Extended Data Fig. 1: Scanning electron microscope images of NdFeB and fumed silica particles and printed fibres.
From: Printing ferromagnetic domains for untethered fast-transforming soft materials
a, Magnetizable microparticles of NdFeB alloy in flake-like shapes with an average size of 5 µm. b, Fumed silica nanoparticles with an average size of 30 nm. c–f, Fibres printed using nozzles with diameters of 50 µm (c), 100 µm (d), 200 µm (e), and 410 µm (f). g, The ratio between the printed fibre and the nozzle diameter, which is called the die-swelling ratio, plotted against the nozzle diameter.
