Bending-activated biotensegrity structure enables female Megarhyssa to cross the barrier of Euler's critical force

Wen, Rongwei1,2,3; Wang, Zheng4; Yi, Juan4; Hu, Yong1,5

2023-10-20

10.1126/sciadv.adi8284

SCIENCE ADVANCES   影响因子和分区

2375-2548

The parasitic female Megarhyssa has a hair-like ovipositor capable of withstanding a penetration force 10 times greater than Euler's critical force, using a reciprocating penetration method. Understanding and replicating this penetration mechanism may notably broaden the application scenarios of artificial slender elements. Here, we show that the Megarhyssa's stretched intersegmental membrane and precurved abdomen activate the multipart ovipositor as a biotensegrity structure. The ovipositor's first and second valvulae alternately retract and protract, with each retracted valvula forming a tension network to support the other under compression, resulting in an exponentially increased critical force. We validated this mechanism in a multipart flexible microneedle that withstood a penetration force of 2.5x Euler's critical force and in a lightweight industrial robot that achieved intrinsic safety through its ideal dual-stiffness characteristic. This finding could potentially elucidate the high efficiency of insect probes and inspire more efficient and safer engineering designs.

SCI ; EI

英语

NI论文

其他

National Key Research and Development Program of China[2021YFF0501600]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001087790200015

AMER ASSOC ADVANCEMENT SCIENCE

20234715099244

Accidents and Accident Prevention:914.1

Web of Science

1.Univ Hong Kong, Dept Orthopaed & Traumatol, Hong Kong 000000, Peoples R China
2.Univ Hong Kong, Dept Mech Engn, Hong Kong 000000, Peoples R China
3.Univ Hong Kong, Dept Comp Sci, Hong Kong 000000, Peoples R China
4.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
5.Univ Hong Kong, Shenzhen Hosp, Orthoped Ctr, Shenzhen 518048, Peoples R China

Wen, Rongwei,Wang, Zheng,Yi, Juan,et al. Bending-activated biotensegrity structure enables female Megarhyssa to cross the barrier of Euler's critical force[J]. SCIENCE ADVANCES,2023,9(42).

Wen, Rongwei,Wang, Zheng,Yi, Juan,&Hu, Yong.(2023).Bending-activated biotensegrity structure enables female Megarhyssa to cross the barrier of Euler's critical force.SCIENCE ADVANCES,9(42).

Wen, Rongwei,et al."Bending-activated biotensegrity structure enables female Megarhyssa to cross the barrier of Euler's critical force".SCIENCE ADVANCES 9.42(2023).