Controlling adhesion using AC electric fields across fluid films.
Controlling adhesion using AC electric fields across fluid films.
复制标题
使用跨流体膜的交流电场控制粘附力。
DOI：
10.1088/1361-648x/ac03d3
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Perez-Martinez CS
中科院分区：
文献类型：
--
作者：
Perez-Martinez CS
我们展示了可逆的和可切换的驱动使用AC电场，使两个表面分开的离子流体薄膜的粘合剂接触和脱离。使用表面力平衡，我们施加电场垂直于一个交叉的圆柱接触和直接测量的粘附力和表面分离的亚分子分辨率。利用振荡的结构力作用在整个流体的表面之间，我们表明不受AC场的影响，我们通过精确调谐的字段之间的不同（量子化）的粘合剂状态。这个概念验证表明使用外部场对表面相互作用的精细控制。
We demonstrate reversible and switchable actuation using AC electric fields to bring two surfaces separated by a thin film of ionic fluid in and out of adhesive contact. Using a surface force balance we apply electric fields normal to a crossed-cylinder contact and measure directly the adhesive force and surface separation with sub-molecular resolution. Taking advantage of the oscillatory structural force acting between the surfaces across the fluid, which we show to be unaffected by the AC field, we pick between the distinct (quantized) adhesive states through precise tuning of the field. This proof-of-concept indicates exquisite control of surface interactions using an external field.