Seminar "Predator-prey interactions mediated by flow sensing" by Prof. Daisuke Takagi


Monday, March 1, 2021 - 15:00


C210 (Level C, Center building)


Micro/Bio/Nanofluidics (Shen) Unit would like to invite you to the seminar by Prof. Daisuke Takagi from University of Hawaii on March 1 (Monday).
Date: Monday, March 1, 2021
Time: 15:00-16:00
Venue: C210 (Level C, Center building) or Zoom

Zoom information:

Meeting URL:

Meeting ID:     934 5944 8847
Passcode:    947268


Prof. Daisuke Takagi
Associate Professor
University of Hawaii at Manoa


Predator-prey interactions mediated by flow sensing


Animals with limited sight and hearing are still capable of escaping from stealthy predators and capturing tiny prey. This talk draws inspiration from the behavior of blind cavefish and copepods to examine the physical process of detecting objects at a distance based on mechanical cues. Simplified models show that animals and potentially robots, equipped with sensory hairs or pressure sensors, can extract useful information from their surroundings, such as the location and size of a distant object. A large object could be detected passively by relying on the fluid flow produced by the object. A small particle suspension may need to be detected actively by sufficiently agitating the surrounding fluid, which is somewhat analogous to echolocation except with flow instead of sound. The findings reveal the counter-intuitive perception of various organisms living in dark and silent environments.


Daisuke Takagi obtained his PhD in 2010 at the Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge, with funding from the Gates Cambridge Scholarship. He completed postdoctoral training at the Courant Institute of Mathematical Sciences at New York University (NYU). In 2013 he joined the University of Hawaii at Manoa, where he is currently Associate Professor of Mathematics, with affiliation to the Department of Mechanical Engineering and the Pacific Biosciences Research Center.


Prof. Amy Shen

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