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Discovery of ray sperms' unique swimming motion demonstrated with bio-inspired robot


The bio-inspired robot consists of three parts like the ray sperm: a spiral head made of rigid iron wire, a helical tail made of soft cotton wire, and two motors as the midpiece for the energy supply. Credit: City University of Hong Kong

It is generally agreed that sperm "swim" by beating or rotating their soft tails. However, a research team led by scientists from City University of Hong Kong (CityU) has discovered that ray sperms move by rotating both the tail and the head. The team further investigated the motion pattern and demonstrated it with a robot. Their study has expanded the knowledge on the microorganisms' motion and provided inspiration for robot engineering design.

The research is co-led by Dr. Shen Yajing, Associate Professor from CityU's Department of Biomedical Engineering (BME), and Dr. Shi Jiahai, Assistant Professor of the Department of Biomedical Sciences (BMS). Their findings have been ...


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