标题： 流体力和耗竭相互作用在指导水相金纳米棒在疏水表面上组装中的作用 显示英文标题

标题： Role of Fluid Forces and Depletion Interactions in Directing Assembly of Aqueous Gold Nanorods on Hydrophobic Surfaces

摘要： 宏观流体流动与纳米尺度力之间的相互作用导致了通过蒸发诱导自组装形成的远距离组装结构。 各向异性的金纳米棒（AuNR）可以形成无序、层状或垂直有序的远距离结构，但控制其组装仍然是一个挑战，需要更深入理解基本的相互作用机制。 在本工作中，我们建立了使用光学张力计测量的$in~situ$干燥轮廓与通过电子显微镜成像的沉积图案$ex~situ$之间的相关性。 增加粒子浓度在微观尺度上引发了从咖啡环到均匀沉积的转变，而纳米尺度结构则从各向同性/层状转变为垂直对齐的晶体AuNR。 毛细管和马兰戈尼流的相互作用在宏观和纳米尺度上影响组装，沉积过程和纳米粒子排列对粒子间和纳米粒子-基底相互作用高度敏感。 通过系统研究关键参数，我们旨在建立一个全面的框架，用于有目的地设计和制造具有精确控制结构和性能的纳米材料。 显示英文摘要

摘要： The interaction between macroscopic fluid flow and nanoscale forces has resulted in the formation of long-range assemblies through evaporation-induced self-assembly. Anisotropic gold nanorods (AuNR) can form disordered, smectic, or vertically ordered long-range structures, but controlling their assembly remains a challenge and requires a deeper understanding of fundamental interaction mechanisms. In this work, we established a correlation between the $in~situ$ drying profiles, measured using an optical tensiometer, and deposit pattern, imaged $ex~situ$ using electron microscopy. Increasing particle concentration induced a transition from coffee-ring to uniform deposition at the microscale, while nanoscale structures shifted from isotropic/smectic to vertically aligned crystalline AuNRs. The interplay of capillary and Marangoni flow influences assembly at both macro and nanoscales, with the deposition process and nanoparticle ordering being highly sensitive to interparticle and nanoparticle-substrate interactions. By systematically studying key parameters, we aim to develop a comprehensive framework for the rational design and fabrication of nanomaterials with precisely controlled structure and properties.