| 查看: 1576 | 回复: 57 | |||
| 【有奖交流】积极回复本帖子，参与交流，就有机会分得作者 gentle_boy 的 76 个金币 ，回帖就立即获得 1 个金币，每人有 1 次机会 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
[交流]
法国波尔多大学 LOMA实验室 公派读博-2021 zhangzaicheng8911@163.com
|
|||
|
PhD thesis proposal: Electrohydrodynamic lift force Supervisor: Prof. Alois Würger Contact: alois.wurger@u-bordeaux.fr Nanoscale flows of electrolytes in confined geometry are of primary importance for active matter, energy storage devices, harvesting of waste energy, desalinization, and actuation and signal detection in micromechanical systems. Surface properties are predominant for the flow behavior and the transport properties in these systems . The coupling of the diffuse layer of counter-ions to liquid flow is at the origin of various electro-kinetic and visco-electric effects, leading to several applications ranging from microfluidics to medical analy-sis. Electro-hydrodynamic coupling has been suggested as an alternative approach to lubrica-tion, which depends on the non-equilibrium properties of the electric double layer. Indeed, advection of the diffuse layer results in an additional dynamic electric disjoining pressure, which may by far exceed the electrostatic repulsion and induce a normal force on a sphere moving along a surface. The velocity profile consists of a linear shear flow and a backward Poiseuille flow, as sketched in the figure for pure water. Since the velocity diminishes with radial distance, advection in the Poiseuille flow tends to accumulate counter-ions at the back side of the sphere, thus generating an electric field parallel to the surface and thus a lift force perpendicular to the velocity. Colloidal Probe Atomic Force Microscope (AFM) have shown their ability to probe accurately the electrostatic properties of surfaces, such as sur-face charge and potential, by measuring the equilibrium interaction force between confined Electrostatic Double Layers (EDL). They have also shown their unique power to unravel the hydrodynamics at solid/liquid interfaces. This is a collaborative project with the group of Dr Abdelhamid Maali at LOMA. The main objective is a comprehensive study, both experimentally and theoretically, of the dynamic coupling between the electric double layer to fluid flow. More precisely, we will investigate the visco-elastic and electro-dynamic response to lateral oscillations of the substrate, and in particular we will measure the lift force perpendicular to the motion. Since the force de-pends on the square value of the velocity, it comprises a static component and one oscillat-ing at twice the driving frequency. The former is obtained by measuring the time-averaged force. We will study both of these two components and their dependence versus distance, viscosity and salinity of the solutions and frequency of the lateral oscillations. |
回复此楼» 猜你喜欢
面上函评意见出来了，像什么等级？
已经有17人回复
-
为什么国自然不能直接公布
已经有5人回复
-
梦想
已经有7人回复
-
学科评审组评审是指会评吗？
已经有4人回复
-
面上合作单位盖章
已经有8人回复
-
为什么资助数各大高校都创新高，自己申请怎么就这么难
已经有14人回复
-
小白求助 投论文要求的highlights应该如何写
已经有4人回复
-
麻烦专家们看看评委们的意见（F口面上）
已经有12人回复
-
怎么看青基中了没有啊
已经有6人回复
-
国社科又开始会评了，不知道这次命运如何
已经有11人回复
» 抢金币啦！回帖就可以得到:
-
【IEEE列表会议征稿 】2026年第六届控制理论与应用国际会议（ICoCTA 2026）
+5/840
-
云南大学丁军桥团队2027年博士招生
+1/811
-
优质男征女友
+1/467
-
2027级博士研究生——质谱分析
+5/125
-
【以色列理工学院全额奖学金硕博士招生】王燕课题组 · 柔性生物界面实验室
+2/108
-
天平合规性问题
+1/91
-
锡基钙钛矿｜超低水氧惰性环境，解锁无铅光伏技术攻关路径
+1/90
-
【半导体薄膜代工】ALD/CVD/磁控溅射/热蒸发全工艺
+1/88
-
南方科技大学刘科院士团队诚聘矿物浮选分离方向研究助理
+1/83
-
大湾区大学刘天辉课题组招收2027级博士生（与中山大学物理学院联合培养）
+1/36
-
double accept!!
+5/35
-
山东大学-山东字节信息智能技术实验室2026年招聘博士后
+2/20
-
评职称需要，卖发明专利了:D有技术储备需求的设备厂商可联系
+1/19
-
浙江大学物理高等研究院袁怀洋课题组诚聘博士和博士后
+1/14
-
中国药科大学陈达威课题组招收2027年博士研究生 （药理学）
+1/6
-
【科研诚信】武汉轻工大学何江玲3篇论文：涉嫌抄袭、成组数据重复、制造虚假显著
+1/5
-
义翘神州推出全长p-Tau217蛋白，助力阿尔茨海默病下一代生物标志物检测开发
+1/5
-
结肠炎多维度分子解析：炎症‑免疫‑肠道屏障一体化检测策略
+1/4
-
项目助理招聘启事
+1/2
-
义翘神州TR-FRET激酶检测试剂盒助力高通量药物筛选
+1/1
48楼2021-01-27 15:40:32
3楼2021-01-20 22:17:58
简单回复
bjdxyxy2楼
2021-01-20 21:48
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
tzynew6楼
2021-01-21 01:10
回复
gentle_boy(金币+1): 谢谢参与
9 发自小木虫Android客户端
