Manufacturing of Responsive and Functional Nanoporous Metal/polymer Heterostructures using Strain Engineering

利用应变工程制造响应性和功能性纳米多孔金属/聚合物异质结构

• 批准号: 1301268
• 负责人: Antonia Antoniou
• 金额: $ 33.05万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1301268&HistoricalAwards=false
• 关键词: Manufacturing; Responsive; Functional; Nanoporous; Metal

The goal of this research is to investigate both the manufacturing process and properties of polymer-nanoporous metal bilayers. Nanoporous (NP) metals are a unique class of materials that are characterized by very high surface-to-volume ratios and possess such desirable properties of metals as high electrical conductivity and strength. The abundance of free surfaces is thought to give rise to many of the unusual properties of NP metals, including the ability to actuate in response to various external stimuli. These materials have shown great promise in many applications, including small-scale sensors and actuators. In this work, polymer-NP metal bilayers will be manufactured through nano-scale self-assembly processes with the ultimate goal of obtaining compliant, responsive, and functional three dimensional heterostructures. Heterostructures are structures made of different materials to obtain new properties. Specifically, this work will explore how mismatched strains affect the self-assembly of NP metals on polymer substrates, as well as the overall morphology of the structure. The response and fatigue behavior of the self-assembled heterostructures under different stimuli will be examined.The proposed research can lead to fundamental advances in understanding of the role of interfacial mismatching of strains and how they can be tuned to manufacture functional 3D macro-, micro-, or nano-scale objects with nano-size features. Both the manufacturing technology and the specific structures considered in this proposal may potentially impact a wide variety of technological areas. For example 3D structures responsive to different external stimuli can be used as sensors, actuators, switches, vesicles for delivery and filtrating applications, etc. Integration of research, teaching, and outreach programs across multiple disciplines including polymer science, nanotechnology, and manufacturing will impact the education and training of a diverse student body at graduate, undergraduate, and high-school levels.

本研究的目的是研究聚合物-纳米多孔金属双层膜的制备工艺和性能。纳米多孔(NP)金属是一类独特的材料，具有非常高的比表面体积比，并具有金属的高导电性和高强度等理想性质。自由表面的丰富被认为导致了NP金属的许多不寻常的性质，包括对各种外部刺激做出反应的能力。这些材料在许多应用中显示出巨大的前景，包括小型传感器和执行器。在这项工作中，将通过纳米级的自组装过程来制备聚合物-NP金属双层膜，最终目标是获得顺应性、响应性和功能性的三维异质结构。异质结构是由不同材料制成的结构，以获得新的性能。具体地说，这项工作将探索不匹配的应变如何影响NP金属在聚合物衬底上的自组装，以及结构的整体形态。该研究将考察自组装异质结构在不同刺激下的响应和疲劳行为。所提出的研究将导致在理解界面应变失配的作用以及如何调整它们以制造具有纳米尺寸特征的功能3D宏观、微观或纳米尺度物体方面取得根本性进展。本提案中考虑的制造技术和具体结构都可能对各种技术领域产生潜在影响。例如，响应不同外部刺激的3D结构可以用作传感器、执行器、开关、输送和过滤应用的囊泡等。跨多学科的研究、教学和推广计划的集成将影响研究生、本科生和高中水平的多样化学生群体的教育和培训。