Physical Review Journal Club: Elastic Hoops Jumping on Water led by Ji-Sung Park of Seoul National University
Tuesday, December 12, 6:30 p.m. ET
This free, one-hour online discussion will feature a presentation from Ji-Sung Park, along with a Q&A session moderated by Physical Review Fluids Editorial Board Member Sarah Hormozi of Cornell University. Come ask questions about the research and change your understanding of jumping on water. Please feel free to share this invitation. | Details:
Physical Review Journal Club: Elastic Hoops Jumping on Water
led by Ji-Sung Park of Seoul National University
Tuesday, December 12, 2023 (6:30 - 7:30 p.m. ET)
A recording of the Zoom meeting will be provided to all registrants.
Presenters:
Ji-Sung Park, Seoul National University
Moderator:
Sarah Hormozi, Cornell University, Physical Review Fluids Editorial Board Member
Summary:
Jumping on water has long been studied in the regime where it is dominated by surface tension. In contrast, our understanding of water jumping when it is governed by drag, as observed in organisms like fishing spiders, remains incomplete despite its potential to achieve high jumping velocity.
Ji-Sung Park (Seoul National University) and colleagues demonstrate that simple elastic hoops can achieve drag-dominated jump on water, and use this model system to construct a fundamental framework to theoretically analyze jump dynamics propelled by form drag. In addition to numerically solving the hoop trajectory while interacting with water, the team revealed that the take-off velocity scaled by the hoop's free vibration velocity depends solely on the solid-fluid density ratio. A comparison with hoop jumps on solid ground reveals that the hoop jumps on water are delayed with a lower jumping efficiency.
This work can not only contribute to the development of efficient and easily constructible biomimetic robots but also provide a foundation for understanding the optimal design principles and evolutionary pressures that shape biological jumpers.
Read ahead in Physical Review Fluids: About the Physical Review Journal Club:
Physical Review Journal Club meetings enable participants to meet leaders in the field of physics, and delve into the latest published research. Each one-hour Journal Club meeting includes a presentation followed by moderated Q&A time with the participating researcher(s). This free, open-to-all webinar series offers a rare opportunity to engage with the authors of key scientific developments in a friendly, "Ask Me Anything" format. | | | |
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