Interface Resistance and Thermal Transport in Nano-Scale Confined Liquids

0931988 Beskok该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。纳米技术和纳米流体的进步需要了解在纳米级外壳或通道中限制的液体中的质量，动量和能量传输。具体地说，存在着一个需要（a）基本的理解和建模的界面（Kapitza）电阻的现实和技术相关的液体-固体界面和（B）确定的限制连续假设的热传输应用涉及纳米尺度限制的液体。智力优势：将研究纳米尺度受限液体中的界面电阻和热传输，目标如下：（a）水-硅、水-石墨、水-铝的液-固界面电阻和Kapitza长度的表征（亲水性）和水金（疏水）界面，（B）上述水-表面对的现象学Kapitza长度模型的发展，和模型验证，使用文献中的实验数据，和（c）探索的范围内的连续假设的有效性在水填充的纳米通道。这项研究将包括开发计算效率高，交互式热壁模型，用于纳米级传热和界面热阻的分子动力学模拟。还将调查的温度跳跃边界条件的纳米流体流动在nanoscale限制geometrics.Broader影响：研究结果将通过演讲，会议和期刊出版物传播。分子动力学模型和代码将提供给公众通过我们的网站与用户？手册.这项研究将支持一个新的博士学位的发展。在PI机构的微和纳米流体跟踪。

0931988BeskokThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Advancements in nanotechnology and nanofluidics require an understanding of mass, momentum and energy transport in liquids confined in nanoscale enclosures or channels. Specifically, there exists a need for (a) fundamental understanding and modeling of the interface (Kapitza) resistances for realistic and technologically relevant liquid-solid interfaces and (b) determination of the limitations of continuum hypotheses for thermal transport applications involving nanoscale-confined liquids. Intellectual Merit: The interface resistance and thermal transport in nanoscale-confined liquids will be investigated with the following objectives: (a) characterization of the liquid-solid interface resistances and Kapitza lengths for water-silicon, water-graphite, water-aluminum (hydrophilic) and water-gold (hydrophobic) interfaces, (b) development of phenomenological Kapitza length models for the aforementioned water-surface pairs, and model validation using experimental data available in the literature, and (c) exploration of the ranges of validity of the continuum hypothesis in water-filled nanochannels. The research will include development of computationally efficient, interactive thermal wall models for molecular dynamics simulations of nanoscale heat transfer and interface thermal resistances. Also investigated will be the temperature jump boundary conditions for nanofluid flow in nanoscale-confined geometries.Broader Impact: Research results will be disseminated through presentations, conference and journal publications. The molecular dynamics model and code will be made available to the public through our web-site with a users? manual. This research will support the development of a new Ph.D. track in micro- and nanofluidics in the PIs institution.