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Light-Induced Temperature Transitions in Biodegradable Polymer and Nanorod Composites


  • This work was supported by a Fellowship in Science and Engineering from the David and Lucille Packard Foundation and NIH grant P41RR001348. We gratefully acknowledge the assistance of Mike Hore for ultramicrotome processing of the composites, Professor Karen Winey for use of her lab's ultramicrotome, and Dr. Lolita Rotkina and Dr. Doug Yates at the Penn Regional Nanotech Facility and Christopher Rodd for assistance in TEM imaging.


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Biodegradable polymer and nanorod (<1% by volume) composites are formulated that heat when exposed to infrared light and undergo shape transitions (see image). The heating is repeatable and tunable based on nanorod concentration and light intensity.