11:00 a.m.
via Zoom
For More Information:
Taylor Woehl
tjwoehl@umd.edu
https://chbe.umd.edu/seminar-series
Speaker: Donglee Shin, Assistant Professor, Dept of Chemical Engineering New Mexico Institute of Mining and Technology (New Mexico Tech)
Abstract:
Many plants and animals have unique phases and surface structures that create critical functionalities for their survival. Understanding and mimicking the engineering principles that Nature uses are based on the investigation of the physical and chemical phenomena that arise from a wide range of surfaces and interfaces. Two examples of the lesson from Nature will be discussed in this seminar. Honey bees are well-known to utilize liquid secretions to moisturize and adhere to pollen grains during collection in their pollen baskets. The bees transport the pellets containing many pollen grains each under a wide range of humidity. I will demonstrate how the presence of two immiscible liquid phases in the bioadhesive tempers the effects of water transport under high or low humidity conditions. The compound eyes of the arthropods, such as mosquitos, moth, dragonfly, and fly, shows fascinating multifunctionality. The compound eyes don’t have a focus control system, such as the ciliary muscle of human eyes, but the individual microlens has a nearly infinite depth of field. Furthermore, the antifogging properties attributed to their hierarchical structure and surface chemistry allow them to have a clear vision under the humid environment. The strategy of compound eye fabrication originated in the understanding of interfacial phenomena will be described.
Biography:
Dr. Donglee Shin is an assistant professor in the Department of Chemical engineering at New Mexico Tech. Shin earned a bachelor’s degree in Chemical Engineering from the University of Tennessee in 2011. He graduated from Georgia Tech with a Ph.D. in Chemical Engineering in 2017, followed by working as a postdoctoral researcher at Johns Hopkins University until 2019. He joined New Mexico Tech in 2020.
The ultimate goal of shin’s lab is to accomplish an enhanced understanding of the delicate interplay between the component of the colloid science and interfacial phenomena. Shin aims to comprehend and mimic the engineering principles that many plants and animals use to create critical functionality for their survival. His group develops novel fabrication processes utilizing colloid science and interfacial phenomena to create bioinspired functional materials for application in the areas of adhesion, separation, sensors, wetting, and optics.
This Event is For: Campus
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