SGER: Experimental Study on Controllable Interfacial Properties in Nanoenvironments

SGER：纳米环境中可控界面性质的实​​验研究

• 批准号: 0503910
• 负责人: Yu Qiao
• 金额: $ 4.5万
• 依托单位: University of Akron
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-02-15 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0503910&HistoricalAwards=false
• 关键词: SGER; Experimental; Study; Controllable; Interfacial

Abstract: SGER proposal CMS-0503910Conventional surface/interface theories and microfluid mechanics have failed in explaining the experimental results of forced absorption of nanoporous materials. The predicted infiltration pressure could be several times lower than the measured data, and the pore size dependence on the hysteresis of absorption isotherms could not be captured at all. This poses significant challenges in applying nanoporous materials in important fields such as energy storage, energy absorption, processing of new materials, advanced actuators, environmental engineering, etc. Currently, the study in this area is at its early stage. The experimental data of the infiltration pressure and absorption effectiveness are scarce. The limited testing results obtained from different research teams are often contradictory to each other, primarily due to the lack of accurate control of environmental factors. In view of the above considerations, the investigator is proposing a one-year exploratory experimental research on the behavior of liquids confined in nanopores under various conditions. A number of promising systems will be investigated. Both quasi-static and dynamic infiltration behavior will be analyzed. The system performance, as characterized by the infiltration pressure, degree of hysteresis, and the displacement, will be related to control variables including temperature and potential difference. The optimum surface treatment techniques and chemical admixtures will be identified. The proposed study not only promises to lead to the development of advanced mechanical elements with high energy densities, large displacements, and simple structures, but also will shed light on the fundamental mechanisms and processes that govern interfacial properties in nanoscale environments. A number of students will be actively involved in the project and acquire comprehensive research experience. Results of this study will have significant impacts on the syllabuses on subjects of mechanics and materials.

摘要：SGER提案CMS-0503910传统的表面/界面理论和微流体力学未能解释纳米多孔材料强制吸收的实验结果。预测的渗透压力可能比测量数据低几倍，并且完全不能捕获吸附等温线滞后对孔径的依赖性。 这对纳米多孔材料在储能、吸能、新材料加工、先进驱动器、环境工程等重要领域的应用提出了重大挑战。目前，这一领域的研究还处于早期阶段。渗透压力和吸收效率的实验数据很少。 从不同研究团队获得的有限测试结果往往相互矛盾，主要是由于缺乏对环境因素的准确控制。鉴于上述考虑，研究人员正在提出一项为期一年的探索性实验研究，研究各种条件下限制在纳米孔中的液体的行为。将对一些有前途的系统进行研究。准静态和动态的渗透行为将进行分析。系统的性能，其特征在于渗透压力，程度的滞后，和位移，将有关的控制变量，包括温度和电位差。将确定最佳的表面处理技术和化学外加剂。 这项研究不仅有望开发出具有高能量密度、大位移和简单结构的先进机械元件，而且还将揭示在纳米级环境中控制界面特性的基本机制和过程。 一些学生将积极参与该项目，并获得全面的研究经验。 本研究的结果将对力学和材料学科的教学大纲产生重要的影响。