Synthesis of ultrafast response smart microgel structures

Vijaya Raghavan Tirumala; Derrick C. Mancini; Gerard T. Caneba

doi:10.1117/12.543401

29 July 2004 Synthesis of ultrafast response smart microgel structures

Vijaya Raghavan Tirumala, Derrick C. Mancini, Gerard T. Caneba

Proceedings Volume 5389, Smart Structures and Materials 2004: Smart Electronics, MEMS, BioMEMS, and Nanotechnology; (2004) https://doi.org/10.1117/12.543401
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

Hydrogels are “smart” polymers that respond to an external stimulus with a change in their physical characteristics. The response of gel microstructures, or microgels, to an external stimulus depends on their size and synthesis route. Smart microgels based on poly (N-isopropylacrylamide) and poly (methacrylic acid) were prepared by combining the aspects of x-ray lithography and a novel synchrotron-radiation-induced polymerization. The morphology of microgels prepared by this novel synthesis route was characterized by optical and atomic force microscopy to better understand their response properties. Microgels obtained from this method are in a hydrophobic state and are richly nanoporous in their morphology. Average pore size of these gel networks lies within a few hundreds of nanometers as observed from atomic force microscopy. Due to their ultrafast response, these microgel structures can be used as microtransducers that respond to a change in moisture concentration.

Citation Download Citation

Vijaya Raghavan Tirumala, Derrick C. Mancini, and Gerard T. Caneba "Synthesis of ultrafast response smart microgel structures", Proc. SPIE 5389, Smart Structures and Materials 2004: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (29 July 2004); https://doi.org/10.1117/12.543401

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