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Advanced Materials

Colloidal Hydrogel Microlenses


  • LAL acknowledges financial support from a Sloan Fellowship and a Camille Dreyfus Teacher-Scholar Award.


The creation of microlenses from hydrogel microparticles is demonstrated. The fabrication of substrate-supported microgels is performed using electrostatic interactions between aminopropyltrimethoxysilane-functionalized glass substrates and acrylic acid groups present on the microgel surface. The lensing ability is illustrated by imaging a photomask through each of the microgels present on the surface (see Figure).

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