What is it about?
A magnetically responsive wood is reported that can achieve programmable locomotion in the rotating magnetic field. The magnetized wood is fabricated by removing lignin from the cell walls, which produces a porous microstructure, enabling facile and stable combination between NdFeB and wood. With the directional arrangement of magnetic moments after magnetization, the magnetized wood with obviously positive and negative magnetic poles is magnetic stability, and can complete various movements including spatial flipping, bypass obstacles, climb up, and down under the driven by magnetic torques.
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Photo by Dominik Scythe on Unsplash
Why is it important?
Stimulus-responsive actuators composed of compliant materials (e.g., hydrogel, shape memory polymer, and elastomers) with deformable structures exhibit huge potential in the fields of green electronics, flexible sensors and soft robot. As one of the key challenges for sustainable development, an extension of the polymer substrates to inexpensive, abundant, and environmentally friendly biomass materials while keep the fast stimuli responsiveness will be of great interests.
Perspectives
Wood is a natural "carbon storage" material that has not been completely exploited, I hope more function of wood can be discovered and more application using wood can be expanded.
Wentao Gan
Northeast Forestry University
Read the Original
This page is a summary of: Wood Robot with Magnetic Anisotropy for Programmable Locomotion, Advanced Functional Materials, November 2022, Wiley,
DOI: 10.1002/adfm.202207209.
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