通俗演講

2020/09/22(Tue)     14:00 -15:00    一樓演講廳1st Floor(auditorium)

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Title

Bio-architectural principles and adaptation of feathers

Speaker

Prof. Wen-Tau Juan

Department of Biomedical Imaging and Radiological Science, China Medical University

Abstract

After the evolution for more than 150 million years since the primitive feather, the hierarchical branching configuration of rachis – barb – barbule has allowed feathers to evolve multiple functions with highly complex morphology. It is important to study the bio-architectural principle of the feather organization, the development and evolution of the feather, and how the diverse feathers can adapt in birds for different flight modes in different eco-spaces. To uncovered the architectural principle of feathers, we have taken a multi-disciplined approach and developed a systemic way to characterize the cellular organization, the keratin distribution, and associated molecular expressions during the feather development. The cross-species investigations show that variation in the integration of the fundamental rachis/vane composite template fosters the production of varied feather architecture to achieve optimization for use in different environments. Combining with the paleontological study of the amber embedded primitive feather 99M years ago, we propose an innovative model to explain the evolution of feather architectures. The naturally selected and time-tested feather configurations may inspire the biomimetic design and fabrication of novel composite materials.