Process Development for Microscale Robotic Deposition of Concentrated Colloidal Gels

浓缩胶体凝胶微尺度机器人沉积工艺开发

• 批准号: 0140466
• 负责人: Andrew Alleyne
• 金额: $ 38.5万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0140466&HistoricalAwards=false
• 关键词: Process; Development; Microscale; Robotic; Deposition

This grant provides funds for the development of a processing tool, as well as a processing planning system, for the rapid deposition of concentrated colloidal gels. This is a solid freeform fabrication technology and the current grant is focused at performing deposition based fabrication on length scales the order of microns. The tool to be developed is a robotic system consisting of dual stage serving axes in 3 dimensions. A coarse stage driven by linear motors will carry a fine stage driven by piezos which will actually support the deposition head. Process modeling will be performed to determine material flow behavior and solidification characteristics. These models will then be used in a process planning CAE tool to determine optimal machine processing conditions. The overall project will fuse together expertise from the fields of Robotics, Controls, Manufacturing, and Materials Science to create very small scale periodic structures in an extremely rapid fashion.If successful, this work will enable the creation of microscale periodic lattices. By developing intentional defects in the structures, these lattices can then be used to provide optical waveguide capability for advanced photonic devices. The benefit of the proposed method is the time taken to construct such devices. While standard lithography methods can achieve the same resolution, the time for processing is on the order of days. The current system will have build times on the order of minutes. This will allow for the exploration of a huge design space in creating photonic bandgap structures that could be the future backbone of computing and communication applications.

这笔赠款提供资金用于开发一种加工工具，以及一个加工规划系统，用于快速沉积浓缩胶体凝胶。这是一种固体自由成型制造技术，目前的资助重点是在微米量级的长度尺度上进行基于沉积的制造。要开发的工具是一个机器人系统，包括两个阶段的服务轴在3维。由线性马达驱动的粗平台将承载由压电驱动的精细平台，该精细平台将实际上支撑沉积头。将进行工艺建模，以确定材料流动行为和固化特性。然后，这些模型将用于工艺规划CAE工具，以确定最佳的机器加工条件。整个项目将融合机器人、控制、制造和材料科学领域的专业知识，以极快的速度创建非常小规模的周期性结构。如果成功，这项工作将能够创建微尺度周期性晶格。通过在结构中形成有意的缺陷，这些晶格可以用于为先进的光子器件提供光波导能力。所提出的方法的益处是构造这种装置所花费的时间。虽然标准的光刻方法可以实现相同的分辨率，但处理时间大约为几天。当前系统的构建时间为几分钟。这将允许在创建光子带隙结构方面探索巨大的设计空间，这些光子带隙结构可能是计算和通信应用的未来支柱。