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首页> 外文期刊>Lab on a chip >Non-powered capillary force-driven stamped approach for directly printing nanomaterials aqueous solution on paper substrate
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Non-powered capillary force-driven stamped approach for directly printing nanomaterials aqueous solution on paper substrate

机译：非动力毛细管力驱动的冲压方法，用于直接印刷纳米材料水溶液在纸基材上

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摘要

The recent boom of nanomaterials printing in the fields of biomedical engineering, bioanalysis and flexible electronics has greatly stimulated researchers' interest in printing technologies. However, specifically formulated nanomaterial inks have limited the types of printable nanomaterials. Here, a unique non-powered capillary force-driven stamped (CFDS) approach, combining a 3D-printed stamper with a paper substrate, is developed for directly printing patterned nanomaterials aqueous solution. The CFDS approach has two processes, including the loading process in which the capillary force of the stamper channel is stronger than gravity, and the deposition process, in which the synergistic action of the capillary force of the paper fibre tubes and gravity is approximately 20 times the capillary force of the stamper channel. Four additive-free nanomaterial aqueous solutions, including nanowires, nanosheets, nanostars and nanogels, are used to print patterns, and show slight diffusion and desired uniformity with a diffusion rate and roundness of 1.12 and 0.78, respectively, demonstrating the feasibility of this approach. Four kinds of nanogel with different fluorescence labels are simultaneously printed to challenge the approach and demonstrate its flexibility and scalability. The resolution of the approach is 0.3 mm. Without any post-processing, the stamped paper substrates directly serve as paper-based surface enhanced Raman scattering substrates with an enhancement factor of 4 x 10(6) and as electrodes with a resistance of 0.74 Omega, demonstrating their multi-functionality. Due to its general, flexible and scalable applicability, this simple, low-cost and non-powered approach could be widely applied to the personalized printing of nanomaterials on paper substrates.
机译：最近在生物医学工程，生物分析和柔性电子产品领域印刷的纳米材料印刷，极大地刺激了研究人员对印刷技术的兴趣。然而，具体配制的纳米材料油墨限制了可打印纳米材料的类型。这里，为直接印刷图案化的纳米材料水溶液，开发了一种独特的非动力毛细管力驱动的冲压（CFD）方法，与纸基材相结合，用于直接印刷图案化的纳米材料水溶液。 CFDS方法具有两种方法，包括加载过程，其中压模通道的毛细管力比重力更强，以及纸纤维管和重力的毛细力的协同作用约为20倍压模通道的毛细管力。四种无添加剂的无添加剂纳米材料水溶液，包括纳米线，纳米片，纳米杆和纳米凝电池，用于打印图案，并分别显示出具有1.12和0.78的扩散速率和圆度的轻微扩散和所需均匀性，证明了这种方法的可行性。同时印刷具有不同荧光标记的四种纳米凝电池以挑战这种方法并证明其灵活性和可扩展性。该方法的分辨率为0.3毫米。没有任何后处理，冲压纸基板直接用作基于纸的表面增强拉曼散射基板，其增强因子为4×10（6），并且电极具有0.74ω的电极，证明了它们的多功能。由于其一般，灵活且可扩展的适用性，这种简单，低成本和非动力的方法可广泛应用于纸质基板上的纳米材料的个性化印刷。

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