磁场
材料科学
机器人
生物医学工程
蠕动
磁性纳米粒子
纳米技术
计算机科学
物理
解剖
工程类
纳米颗粒
人工智能
生物
量子力学
作者
Wenlong Pan,Chongyi Gao,Zhu Chen,Yabing Yang,Lin Xu
出处
期刊:Biomimetics
[MDPI AG]
日期:2023-08-19
卷期号:8 (4): 379-379
被引量:4
标识
DOI:10.3390/biomimetics8040379
摘要
Fruit fly larvae, which exist widely in nature, achieve peristaltic motion via the contraction and elongation of their bodies and the asymmetric friction generated by the front and rear parts of their bodies when they are in contact with the ground. Herein, we report the development of an untethered, magnetic, temperature-sensitive hydrogel-based soft robot that mimics the asymmetric micro-patterns of fruit-fly-larvae gastropods and utilizes cyclic deformation to achieve directional peristaltic locomotion. Due to Néel relaxation losses of nanomagnetic Fe3O4 particles, the hydrogel-based soft robot is capable of converting changes in external alternating magnetic stimuli into contracting and expanding deformation responses which can be remotely controlled via a high-frequency alternating magnetic field (AMF) to realize periodic actuation. Furthermore, the Fe3O4 particles included in the hydrogel-based soft robot cause it to follow a gradient magnetic field in confined liquid environments and can be coupled with AMFs for the targeted release of water-soluble drugs or targeted magnetic hyperthermia therapy (MHT). We believe that such a controlled motion can enable highly targeted drug delivery, as well as vascular disease detection and thrombus removal tasks, without the use of invasive procedures.
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