Technical Papers and Presentations

Model calibration and validation were implemented using experimental data from literature. We utilized a microfluidic electrochemical cell that was configured with parallel, rectangular, and multi-layered channels, which is operating in a co-flow mode. CO2 gas stream enters the cathode ... Read More

From microelectronics cooling to biological analysis and wearable therapeutic infusion systems, micropumps are steadily becoming a valuable and ubiquitous tool for fluid transport and thermal management. Hence, the development of novel actuation mechanisms that allow for precise ... Read More

NASA’s future human exploration missions will require chemical processing plants to convert local resources into consumables to support astronaut activities [1]. The thin and mostly carbon dioxide atmosphere of Mars is estimated to have 5 – 10 particles/cm3 with diameter of 3.2 – 5 μm ... Read More

Electrochemical systems are devices or processes in which an ionic conductor mediates the interconversion of chemical and electrical energy. This paper presents a model to simulate the electroplating of copper in a microcavity typically found in the plating of copper onto circuit ... Read More

Introduction Oversized microbubbles traveling through confining conduits can create flow blockages when the lubrication layer surrounding them drains, requiring undesirable increases in pressure gradient for discharging channel contents. In increasingly demanding industrial ... Read More

储氢合金的PCT曲线和氢化动力学性能是描述合金储氢性能的重要标准，目前对合金的PCT曲线测试一般采用体积法，对合金氢化反应动力学的研究一般采用等容差压法。但在实际生产过程中，储氢合金通常是在恒定氢气流速的情况下工作的，所以研究合金在恒定氢气流速条件下的吸氢动力学性能很有必要。与实验相比，采用数值模拟预报合金的吸放氢性能节省了大量的时间和成本，具有突出优势。目前金属Pd及其合金被广泛应用于储氢及氢气纯化等领域，我们通过COMSOL软件建模，构建Pd吸氢热力学与动力学特性模型，选用传热、流体流动、域常微分等物理场模块建立了Pd在恒定氢气流速下吸氢动力学的计算模型 ... Read More

Abstract: The electric field and temperature are the two important factors that influence the fiber diameters and properties in the melt electrospinning process. It is commonly known that the polymer jet behavior is governed by the electric field within spinning area. In the present ... Read More

钻井时,泥浆滤液会在压力差的作用下侵入到渗透性地层,地层水的饱和度与矿化度发生改变,从而测量的电阻率数值偏离地层电阻率。 长方体模拟地层，三个圆分别模拟供电和测量电极，参数设定坐标。 地下水流模块中Two-Phase Darcy’s Law接口模拟泥浆侵入，两相流体密度和黏度，固体孔隙度与绝对渗透率都通过空白材料赋值，地层上下无流动，设定地层初始压力和流体饱和度，左侧边界设定侵入压力和流体饱和度，右侧边界设定出口压力。 化学模块中的Transport of diluted species in porous media计算泥浆侵入后地层水矿化度 ... Read More

新能源是一直备受世界，例如太阳能应用大力改善我们的生活水平，提高科技的发展。然而，在传统上设计太阳能电池，我们只考虑光学设计，通过陷光结构增加光吸收，但是没有考虑电学模块的损耗，在给太阳能电池带来不便。因此，在本项工作中，我们重点研究电池传输层和空穴传输层配置的钙钛矿电池，以发现光学器件和载体设备内的动力学特性以及指导太阳能设计以获得高效率。 通过Comsol Multiphysics @软件以仿真解决电磁响应和载体动态（生成/运输/重组/收集），以及建立多种纳米结构模型，研究不同结构设计纳米结构对钙钛矿光伏电池性能的影响。 意义提高钙钛矿电池光电效率，应用在卫星 ... Read More

生物医疗电子产品成为当前发展的新热点，为了与人体表面皮肤贴合，各种柔性材料用于制备医疗检测器件。其中，PVDF材料拥有良好的柔性、压电性、压阻性和生物相容性，可制备适用于符合人体力学的柔性探测器。PVDF材料具有很大的压电电压常数，微小的形变能产生较大的电势差。利用此特性，可检测颈椎、腰椎和膝关节的运动状况，极大的避免造成人体损伤。 利用Comsol多物理场有限元仿真软件，构建PVDF柔性器件结构，设置驱动材料和电极材料相关参数参数，选取固体力学模块和AC/DC模块，网格化分析求解，量化PVDF柔性器件形变和电压的关系。 comsol有限元分析软件具有多个专业模块 ... Read More