【摘 要】
：
The fabrication and utilization of micro-fluidic chips require deep insights into nanofluidics.In spite of the numerical theoretical research on relationship of interface wettability and slip length,t
【机 构】
：
School of Electrical and Mechanical Engineering,Xidian University,Xi'an,710071,China;Department of
论文部分内容阅读
The fabrication and utilization of micro-fluidic chips require deep insights into nanofluidics.In spite of the numerical theoretical research on relationship of interface wettability and slip length,the studies on quantitative relationship and the fluid property itself are rarely discussed.Based on the method of molecular dynamics,the effects of interface wettability and fluid properties on nanoflow characteristics also solid-liquid interface slip length are demonstrated through modulating the parameters of Lennard-Jones (L-J) potentials those describing the interfacial wettability of Poiseuille flow in nanochannel.The simulation results manifest that different potential interaction parameters can clearly affect the flow pattern in nanochannel behaving great changes in density and velocity profiles.It is observed that low energy parameters and large distance parameters of L-J potential interactions between solid and liquid atoms results in hydrophobic interfaces and improves the boundary slip on the interface and the velocity in the channel.The similar results can be found as the potential function parameters between liquid atoms vary,the density and velocity curves can dramatically deviate from normal distribution as distance parameters of liquid atoms vary too much,while the slip phenomenon behaves nearly no change with the energy parameters between liquids,showing almost the same velocity slip.Furthermore,the dependence of slip length on potential function parameters is predicted through data fitting and the relationship is established in equation.It can be concluded that the slip length on the interface exponentially changes with potential parameters of wall-fluid,which could be useful for the design and simulation of future micro/nano-fluidic systems.
其他文献
目的：本文探讨猪、牛、羊肉质构特性和肌纤维差异.方法：采用剪切力仪和质构仪测定猪、牛、羊肉剪切力和各项质构参数,环境扫描电镜和原子力显微镜表征三者肌纤维和肌原纤维形貌特征.结果：牛、羊肉剪切力均显著高于猪肉(p＜0.05),牛肉高于羊肉,但二者无显著差异(p＞0.05);牛、羊肉位移应力显著高于猪肉(p＜0.01),牛肉则显著高于羊肉(p＜0.05);牛肉硬度显著高于猪肉和羊肉(p＜0.01),羊
凉山半细毛羊的生产,主要目的是为市场提供优质的羊肉和羊毛产品,从而使生产者获得较好效益.因此,提高凉山半细毛羊高效繁育与经济效益主要从提高凉山半细毛羊繁殖力、受胎率、羔羊成活率、产毛量和产肉性能五方面下功夫.提高凉山半细毛羊繁殖力要做好选种选配工作、进行母羊的催情补饲、选择适龄公母羊繁殖等工作。提高绵羊受胎率要做好提高适龄母羊在羊群中的比例、加强母羊空怀期的饲养管理、在绵羊的繁殖季节配种等工作。提
As a typical kinds of toxic gases,CO plays an important role in environmental monitoring,control of chemical processes,space missions,agricultural and medical applications.Graphene is considered a pot
Generally,the 3ω method for the measurement of fluid thermal properties is based on an approximate solution to heat conduction model assuming vanishing heater-thickness,no dielectric layer and infinit
Thin-film Au electrodes prepared by magnetron sputtering method were used to develop a potentiometric CO2 gas sensor.The thermal evaporated Li3PO4 played the role of electrolyte and sensing material.T
Surface Acoustic Wave (SAW) sensors and micro-electromechanical system (MEMS) technology provide a promising solution for measurement in harsh environments such as gas turbines.In this paper,a SAW res
The temperature sensor presented herein based on microwave dielectric resonator,using alumina ceramic as substrate to survive in harsh environment.The resonant frequency of resonator is determined by
This paper reports fabrication and characterization of ZnO nanotubes on Au cylindrical spirals.Highly oriented single-crystalline ZnO nanorods were hydrothermally synthesized on Au cylindrical spirals
Low temperature process is important for capacitive micromachined ultrasonic transducers (CMUTs) to integrate with integrated circuits (ICs) in order to reduce parasitic capacitance and improve its de
In this study,oriented rutile TiO2nanorod arrays (NRAs) were directly grown on the titanium (Ti) thin films deposited on the Si substrate in a low concentration of hydrochloric acid aqueous solution v