Self-adaptive and efficient propulsion of Ray sperms at different viscosities enabled by heterogeneous dual helixes

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

8 Scopus Citations
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Detail(s)

Original languageEnglish
Article numbere2024329118
Journal / PublicationProceedings of the National Academy of Sciences of the United States of America
Volume118
Issue number23
Online published4 Jun 2021
Publication statusPublished - 8 Jun 2021

Abstract

We disclose a peculiar rotational propulsion mechanism of Ray sperms enabled by its unusual heterogeneous dual helixes with a rigid spiral head and a soft tail, named Heterogeneous Dual Helixes (HDH) model for short. Different from the conventional beating propulsion of sperm, the propulsion of Ray sperms is from both the rotational motion of the soft helical tail and the rigid spiral head. Such heterogeneous dual helical propulsion style provides the Ray sperm with high adaptability in viscous solutions along with advantages in linearity, straightness, and bidirectional motion. This HDH model is further corroborated by a miniature swimming robot actuated via a rigid spiral head and a soft tail, which demonstrates similar superiorities over conventional ones in terms of adaptability and efficiency under the same power input. Such findings expand our knowledge on microorganisms’ motion, motivate further studies on natural fertilization, and inspire engineering designs.

Research Area(s)

  • Bidirectional motion, Dual-helical propulsion, Highly environmental adaptability

Citation Format(s)

Self-adaptive and efficient propulsion of Ray sperms at different viscosities enabled by heterogeneous dual helixes. / Wang, Panbing; Al Azad, M. A. R. ; Yang, Xiong et al.
In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 118, No. 23, e2024329118, 08.06.2021.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review