MODELLING OF GLASS MICROSPHERE ASSEMBLY IN A CAPILLARY FLOW CELL FOR PHOTONIC CIRCUIT FABRICATION

用于光子电路制造的毛细管流动池中的玻璃微球组件的建模

• 批准号: EP/G006571/1
• 负责人: James Wilkinson
• 金额: $ 11.61万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG006571%2F1
• 关键词: MODELLING; GLASS; MICROSPHERE; ASSEMBLY; CAPILLARY

Under this grant we propose to develop and validate numerical/mathematical models of the receding fluid edge in a thin tilted flow cell suitable for self-assembly of heavy particles onto waveguide substrates (useful for placement of glass spheres for new optics applications) using the COMSOL Finite Element Multi-Physics Software Package. Under EPSRC grant GR/S96500/01 self-assembly methods have been successfully developed using non-wettable substrates patterned with wettable patches in conjunction with a novel variable tilt and flow rate technique which overcomes the problems associated with sedimentation of heavy particles. Results have demonstrated that the quality of assembly is strongly reliant on the relative positions of the wettable patches together with the global shape and flexibility of the fluid edge throughout assembly. The numerical methods developed under this grant will be validated against the studies conducted under the previous research and will build a capability to rapidly assess the experimental/industrial requirements for the deposition of particles onto patterns of different size, layout and feature density. The model will result in a significant reduction in the number of experiments that would normally be required to define the combination of parameters required for self-assembly, and will provide a design tool which will be useful for aid scientists interested in dewetting of substrates for a range of applications (Self assembly of particles, polymer films, inkjet applications)

根据这项授权，我们建议开发和验证数值/数学模型的后退流体边缘在一个薄的倾斜流动池适合自组装的重粒子到波导基板（用于放置玻璃球的新的光学应用）使用COMSOL有限元多物理软件包。在EPSRC资助GR/S96500/01下，已经成功地开发了自组装方法，该方法使用了具有图案化的无图案化的衬底，该衬底与新颖的可变倾斜和流速技术结合，该技术克服了与重颗粒的沉降相关的问题。结果表明，组装的质量是强烈依赖于的相对位置，连同全球的形状和灵活性的流体边缘在整个组装过程中的曲面片。根据该资助开发的数值方法将根据先前研究进行的研究进行验证，并将建立快速评估颗粒沉积到不同尺寸，布局和特征密度图案上的实验/工业要求的能力。该模型将导致实验数量的显着减少，通常需要定义自组装所需的参数组合，并将提供一个设计工具，这将是有用的援助科学家感兴趣的去湿的基板的一系列应用（自组装的颗粒，聚合物薄膜，喷墨应用）