NER: Nanoparticle Assembly of Nanowire Composites and Nano- and Microfluidic Vasculature

建议编号：CTS-0609157首席研究员：Gilchrist，James F.从属关系：利哈伊大学提案标题：NER：纳米线复合材料的纳米颗粒组装和纳米和微流体血管的智力价值拟议的探索性研究计划将开发一种使用纳米颗粒介质电泳创建精密自组装纳米和微结构材料的方法。这一过程产生了两类材料：1)具有各向异性导电性和热输运性质的复合材料和2)嵌入微血管的结构。将建立这种工艺形成嵌入纳米线复合材料的可行性，并将进行参数研究，以评估电场强度和几何形状、纳米颗粒尺寸和极化、复杂的流体介电常数和弹性以及基质固化对形成速度和最终纳米线结构的影响。利用热可逆凝胶，这种纳米复合材料可以暂时使用，然后溶解并重新分散以供再次使用。利用沿局部电场线线性或断裂生长的纳米线的溶解作为血管系统的模板，应该可以决定微流体网络的结构和连通性。广泛的影响：在粘合剂中直接形成纳米线复合材料的能力有可能简化各种电子设备的加工。无需精确对准的组件和基板之间的连接的自组装可能会对传感器和显示器生产技术产生重大影响。使用提出的纳米颗粒自组装方法创建微血管系统可以在资源有限的情况下，如在战场或太空中，实现微化学过程的使用点制造。该计划将直接教育研究生，所产生的结果将在课程、期刊出版物、会议上传播，任何具有美感质量的图像将被整合到目前正在开发的利哈伊谷艺术/纳米项目中。拟议的研究结果将对活跃的纳米结构和纳米系统计划的层次化纳米制造和纳米尺度器件和系统架构领域产生重大影响。

ABSTRACTProposal Number: CTS-0609157 Principal Investigator: Gilchrist, James F.Affiliation: Lehigh University Proposal Title: NER: Nanoparticle Assembly of Nanowire Composites and Nano- and Microfluidic Vasculature Intellectual MeritThe proposed exploratory research program will develop a method of creating precision self-assembled nano- and micro-structured materials using nanoparticle dielectrophoresis. Two classes of materials result from this process: 1) composites having anisotropic electrical conductivity and thermal transport properties and 2) structures with embedded microvasculature. The feasibility of this process to form embedded nanowire composites will be established and parametric studies will be performed to evaluate the effect of electric field strength and geometry, nanoparticle size and polarization, complex fluid permittivity and elasticity, and matrix solidification on rate of formation and final nanowire structures. Using thermoreversible gels, such nanocomposites may be formed for temporary use and then dissolved and redispersed for re-use. Using dissolution of nanowires grown linearly or fractally along local electric field lines as a template for vasculature, it should be possible to dictate the structure and connectivity of microfluidic networks.Broader Impacts: The ability to directly form nanowire composites in adhesives has the potential to streamline and simplify the processing of various electronic devices. Self assembly of connections between components and substrates without the need for precision alignment may have significant impact on sensor and display production technologies. Creation of microvasculature using the proposed nanoparticle self assembly method could allow point-of-use fabrication of microchemical processes in situations of limited resources such as on the battlefield or in space. This program will directly educate a graduate student and the results generated will be disseminated in courses, in journal publications, at conferences, and any images of an aesthetically pleasing quality will be integrated into a Lehigh Valley Art/Nano project currently under development. The results of the proposed research will significantly impact both the hierarchical nanomanufacturing and nanoscale devices and system architecture areas of the Active Nanostructures and Nanosystems Program.