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journal article·2024-08Open access

A Naturally Inspired Extrusion‐Based Microfluidic Approach for Manufacturing Tailorable Magnetic Soft Continuum Microrobotic Devices

Lukas Hertle, Semih Sevim, Jiawei Zhu, Vitaly Pustovalov, Andrea Veciana, Joaquin Llacer‐Wintle, Fabian C. Landers, Hao Ye, Xiang‐Zhong Chen, Hannes Vogler, Ueli Grossniklaus, Josep Puigmartí‐Luis, Bradley J. Nelson, Salvador Pané

Advanced Materials· Volume 36· Issue 31
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Source abstract

Abstract

Abstract Soft materials play a crucial role in small‐scale robotic applications by closely mimicking the complex motion and morphing behavior of organisms. However, conventional fabrication methods face challenges in creating highly integrated small‐scale soft devices. In this study, microfluidics is leveraged to precisely control reaction‐diffusion (RD) processes to generate multifunctional and compartmentalized calcium‐cross‐linkable alginate‐based microfibers. Under RD conditions, sophisticated alginate‐based fibers are produced for magnetic soft continuum robotics applications with customizable features, such as geometry (compact or hollow), degree of cross‐linking, and the precise localization of magnetic nanoparticles (inside the core, surrounding the fiber, or on one side). This fine control allows for tuning the stiffness and magnetic responsiveness of the microfibers. Additionally, chemically cleavable regions within the fibers enable disassembly into smaller robotic units or roll‐up structures under a rotating magnetic field. These findings demonstrate the versatility of microfluidics in processing highly integrated small‐scale devices.
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Research context

Nanomaterials

OpenAlex topics: Micro and Nano Robotics · Advanced Materials and Mechanics · Advanced Sensor and Energy Harvesting Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Multi‐Scale Robotics Lab Institute of Robotics and Intelligent Systems ETH Zurich Tannenstrasse 3 Zurich 8092 Switzerland

Institute of Optoelectronics State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Fudan University Shanghai 200433 P. R. China

Yiwu Research Institute of Fudan University Yiwu Zhejiang 322000 China

Department of Plant and Microbial Biology & Zurich‐Basel Plant Science Center University of Zurich Zollikerstrasse 107 Zurich 8008 Switzerland

Departament de Ciència dels Materials i Química Física Institut de Química Teòrica i Computacional University of Barcelona Martí i Franquès, 1 Barcelona 08028 Spain

Institució Catalana de Recerca i Estudis Avançats (ICREA) Pg. Lluís Companys 23 Barcelona 08010 Spain

Funding

ETH Risk Center · Generalitat de Catalunya · HORIZON EUROPE Framework Programme · Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

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