technology. The film thickness is varied from 1 to 240 nm. The film structure was measured with optical microscopy, atomic force microscopy, X-ray reflectivity and grazing incident small angle X-ray scattering (GISAXS). The static swelling and switching behavior in water vapour was investigated with an optical interferometry and neutron reflectivity. The combi...
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