Ionic Electroactive Polymer Actuators with Tailored NanoStructure Morphology

具有定制纳米结构形态的离子电活性聚合物致动器

• 批准号: 1130437
• 负责人: Qiming Zhang
• 金额: $ 50.16万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130437&HistoricalAwards=false
• 关键词: Ionic; Electroactive; Polymer; Actuators; Tailored

The research objective of this grant is to elucidate the fundamental micro- and nano-scopic processes that are responsible for the observed electromechanical responses in ionic electroactive polymers (i-EAPs). Electroactive polymers, because of their many attractive properties and characteristics including high strain response, low density, fracture tolerance, and pliability, are suitable for a broad range of sensing and actuating applications. i-EAPs that can be operated under a few volts are particularly attractive because this allows direct integration with advanced microelectronics, which opens up an entirely new device paradigm for multifunctional large-scale integrations. However, i-EAPs suffer relatively low efficiency as well as low actuation speed. The porous electrodes in traditional i-EAPs have a random morphology that physically impedes ion transport, resulting in slow response times and reduced efficiency. The proposed study will exploit i-EAPs with uniquely controlled and tunable nanostructure morphology and investigate ionic liquids that can maximize the strain generated and actuation speed. Ion size, and its transport through similarly sized (and controllable) nanoscale channels, has the potential to uncover new physics limiting transport. By systematically tailoring the nanostructure morphology, and varying the ionic liquids, we intend to unravel fundamental processes controlling the electromechanical response in the i-EAP materials and devices.If successful, this interdisciplinary collaborative effort will expand the known i-EAP materials, allow the operation of i-EAP devices to much above the electrochemical window of the electrolytes, develop an understanding of ion transport and storage in nanocomposites with known nanostructure morphology, and provide structure-property relations for different ions in i-EAP materials. This collaborative program between Penn State and MIT will provide education and training of graduate students and undergraduate in a multi-disciplinary exchange context, ranging from nano-materials science and engineering, nanocomposites and MEMs fabrication techniques, advanced nano-materials characterizations, through to device-level integration. This program will pursue a proliferation of the broad-impact results from this program by disseminating video features depicting the broad energy applications of advanced materials and nanotechnology to high-schools and county libraries and other institutions and two graduate courses will be enhanced. The program will also actively disseminate knowledge through public media outlets as appropriate, such as institutional press releases and the Discovery & Science Channels.

这项资助的研究目标是阐明离子电活性聚合物（i-EAP）中观察到的机电响应的基本微观和纳米过程。 电活性聚合物由于其许多有吸引力的性质和特征（包括高应变响应、低密度、断裂容限和柔韧性）而适用于广泛的感测和致动应用。 可以在几伏电压下工作的i-EAP特别有吸引力，因为这允许与先进的微电子技术直接集成，这为多功能大规模集成开辟了一个全新的器件范例。 然而，i-EAP遭受相对低的效率以及低的致动速度。 传统i-EAP中的多孔电极具有随机形态，其在物理上阻碍离子传输，导致响应时间缓慢和效率降低。 拟议的研究将利用具有独特控制和可调纳米结构形态的i-EAP，并研究可以最大化产生的应变和驱动速度的离子液体。 离子大小及其通过类似大小（和可控）的纳米通道的传输，有可能揭示限制传输的新物理。 通过系统地定制纳米结构形态，并改变离子液体，我们打算解开控制i-EAP材料和器件中机电响应的基本过程。如果成功，这种跨学科的合作努力将扩展已知的i-EAP材料，允许i-EAP器件的操作远远高于电解质的电化学窗口，发展对具有已知纳米结构形态的纳米复合材料中离子传输和存储的理解，并提供i-EAP材料中不同离子的结构-性能关系。 宾州州立大学和麻省理工学院之间的这一合作计划将在多学科交流背景下为研究生和本科生提供教育和培训，范围从纳米材料科学与工程，纳米复合材料和MEMS制造技术，先进的纳米材料表征，到设备级集成。该计划将通过向高中、县图书馆和其他机构传播描述先进材料和纳米技术广泛能源应用的视频功能，来追求该计划广泛影响结果的扩散，并将加强两门研究生课程。 该计划还将酌情通过公共媒体渠道积极传播知识，如机构新闻稿和探索科学频道。