Controlled droplet transport to target on a high adhesion surface with multi-gradients.
Controlled droplet transport to target on a high adhesion surface with multi-gradients.
复制标题
受控液滴传输到具有多梯度的高粘附表面上的目标
DOI：
10.1038/srep45687
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发表时间：
2017-04-03
影响因子：
4.6
通讯作者：
Zheng Y
中科院分区：
文献类型：
--
作者：
Deng S;Shang W;Feng S;Zhu S;Xing Y;Li D;Hou Y;Zheng Y
通过特殊的楔形图案和改进的阳极氧化方法，在高附着力表面上引入了包括拉普拉斯压力梯度、压差梯度和压差梯度的多梯度。由于上述协同效应，即使当表面上下颠倒时，也实现了液滴在高粘附表面上的受控定向运动。通过调节楔角和液滴体积，可以预测液滴的运动并控制其运动距离。更有趣的是，当拉普拉斯压力梯度被引入到V形梯度表面上时，两个液滴可以如设计的那样朝向彼此移动。
We introduce multi-gradients including Laplace pressure gradient, wettable gradient and wettable different gradient on a high adhesion surface via special wedge-pattern and improved anodic oxidation method. As a result of the cooperative effect mentioned above, controlled directional motion of a droplet on a high adhesion surface is realized, even when the surface is turned upside down. The droplet motion can be predicted and the movement distances can be controlled by simply adjusting the wedge angle and droplet volume. More interestingly, when Laplace pressure gradient is introduced on a V-shaped wettable gradient surface, two droplets can move toward one another as designed.