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Professor of Chemical Engineering at Caltech, Julie is an expert in polymer science, particularly the ways that polymers influence and are influenced by flow. She is known for research on flow-induced crystallization of polymers (e.g., Science 2007) and the effects of flow on polymer self-assembly (e.g., Science 1997). Since Julie joined the Caltech faculty in 1990, she has received the 2017 Bingham Medal of the Society of Rheology, the 1996 Dillon Medal of the American Physical Society, and been elected Fellow of the American Physical Society and the American Association for the Advancement of Science, among other honors. She holds 23 patents and is a co-founder of Calhoun Vision, which is using polymers developed at Caltech to customize patients’ vision by noninvasively optimizing a lens after it is implanted. She hopes that this fundamental research on MegaSupramolecules will open the way to technologies that improve fuel safety, facilitate flow through pipelines and reduce engine emissions.