ArticleProceedings of the National Academy of Sciences of the United States of America2021
Self-adaptive and efficient propulsion of Ray sperms at different viscosities enabled by heterogeneous dual helixes.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 19 citations in OpenAlex.
- Unusual Sperm Morphology in Two Sedentary Songbird Species.Ecology and evolution · 2025Article
- Swimming by Spinning: Spinning-Top Type Rotations Regularize Sperm Swimming Into Persistently Progressive Paths in 3D.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- The ancient and helical architecture of Elasmobranchii's spermatozoa enables progressive motility in viscous environments.PloS one · 2025Article
- One-step formation of polymorphous sperm-like microswimmers by vortex turbulence-assisted microfluidics.Nature communications · 2024Article
- The three-dimensional coarse-graining formulation of interacting elastohydrodynamic filaments and multi-body microhydrodynamics.Journal of the Royal Society, Interface · 2023Article
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Authors and funding
7 authors at 1 institution in 2 countries.
Funding
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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.
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