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Three-Dimensional Multifunctional Magnetically Responsive Liquid Manipulator Fabricated by Femtosecond Laser Writing and Soft Transfer.
Nano Letters ( IF 9.6 ) Pub Date : 2020-09-11 , DOI: 10.1021/acs.nanolett.0c02997 Shaojun Jiang 1 , Yanlei Hu 1 , Hao Wu 1 , Rui Li 1 , Yiyuan Zhang 1 , Chao Chen 1 , Cheng Xue 1 , Bing Xu 1 , Wulin Zhu 1 , Jiawen Li 1 , Dong Wu 1 , Jiaru Chu 1
Nano Letters ( IF 9.6 ) Pub Date : 2020-09-11 , DOI: 10.1021/acs.nanolett.0c02997 Shaojun Jiang 1 , Yanlei Hu 1 , Hao Wu 1 , Rui Li 1 , Yiyuan Zhang 1 , Chao Chen 1 , Cheng Xue 1 , Bing Xu 1 , Wulin Zhu 1 , Jiawen Li 1 , Dong Wu 1 , Jiaru Chu 1
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Nature-inspired magnetically responsive intelligent topography surfaces have attracted considerable attention owing to their controllable droplet manipulation abilities. However, it is still challenging for magnetically responsive surfaces to realize three-dimensional (3D) droplet/multidroplet transport in both horizontal and vertical directions. Additionally, the droplet horizontal propulsion speed needs to be improved. In this work, a 3D droplet/multidroplet transport strategy based on magnetically responsive microplates array (MMA) actuated by a spatially varying and periodic magnetic field is proposed. The modified superhydrophobic surface can transport droplets rapidly both in horizontal and vertical directions, and it can even realize against-gravity upslope propulsion. The rapid horizontal droplet propulsion (∼58.6 mm/s) is ascribed to the abrupt inversion of the modified surface induced by the specific magnetic field. Furthermore, the nonmagnetically responsive microplates (NMMs)/MMA composite surface is constructed to realize 3D multidroplet manipulation. The implementations of MMA in manipulation of continuous fluids and liquid metal are further demonstrated, providing a valuable platform for microfluidic applications.
中文翻译：
飞秒激光写入和软转移制造的三维多功能磁响应液体操纵器。
受自然启发的磁响应智能形貌表面由于其可控的液滴操纵能力而备受关注。但是，对于磁性响应表面而言，在水平和垂直方向上实现三维（3D）液滴/多液滴传输仍然是一项挑战。另外，液滴水平推进速度需要提高。在这项工作中，提出了一种基于由空间变化和周期性磁场驱动的磁响应微板阵列（MMA）的3D液滴/多液滴运输策略。改性的超疏水表面可以在水平和垂直方向上快速输送液滴，甚至可以实现反重力上坡推进。水平液滴的快速推进（〜58。6mm / s）归因于由特定磁场引起的改性表面的突然反转。此外，非磁性响应微孔板（NMM）/ MMA复合表面的构造可实现3D多液滴操作。MMA在连续流体和液态金属的处理中的实现得到了进一步的证明，为微流体应用提供了有价值的平台。
更新日期：2020-10-15
中文翻译：
飞秒激光写入和软转移制造的三维多功能磁响应液体操纵器。
受自然启发的磁响应智能形貌表面由于其可控的液滴操纵能力而备受关注。但是，对于磁性响应表面而言，在水平和垂直方向上实现三维（3D）液滴/多液滴传输仍然是一项挑战。另外，液滴水平推进速度需要提高。在这项工作中，提出了一种基于由空间变化和周期性磁场驱动的磁响应微板阵列（MMA）的3D液滴/多液滴运输策略。改性的超疏水表面可以在水平和垂直方向上快速输送液滴，甚至可以实现反重力上坡推进。水平液滴的快速推进（〜58。6mm / s）归因于由特定磁场引起的改性表面的突然反转。此外，非磁性响应微孔板（NMM）/ MMA复合表面的构造可实现3D多液滴操作。MMA在连续流体和液态金属的处理中的实现得到了进一步的证明，为微流体应用提供了有价值的平台。
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