新型炭材料Issue(6)：475-479,5.
电润湿作用下水在石墨烯表面流动的边界滑移及界面摩擦
Boundary slip and interfacial friction properties of confined-water flow on graphene under electrowetting
摘要
Abstract
The boundary slip and interfacial friction properties of confined-water flow on two parallel single-layer graphene sheets with a separation of 6 nm under electrowetting conditions were investigated by molecular dynamics simulation and boundary slip the-ory. For both electrowetted and uncharged graphenes, the flow velocity profiles perpendicular to the flow direction, shear stress, boundary slip velocity, slip length and interfacial friction coefficient were obtained with a graphene-water Couette flow model. Re-sults show that the slip length increases abruptly when the shear rate is above a critical value. The critical shear rate in the elec-trowetted graphenes is obviously larger than that in uncharged ones. The interfacial friction coefficient between graphene and water decreases with the shear rate and is increased by electrowetting the graphenes. The water viscosity is independent of the shear rate in both eletrowetted and uncharged graphenes.关键词
石墨烯/电润湿/水/边界滑移/界面摩擦Key words
Graphene/Electrowetting/Water/Boundary slip/Interfacial friction分类
化学化工引用本文复制引用
张忠强,叶宏飞,程广贵,郑勇刚,丁建宁,凌智勇..电润湿作用下水在石墨烯表面流动的边界滑移及界面摩擦[J].新型炭材料,2013,(6):475-479,5.基金项目
国家自然科学基金(11102074,51005103,11302037,11272003) （11102074,51005103,11302037,11272003）
江苏省自然科学基金( BK2011463) （ BK2011463）
中国博士后基金(2011M501169)及特别资助(2013T60503) （2011M501169）
江苏大学高级专业人才启动基金(11JDG024).@@@@National Natural Science Foundation of China (11102074,51005103,11302037,11272003) （11JDG024）
Natural Science Foundation of Jiangsu Province ( BK2011463) （ BK2011463）
China Postdoctoral Science Foundation (2011M501169,2013T60503) （2011M501169,2013T60503）
Initial Funding of Jiangsu University (11JDG024) （11JDG024）
