Fig. 5: Fabrication of microstructures made of heterogeneous materials and demonstration of on-demand functionalities. | Nature Communications

Fig. 5: Fabrication of microstructures made of heterogeneous materials and demonstration of on-demand functionalities.

From: Capillary trapping of various nanomaterials on additively manufactured scaffolds for 3D micro-/nanofabrication

Fig. 5: Fabrication of microstructures made of heterogeneous materials and demonstration of on-demand functionalities.

SEM images of an IPS honeycomb-like microscaffolds (a), the Au NPs-Ag NPs co-assembled (b), where the morphologies of Au, Ag NPs on the beams before annealing (c) and after annealing treatment (240 °C for 2 h, d, g), as well as the EDS mappings of Ag (e) and Au (f) elements distribution on beams after annealing treatment. SEM images of IPS (h) and Fe3O4/BaTiO3 co-assembled (annealed at high temperature of 600 °C, (i)) 3D hollow microsphere. j EDS mapping of Ba and Fe elements distribution. k Video snapshot showing magnetically controlled microrobots made of Fe3O4-BaTiO3 3D hollow microspheres (annealed at 600 °C). l Piezoelectric current of the microrobots under the treatment of a focused ultrasound with a power of 100 mW m−2. Scale bars are 60 μm in (a, b, h, i), 200 nm in (c, g), 10 μm in (d–f, j), and 1 mm in (k). Source data are provided as a Source Data file.

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