Hydrogel microparticles as dynamically tunable microlenses.

Abstract

Tunable micro-optical elements were prepared by aqueous free-radical polymerization and electrostatic self-assembly techniques. Stimuli-responsive poly(N-isopropylacrylamide-co-acrylic acid) (pNIPAm-AAc) microgels were used as lenses to generate dynamically tunable optical elements. By using optical microscopy to investigate the micrometer-scale dynamics of the self-assembled microlenses, we demonstrate focal length tuning through modulation of the solution pH and/or temperature.

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@article{Kim2004HydrogelMA, title={Hydrogel microparticles as dynamically tunable microlenses.}, author={Jongseong Kim and Michael J. Serpe and L . Andrew Lyon}, journal={Journal of the American Chemical Society}, year={2004}, volume={126 31}, pages={9512-3} }