Magnetic Microactuators Based on Particle Jamming
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide Magnetic microactuators and microrobots have the potential to revolutionize remote manipulation and swarm-based collaboration. Unfortunately, conventional approaches to controlling individual magnetic systems cannot be scaled down to the microscale due to fundamental challenges in the generation and modification of magnetic fields. We here demonstrate a novel actuation mechanism that imparts magnetic microactuators with an unprecedented ease of fabrication and dimensional scalability. Through mechanical jamming in binary particle mixtures, magnetic ordering, and pronounced anisotropy could be induced. Combined simulation and experimental investigation confirm the importance of arresting forces from neighboring particles as the origin of this behavior. This sensitivity of magnetic properties to assembly morphology can be exploited to produce novel actuators that utilize minute changes in particle size or pressure. We demonstrate the transduction of particle swelling into magnetic torque locking that enables active magnetic control in microrobots for future remote operating applications.
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Research context
OpenAlex topics: Micro and Nano Robotics · Modular Robots and Swarm Intelligence · Characterization and Applications of Magnetic Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Molecular Science and Technology, Taiwan International Graduate Program, Academia Sinica, Taipei 115024, Taiwan (R.O.C)
International Graduate Program of Molecular Science and Technology, National Taiwan University, Taipei 10617, Taiwan (R.O.C)
Institute for Atomic and Molecular Sciences, Academia Sinica; Taipei 106, Taiwan (R.O.C)
Department of Physics, National Taiwan University; Taipei 106, Taiwan (R.O.C)
Department of Low-Dimensional Systems, J. Heyrovsky Institute of Physical Chemistry, Dolejškova 2155, Libeň 182 00 Praha 8, Czech Republic
Department of Physics, National Central University, Chung-Li 320, Taiwan (R.O.C)
Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 106, Taiwan (R.O.C)
Department of Engineering and System Science, National Tsing Hua University Hsinchu City, Hsinchu 300044, Taiwan (R.O.C)
Funding
Academia Sinica · National Science and Technology Council
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