The Coiling of Split Dandelion Scape Induced by Cell Hygroscopicity
作者机构：Institute of Applied MechanicsCollege of Mechanical and Vehicle EngineeringTaiyuan University of TechnologyTaiyuan 030024China Shanxi Key Laboratory of Material Strength and Structural ImpactTaiyuan University of TechnologyTaiyuan 030024China Institute of PhysicsChinese Academy of SciencesBeijing 100080China
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2021年第34卷第3期
页 面：393-403页
核心收录：
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
基 金：The authors greatly appreciate the financial support of the National Natural Science Foundation of China(11502155) Natural Science Foundation of Shanxi Province(201901D211112) the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2019L0328).We thank Prof.Yuren Wang and Mrs.Tingt-ing Zhao for discussions
主 题：Dandelion scape Coiled pattern Cell hygroscopicity Asymmetric deformation Expansive material model
摘 要：It is of great significance to study the water absorption and expansion of cells,which are essential for the growth and life regulation of plants,not only for understanding the complex life phenomena of plants,but also for the manufacture of biomimetic *** main purpose of this study is to shed light on the mechanism of a novel coiling phenomenon of the split dandelion scape soaked in water and the high concentration mannitol *** discovered that the difference between water absorption/dehydration capacities of inner cells and lateral cells of the split dandelion scape generates asymmetric expansion/contraction between inner and lateral layers,resulting two opposite coiled *** to the deformable hypothesis of the thermal expansion model,the water absorption-induced cell expansion model was proposed to explain the coiling process of the split dandelion *** the simulation and experimental results revealed that the coiling of dandelion scape is strongly depended on the response of cells to the stimulation of the solution *** considerable potential load bearing capacity of plants,the coiling phenomenon can be an inspiration to the designs of soft robots and bionic sensors for humidity control.
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