Abstract
The stimulus-responsive polymers have attracted great attentions, because of their deformation ability under certain stimuli like moisture. In this work, the nanoimprinting technique was introduced to fabricate nanostructures (diffraction gratings and hexagonal dots) on poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA) stimulus-responsive polymer. The imprinted PVA/PAA polymeric structures show a strong and rapid response to moisture stimulations. The swelling or shrinking of the microstructures lead to the corresponding variations of the grating slit width and array trench depth. The grating structure shows potential application for optical detection of external stimulations, and the hexagonaldot array for piezoelectric detection in combination with ferroelectric materials.
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