Single and ensemble response of colloidal ellipsoids to a nearby ac electrode
Single and ensemble response of colloidal ellipsoids to a nearby ac electrode
复制标题
胶体椭球体对附近交流电极的单一和整体响应
DOI:
10.1016/j.colsurfa.2020.125384
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Wirth, Christopher L.
中科院分区:
文献类型:
--
作者:
Yan, Jiarui;Rashidi, Aidin;Wirth, Christopher L.
Anisotropic colloids can be used as building blocks for fabricating assemblies with complex microstructure and function. External electric fields are one key tool used to assemble such colloidal structures. Herein, we utilized a parallel plate electrode geometry to drive motion of micrometer scale ellipsoidal colloids. The response of pseudo 2D layers of ellipsoids with systematically altered aspect ratios was measured as a function of electric field strength and frequency. We found there to be a weak dependence of ellipsoid ensemble structure on aspect ratio. Namely, regions of aggregation and separation were only slightly dependent on particle aspect ratio. We found that ellipsoids with a smaller aspect ratio tended to align with the electric field, while high aspect ratio ellipsoids did not in response to an electric field of the magnitude and time scale used herein. In addition, we found the kinetics of aggregation of colloids to be very similar regardless of aspect ratio. Complementary experiments utilizing these data demonstrated long-lasting deposition of ellipsoids in energetically unfavorable orientations, which is being used as a model system for the measurement of light scattered from an evanescent wave by an ellipsoid.
登录
查看更多内容
影响因子:
3.9
作者:
J. Fagan;A. Sides;D. Prieve
通讯作者:
D. Prieve
影响因子:
9.9
作者:
Reza M. Rock;P. Sides;D. Prieve
通讯作者:
D. Prieve
影响因子:
15.6
作者:
Junhyung Kim;S. Guelcher;S. Garoff;J. L. Anderson
通讯作者:
J. L. Anderson
DOI:
10.1021/la070049j
发表时间:
2007
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
作者:
J. Hoggard;P. Sides;D. Prieve
通讯作者:
D. Prieve
DOI:
10.1103/physreve.94.042614
发表时间:
2016
期刊:
Physical review. E
影响因子:
--
作者:
C. Wirth;Sri Harsha Nuthalapati
通讯作者:
Sri Harsha Nuthalapati