Abstract: Disclosed is an aqueous fluorescent ink and a preparation method and use thereof. The aqueous fluorescent ink provided by the present disclosure includes 0.10%-0.14% of polystyrene micro-spheres, 0.010%-0.014% of fluorescent dyes, 0.4%-0.6% of surfactants, and the balance of water. The present disclosure uses polystyrene micro-spheres as a fluorescent dye carrier, which is colorless and transparent under ordinary daylight and completely invisible, and displays fluorescence only when irradiated by ultraviolet light and has high fluorescence intensity. The surfactant makes the polystyrene fluorescent micro-spheres uniformly dispersed in the fluorescent ink, and the stability of the fluorescent ink is improved. Water is used as a solvent, which has excellent safety and environmental friendliness. The accuracy of the printed patterns can reach 30 ?m, which can help realize large-format ultra-high-precision patterned anti-counterfeiting encryption printing.

Abstract: Provided is a liquid metal-based flexible electronic device and a method for preparing a liquid metal-based flexible electronic device, that includes: preparing an Acrylonitrile Butadiene Styrene (ABS) plastic model; performing an ion sputtering on a surface of the ABS plastic model to form a gold film, to obtain a gold-plated ABS circuit; introducing a first silica gel into a mold to suspend the gold-plated ABS circuit inside the mold, and curing the first silica gel to obtain a cured model; immersing the cured model in acetone to dissolve the ABS model, to obtain a microchannel with a gold plating on an inner wall of the microchannel in a first silica gel substrate; and injecting a gallium-indium eutectic, inserting a copper wire, and applying a second silica gel and curing the second silica gel, to obtain the liquid metal-based flexible electronic device.

Abstract: A liquid metal-based flexible electron device and a preparation method are disclosed. In the method, 3D printing and the characteristic that ABS plastic can be dissolved by acetone are utilized, and a microchannel is quickly constructed in the flexible substrate of Ecoflex, and liquid metal is then injected into the microchannel to complete the manufacturing of a flexible electronic device. The gold film on the surface of ABS is transferred to the surface of the flexible Ecoflex substrate.

Abstract: Disclosed is an aqueous fluorescent ink and a preparation method and use thereof. The aqueous fluorescent ink provided by the present disclosure includes 0.10%-0.14% of polystyrene micro-spheres, 0.010%-0.014% of fluorescent dyes, 0.4%-0.6% of surfactants, and the balance of water. The present disclosure uses polystyrene micro-spheres as a fluorescent dye carrier, which is colorless and transparent under ordinary daylight and completely invisible, and displays fluorescence only when irradiated by ultraviolet light and has high fluorescence intensity. The surfactant makes the polystyrene fluorescent micro-spheres uniformly dispersed in the fluorescent ink, and the stability of the fluorescent ink is improved. Water is used as a solvent, which has excellent safety and environmental friendliness. The accuracy of the printed patterns can reach 30 ?m, which can help realize large-format ultra-high-precision patterned anti-counterfeiting encryption printing.