论文标题
对流动力学将胶体纳米片的自组装诱导到微观花卉结构中
Advection kinetics induced self assembly of colloidal nanoflakes into microscale floral structures
论文作者
论文摘要
本文探讨了在纳米结构的自组装中，内部流体动力和对流液滴液滴中的统治作用，形成花卉图案。测试水丙酮二元液和BI2O3纳米片的复合液。允许Microliter壁裤液滴蒸发，并使用扫描电子显微镜检查干燥的模式。观察到分布式自组装的玫瑰的存在像结构一样。花卉结构的种群密度，结构和形状被发现取决于二元液体组成和纳米材料浓度。进行了详细的微观粒子图像速度法分析，以定性和定量地描述蒸发液滴中的溶质马龙尼对流。已经表明，内部对流的动力学，政权和位置是纳米片的聚集，聚集和自组装的负责任因素。另外，纳米结构和复杂流体的大小。
This article explores the governing role of the internal hydrodynamics and advective transport within sessile colloidal droplets on the self assembly of nanostructures to form floral patterns. Water acetone binary fluid and Bi2O3 nanoflakes based complex fluids are experimented with. Microliter sessile droplets are allowed to vaporize and the dry out patterns are examined using scanning electron microscopy. The presence of distributed self assembled rose like structures is observed. The population density, structure and shape of the floral structures are noted to be dependent on the binary fluid composition and nanomaterial concentration. Detailed microscopic particle image velocimetry analysis is undertaken to qualitatively and quantitatively describe the solutal Marangoni advection within the evaporating droplets. It has been shown that the kinetics, regime and location of the internal advection are responsible factors towards the hydrodynamics influenced clustering, aggregation and self-assembly of the nanoflakes. In addition, the size of the nanostructures and the complex fluids.
