论文标题
纳米颗粒从蒸发式无柄液滴中的自组装：新鲜的颗粒/底物相互作用的作用
Self-Assembly of Nanoparticles from Evaporating Sessile Droplets: Fresh Look into the Role of Particle/Substrate Interaction
论文作者
论文摘要
我们研究了通过将无柄滴的自由干燥对颗粒浓度和derjaguin-landau-verwey-overbeek（DLVO）粒子/底物相互作用获得的固体沉积形状的依赖性。与以前使用pH作为相互作用的对照参数的贡献相反，我们通过修改底物和颗粒的大小和表面化学的性质，在大多数干燥时间中维持了颗粒之间的长距离排斥相互作用，研究了浓度范围很广的浓度和粒子/底物DLVO力。我们的主要结果是，通过修改颗粒浓度在不同的浓度方向上获得的不同矿床形状相同，而与所研究的DLVO力和粒子浓度范围内的粒子/底物相互作用无关。第二个结果是，与期望相反，低颗粒浓度下干模式的主要形态始终显示所有研究系统的点状模式。
We studied the dependence of solid deposit shape obtained by free drying of sessile drops on the particles concentration and Derjaguin-Landau-Verwey-Overbeek (DLVO) particle/substrate interaction. In contrast to previous contributions using pH as a control parameter of interactions, we investigated an unprecedentedly wide range of concentrations and particle/substrate DLVO forces by modifying the nature of the substrate and particles as well as their size and surface chemistry whereas long-distance repulsive interactions between particles were maintained for most of the drying time. Our main result is that the different shapes of deposits obtained by modifying the particle concentration are the same in the different regimes of concentration regardless of particle/substrate interaction in the studied range of DLVO forces and particle concentrations. The second result is that, contrary to expectations, the dominant morphology of dry patterns at low particle concentration always shows a dot-like pattern for all the studied systems.
