Optical trapping of interfaces at ultra-low interfacial tension.
Optical trapping of interfaces at ultra-low interfacial tension.
复制标题
超低界面张力下界面的光捕获。
作者：
A. Verhoeff;François A. Lavergne;Denis Bartolo;D. Aarts;R. Dullens
我们通过使用平行于界面的强聚焦激光束的梯度力对界面进行光学捕获来实现对界面现象的主动控制。我们通过以非常受控的方式扭曲界面来说明我们在相分离的胶体-聚合物混合物中的技术。分析了操纵界面的静态结构及其动态松弛行为。静力学和动力学都可以使用波动耗散定理与毛细波高度-高度相关函数相关，直至界面出现惊人的大变形。为了强调我们方法的新颖性和潜力，我们还展示了多种界面扭曲和液滴的受控折断。
We achieve active control of interfacial phenomena by optically trapping the interface using the gradient forces of a strongly focussed laser beam parallel to the interface. We illustrate our technique in a phase separated colloid-polymer mixture by distorting the interface in a very controlled way. The static structure of the manipulated interface as well as its dynamic relaxation behaviour are analysed. Both the statics and dynamics can be related to the capillary wave height-height correlation functions using the fluctuation dissipation theorem up to surprisingly large deformations of the interface. To underline the novelty and potential of our approach we also show multiple interface distortions and the controlled snap-off of liquid droplets.
影响因子：
3.8
作者：
Tapp D
通讯作者：
Tapp D