SGER: Experimental Study on Controllable Interfacial Properties in Nanoenvironments

摘要：SGER建议CMS-0503910传统的表面/界面理论和微流体力学不能解释纳米多孔材料强迫吸收的实验结果。预测的渗透压力可能比实测值低好几倍，而且根本不能捕捉到孔径对吸附等温线滞后的依赖关系。这给纳米多孔材料在储能、吸能、新材料加工、先进致动器、环境工程等重要领域的应用带来了巨大的挑战。目前，这方面的研究还处于起步阶段。关于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的测试结果往往相互矛盾，主要原因是缺乏对环境因素的准确控制。鉴于上述考虑，研究人员提议对纳米孔中的液体在不同条件下的行为进行为期一年的探索性实验研究。将对一些有希望的系统进行调查。对准静态和动态入渗行为进行了分析。以渗透压力、滞后程度和位移为特征的系统性能将与包括温度和电位差在内的控制变量有关。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能量密度高、位移大、结构简单的先进机械元件，而且还将揭示纳米环境中控制界面性质的基本机制和过程。许多学生将积极参与该项目，并获得全面的研究经验。这项研究的结果将对力学和材料学科的教学大纲产生重大影响。

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.