Facile, customizable platforms are important for a variety of microfluidic applications. This work presents a platform that utilizes surface tension induced pumping based on Young–Laplace pressure. The approach allows modifiable transport of fluids across surfaces without external pumping modules. The Laplace-chip is based on a superhydrophobic coating (NeverWet™) that is patterned by laser micromachining. For fast and consistent deposition of specific liquid volumes/droplets onto the “Laplace-chip” without the need for conventional fluid dispensing tools (e.g. pipette), a multiplexed droplet factory (MDF) was developed. The MDF is placed above the Laplace-chip and consists of cylindrial reservoirs that are filled by a “pour and swipe” approach. It enables the formation of hundreds of droplets (10–140 µL, 7.3% deviation) with both position and volume control as well as the simultaneous initiation of Young–Laplace induced pumping on the Laplace-chip. Furthermore, the flowrate of Young–Laplace induced pumping is adjustable through different pattern designs and dispensed droplet volumes. The Laplace-chip and MDF is used to carry out silver nanoparticle and nanocluster synthesis, where the reagent introduction rate is critical to material properties, to demonstrate flowrate controlled application possibilities. A Laplace-chip employing different channel length is employed to carry out the reduction of Ag⁺ to Ag⁰, using NaBH₄. Low reducing agent concentrations and long pumping times (40–60 min) resulted in molecule-like silver cluster (AgNC) synthesis, while high reducing agent concentrations and short pumping times (5–20 min) led to the synthesis of silver nanoparticles (AgNPs).

便捷的，可定制的平台对于各种微流体应用都很重要。这项工作提出了一个平台，该平台利用了基于Young-Laplace压力的表面张力引起的泵送作用。该方法允许在没有外部泵送模块的情况下跨表面可修改地输送流体。拉普拉斯芯片基于超疏水涂层（NeverWet™），该涂层通过激光微加工形成图案。为了在不使用常规流体分配工具（例如移液器）的情况下将特定的液体体积/小滴快速一致地沉积到“拉普拉斯芯片”上，开发了多路液滴工厂（MDF）。MDF放置在Laplace芯片上方，由圆柱状储罐组成，这些储罐通过“倾倒和滑动”方法填充。它可以形成数百个液滴（10–140 µL，7。位置和体积控制，以及在拉普拉斯芯片上同时启动Young-Laplace感应泵浦的3％偏差）。此外，Young-Laplace感应泵的流量可通过不同的模式设计和分配的墨滴量进行调节。拉普拉斯芯片和中密度纤维板用于进行银纳米颗粒和纳米簇的合成，其中试剂的引入速率对材料性能至关重要，以证明流速受控的应用可能性。采用采用不同沟道长度的拉普拉斯芯片进行银的还原 拉普拉斯芯片和中密度纤维板用于进行银纳米颗粒和纳米簇的合成，其中试剂的引入速率对材料性能至关重要，以证明流速受控的应用可能性。采用采用不同沟道长度的拉普拉斯芯片进行银的还原 拉普拉斯芯片和中密度纤维板用于进行银纳米颗粒和纳米簇的合成，其中试剂的引入速率对材料性能至关重要，以证明流速受控的应用可能性。采用采用不同沟道长度的拉普拉斯芯片进行银的还原用NaBH ₄ ⁺到Ag ⁰。低还原剂浓度和长泵送时间（40-60分钟）导致了分子状的银团簇（AgNC）的合成，而高还原剂浓度和短泵送时间（5-20​​分钟）导致了银纳米颗粒（AgNPs）的合成）。