| 查看: 1569 | 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 | |||
[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
面上意见出来了
已经有21人回复
-
能否申诉？
已经有8人回复
-
梦想
已经有5人回复
-
中青基了要发朋友圈吗？
已经有7人回复
-
有多少人是今天查系统知道结果的？
已经有19人回复
-
29号明天会评吗
已经有4人回复
-
国社科又开始会评了，不知道这次命运如何
已经有10人回复
-
基金不中，共勉
已经有12人回复
-
为什么到现在没收到通知？
已经有5人回复
-
有没有仍没收到信息的
已经有8人回复
» 抢金币啦！回帖就可以得到:
-
云南大学丁军桥团队2027年博士招生
+1/945
-
八年奋战，面上中了，同时一个读了8年的博士（中途接手）答辩通过了，都是涉险过关
+2/342
-
天平合规性问题
+1/101
-
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
+1/91
-
原子层沉积（ALD）磁控溅射PECVD等微纳代工服务：18817872921
+1/91
-
东南大学能源与环境学院-林日琛教授课题组-27级博士招生
+1/87
-
东南大学能源与环境学院-林日琛教授课题组-27级博士招生
+1/85
-
征友避雷上海【荀玄武】
+1/77
-
今日少年明日老。
+1/70
-
深圳大学刘翼振课题组诚聘博士后（CRISPR分子诊断）
+1/36
-
中南大学化学化工学院喻桂朋教授团队诚聘博士后（复合材料方向）
+1/36
-
中南大学化学化工学院喻桂朋教授团队诚聘博士后（复合材料方向）
+1/19
-
四川大学高分子学院、空天学院招收研究助理
+1/17
-
中南大学化学化工学院喻桂朋教授团队诚聘博士后（复合材料方向）
+1/13
-
湖南大学张旺课题组招收推免硕士
+1/9
-
湖南大学张旺课题组招收研究助理
+1/7
-
多重蛋白检测定量技术赋能心血管疾病基础与转化研究
+1/4
-
中国科学院广州生物医药与健康研究院课题组招收博士研究生1名（2027年9月入学）
+1/4
-
抗体筛选研发岗位
+1/3
-
课题快结题了才发现没东西可申请专利？四个维度帮你挖一挖
+1/2
3楼2021-01-20 22:17:58
11楼2021-01-21 19:49:49
12楼2021-01-23 10:58:27
48楼2021-01-27 15:40:32
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
2021-01-20 23:53
回复
gentle_boy(金币+1): 谢谢参与
2021-01-21 00:53
回复
gentle_boy(金币+1): 谢谢参与
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
2021-01-21 09:08
回复
gentle_boy(金币+1): 谢谢参与
nono20098楼
2021-01-21 10:16
回复
gentle_boy(金币+1): 谢谢参与
·
2021-01-21 11:12
回复
BiotageAB10楼
2021-01-21 17:02
回复
gentle_boy(金币+1): 谢谢参与
slytjiaofei13楼
2021-01-23 15:11
回复
shenrenren14楼
2021-01-24 08:37
回复
gentle_boy(金币+1): 谢谢参与
slytjiaofei15楼
2021-01-24 11:39
回复
gter_wang16楼
2021-01-24 17:27
回复
gentle_boy(金币+1): 谢谢参与
guanlianwu17楼
2021-01-26 11:05
回复
gentle_boy(金币+1): 谢谢参与
yaqianye18楼
2021-01-26 15:20
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
蓉蓉番薯19楼
2021-01-26 15:20
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
likecitywo20楼
2021-01-26 15:20
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
icanspll21楼
2021-01-26 15:20
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
zzhello22楼
2021-01-26 15:21
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
howtoge23楼
2021-01-26 15:21
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
gofast11224楼
2021-01-26 15:21
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
Haibo_25楼
2021-01-26 15:22
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
shehuifei26楼
2021-01-26 15:24
回复
gentle_boy(金币+1): 谢谢参与
。 发自小木虫Android客户端
蓉蓉番薯27楼
2021-01-26 23:13
回复
yaqianye28楼
2021-01-26 23:16
回复
icanspll29楼
2021-01-26 23:16
回复
likecitywo30楼
2021-01-26 23:16
回复
gofast11231楼
2021-01-26 23:18
回复
zzhello32楼
2021-01-26 23:19
回复
shehuifei33楼
2021-01-26 23:19
回复
howtoge34楼
2021-01-26 23:19
回复
Haibo_35楼
2021-01-26 23:19
回复
syhorchid36楼
2021-01-27 00:35
回复
gentle_boy(金币+1): 谢谢参与
zslzqd37楼
2021-01-27 08:52
回复
gentle_boy(金币+1): 谢谢参与
slytjiaofei38楼
2021-01-27 10:15
回复
蓉蓉番薯39楼
2021-01-27 14:12
回复
likecitywo40楼
2021-01-27 14:15
回复
zzhello41楼
2021-01-27 14:15
回复
gofast11242楼
2021-01-27 14:17
回复
icanspll43楼
2021-01-27 14:17
回复
howtoge44楼
2021-01-27 14:17
回复
yaqianye45楼
2021-01-27 14:18
回复
Haibo_46楼
2021-01-27 14:20
回复
shehuifei47楼
2021-01-27 14:23
回复
bjdxyxy49楼
2021-01-27 15:45
回复
蓉蓉番薯50楼
2021-01-27 22:10
回复
