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Air-floating platform is the core component of long raster engraving system. In order to design an air-floating platform to greatly meet the demands of long raster engraving, this paper, based on the validation of simulation model accuracy by test platform, proposes a three-dimension finite element model about gas film, and investigates the influence of the gas film thickness, air pressure and width of bottom guideway on the loaded capacity and air consumption by orthogonal test method. Then the best design plan of air-floating platform structure was determined by range analysis method. The results showed that air film thickness H=0.02 mm, gas supply pressure Ps=0.15 MPa, width of bottom guideway Bx=140 mm, the loading capacity of single-sided guideway is about 3177 N, its air consumption is 191487 mm3/s. Hence, this plan can not only meet the requirements of the loading capacity but also reduce air consumption of air-floating platform so as to provide a basis for optimum structure design about air-floating platform.

The growing demand for portable and wearable electronics has led to an increased interest in flexible electrodes. The 3D flexible electrode structure is the key to realising the wide application of diversified flexible electronic devices. However, most of the existing flexible electrode manufacturing methods is restricted to fabricating 1D and 2D electrode structures, and it is difficult to simultaneously complete the preparation of the substrate-electrode double-flexible structure in one device. Here, we propose a dual-mode 3D printing system that can realise the one-step integrated manufacturing of flexible 3D electronic devices with nanofiber membrane substrates and liquid metal electrodes. Nanofiber membranes and liquid metal materials have a double flexible structure that increases the compliance performance of the electrode. As a proof of concept, we demonstrated the application of 3D flexible electrodes in electrostatically driven microfluidic valves. The 8 kV driving voltage can make the displacement of the movable membrane more than 40 μm, and realise the on–off control of the microvalve. This technology has the advantages of low cost and integration, demonstrating the promising potential of such printed 3D electrodes to enable 3D flexible electrode devices to be used in microfluidics, software robots and wearable electronic devices.

Bionic electronic skin with human sensory capabilities has attracted extensive research interest, which has been applied in the fields of medical health diagnosis, wearable electronics, human–computer interaction, and bionic prosthetics.

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