Design and Analysis of Osmosis-based Artificial Muscle  

作　　者：Juhui Gim Changsun Ahn 

机构地区：[1]School of Mechanical Engineering,Pusan National University,Busan 46241,Korea

出　　处：《Journal of Bionic Engineering》2019年第1期56-65,共10页仿生工程学报（英文版）

摘　　要：This paper presents the design and analysis of an osmosis-based artificial muscle inspired by the leaf movements of Mimosa pudica.M.pudica's leaves quickly contract using osmosis pressure in the pulvinus when they are stimulated.We analyzed and simulated an osmosis system to identify the factors for fast osmosis reactions and designed a prototype artificial muscle based on the results.The osmosis phenomenon was mathematically modeled,analyzed,and verified through several experiments.The analysis shows that fast osmosis responses require a large diffusion coefficient with a high-flux membrane or small ratio of the cross-sectional area to the volume of the osmosis system.We designed a micro-scale system to achieve the required ratio.The contraction and relaxation of the artificial muscle are realized by changes of the local concentration of potassium ions,which can be aggregated by a controllable electric field.As a result,the artificial muscle shows controllable behavior with fast reactions.

关 键 词：MIMOSA pudica osmosis artificial MUSCLE CROSS-SECTIONAL area to VOLUME ratio MICRO-SCALE 

分 类 号：TB[一般工业技术]