CAREER: Measurement and Analysis of Osmosis-Mediated, Closed-cell Poroelastic Dynamics

职业：渗透介导的闭孔多孔弹性动力学的测量和分析

基本信息

批准号：
1653676
负责人：
Shelby Hutchens
金额：
$ 50万
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：
2017
资助国家：
美国
起止时间：
2017-06-01 至 2023-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1653676&HistoricalAwards=false
关键词：
CAREER Measurement Analysis Osmosis Mediated

项目摘要

This Faculty Early Career Development (CAREER) award will describe the physico-chemo-hydromechanical behavior of closed-cell fluid-solid composites under the regime of osmosis-driven motion. The plant kingdom quietly and efficiently goes about its life without the aid of muscle tissue. Despite this lack, plants can produce large and even rapid movements using water as the driving force. These movements enable energy harvesting. This award supports research efforts that use this osmosis-driven motion as inspiration. In leveraging plant architectures, the synthetic plant-tissue-analogs resulting from these efforts will provide a non-toxic, energy efficient, and tailored response. Simultaneously, such materials would require no connection to an external power support when used in water. The anticipated response of these hydraulic structures may be tuned to provide response variation as a function of both time and position. Responses such as these are essential for many tissue therapies and will benefit society via applications in healthcare and biomechanics. Further, the fundamental efforts supported by this award will enrich understanding of the hydraulic response of plants, a necessary component of detailed climate models. Educational activities for STEM outreach to young female athletes at sport camps will also be developed and extracurricular seminars on communication/rhetoric for scientific presentations will be established in collaboration with an English professor at the University of Illinois.The research team will develop a constitutive model for this currently undescribed class of materials by building on existing theories of poroelasticity for solids capable of finite deformation. Models will be informed by experiments on synthetic plant-tissue-analogs architected for a homogeneous deformation response when immersed in an aqueous environment. As validation of the final model, dynamically and/or inhomogeneously-deforming, architected composites will be designed and fabricated with an aim toward metastable, hierarchical self-assembled structures. In successfully modeling these materials, this work will fill an existing gap in the understanding of 'water relations' in plant tissue. Specifically, by controlling material and surface properties via engineered water-solid composites, this work will resolve an ongoing debate regarding inter- and intra-cellular water flow pathways and their dependence on the osmotic and hydrostatic pressure within the cells.

这项教师早期职业发展（职业）奖将描述闭孔流体 - 固定复合材料在渗透驱动的运动方面的物理化合物 - 溶质机械行为。植物王国在没有肌肉组织的帮助下悄悄地有效地延续了其生命。尽管缺乏这种缺乏，植物仍可以使用水作为驱动力产生大型甚至快速的运动。这些运动可以收获能量。该奖项支持使用这种渗透驱动的运动作为灵感的研究工作。在利用植物体系结构时，由这些努力产生的合成植物 - 组织 - 动物分析将提供无毒，节能和量身定制的反应。同时，在水中使用时，这种材料将不需要与外部电源支撑的连接。这些液压结构的预期响应可以调整以提供响应变化，这是时间和位置的函数。诸如此类的反应对于许多组织疗法至关重要，将通过医疗保健和生物力学的应用使社会受益。此外，该奖项支持的基本努力将丰富对植物的液压反应的理解，这是详细气候模型的必要组成部分。 Educational activities for STEM outreach to young female athletes at sport camps will also be developed and extracurricular seminars on communication/rhetoric for scientific presentations will be established in collaboration with an English professor at the University of Illinois.The research team will develop a constitutive model for this currently undescribed class of materials by building on existing theories of poroelasticity for solids capable of finite deformation.模型将通过对浸入水性环境中的合成植物 - 组织 - 组织 - 阿纳尔格的均匀变形响应进行实验来告知模型。作为对最终模型的验证，将设计和制造构建的复合材料，以动态和/或不均匀的形式形成，旨在旨在旨在旨在地稳态，分层自组装结构。在成功建模这些材料时，这项工作将填补对植物组织中“水关系”的理解的现有空白。具体而言，通过通过工程水固化复合材料来控制材料和表面特性，这项工作将解决有关细胞间和细胞内水流途径的持续辩论，以及它们对细胞内渗透和静水压力的依赖。