首页|Research on Material and Morphological Structure of Venus Flytrap Trigger Hair

Research on Material and Morphological Structure of Venus Flytrap Trigger Hair

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Venus flytrap can sense the very small insects that touch its tactile receptors,known as trigger hairs,and thus capture prey to maintain its nutrient demand.However,there are few studies on the trigger hair and its morphological structure and material properties are not fully understood.In this study,the trigger hair is systematically characterized with the help of different instruments.Results show that trigger hair is a special cantilever beam structure and it has a large longitudinal diameter ratio.Besides,it is composed of a hair lever and a basal podium,and there is a notch near the hair base.The cross-section of the trigger hair is approximately a honeycomb structure,which is composed of many holes.Methods to measure mechanical properties of trigger hair are introduced in this paper.Based on the mechanical tests,trigger hair proved to be a variable stiffness structure and shows a high sensitivity to the external force.These features can provide supports for the understanding of the high-sensitivity sensing mechanism of trigger hairs from the perspective of structure and material,and offer inspirations for the development of high-performance tactile sensors.

Venus flytrapMorphological structureMechanical propertiesTrigger hairBioinspiration

Qian Wang、Kun Xu、Cheng Fan、Lining Sun、Lei Zhang、Kejun Wang

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Jiangsu Provincial Key Laboratory of Advanced Robotics,Soochow University,Suzhou 215021,China

Key Laboratory for Bionic Engineering (Ministry of Education),Jilin University,Changchun 130022,China

We would like to acknowledge that this work is supported by the National Natural Science Foundation of ChinaPostdoctoral Science Foundation of ChinaOpening Project of the Key Laboratory of Bionic Engineering (Ministry of Education)Jilin UniversityOpening Project of the Key Laboratory of Advanced Robotics of Jiangsu Provienceand Natural Natural Science Research Project of Higher Education of Jiangsu Prov-ince

Grant 52005355Grant 2020M671575Grant KF20200004Grant JAR201901Grant 20KJB460007

2021

仿生工程学报(英文版)
吉林大学

仿生工程学报(英文版)

CSTPCDCSCDSCIEI
影响因子：0.837
ISSN：1672-6529
年,卷(期)：2021.18(5)
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