TY - JOUR
T1 - Dynamically Actuated Liquid-Infused Poroelastic Film with Precise Control over Droplet Dynamics
AU - Oh, Inkyu
AU - Keplinger, Christoph
AU - Cui, Jiaxi
AU - Chen, Jiehao
AU - Whitesides, George M.
AU - Aizenberg, Joanna
AU - Hu, Yuhang
N1 - Funding Information:
This work was supported by the funding from the Department of Energy, Office of Basic Energy Sciences, Award #: DE-SC0005247. Dr. Y. Hu would also like to acknowledge the funding from National Science Foundation under Grant No. 1554326, and by the Air Force Office of Scientific Research under award number FA9550-17-1-0295. The authors thank Professor R. H. Ewoldt for the help with the high-speed images in his rheology lab.
Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/9/26
Y1 - 2018/9/26
N2 - Traditional dynamic adaptive materials rely on an atomic/molecular mechanism of phase transition to induce macroscopic switch of properties, but only a small number of these materials and a limited responsive repertoire are available. Here, liquid as the adaptive component is utilized to realize responsive functions. Paired with a porous matrix that can be put in motion by an actuated dielectric elastomer film, the uncontrolled global flow of liquid is broken down to well-defined reconfigurable localized flow within the pores and conforms to the network deformation. A detailed theoretical and experimental study of such a dynamically actuated liquid-infused poroelastic film is discussed. This system demonstrates its ability to generate tunable surface wettability that can precisely control droplet dynamics from complete pinning, to fast sliding, and even more complex motions such as droplet oscillation, jetting, and mixing. This system also allows for repeated and seamless switch among these different droplet manipulations. These are desired properties in many applications such as reflective display, lab-on-a-chip, optical device, dynamic measurements, energy harvesting, and others.
AB - Traditional dynamic adaptive materials rely on an atomic/molecular mechanism of phase transition to induce macroscopic switch of properties, but only a small number of these materials and a limited responsive repertoire are available. Here, liquid as the adaptive component is utilized to realize responsive functions. Paired with a porous matrix that can be put in motion by an actuated dielectric elastomer film, the uncontrolled global flow of liquid is broken down to well-defined reconfigurable localized flow within the pores and conforms to the network deformation. A detailed theoretical and experimental study of such a dynamically actuated liquid-infused poroelastic film is discussed. This system demonstrates its ability to generate tunable surface wettability that can precisely control droplet dynamics from complete pinning, to fast sliding, and even more complex motions such as droplet oscillation, jetting, and mixing. This system also allows for repeated and seamless switch among these different droplet manipulations. These are desired properties in many applications such as reflective display, lab-on-a-chip, optical device, dynamic measurements, energy harvesting, and others.
KW - dynamic droplet control
KW - liquid-infused surfaces
KW - responsive materials
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U2 - 10.1002/adfm.201802632
DO - 10.1002/adfm.201802632
M3 - Article
AN - SCOPUS:85052464713
SN - 1616-301X
VL - 28
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 39
M1 - 1802632
ER -