DataVXAdvanced Functional MaterialsPaper
journal article·2018-09Open access

Dynamically Actuated Liquid‐Infused Poroelastic Film with Precise Control over Droplet Dynamics

Inkyu Oh, Christoph Keplinger, Jiaxi Cui, Jiehao Chen, George M. Whitesides, Joanna Aizenberg, Yuhang Hu

Advanced Functional Materials· Volume 28· Issue 39
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Source abstract

Abstract

Abstract 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.
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Research context

Polymers

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Surface Modification and Superhydrophobicity · Advanced Materials and Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Mechanical Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA

Department of Mechanical Engineering University of Colorado Boulder CO 80309 USA

Materials Science and Engineering Program University of Colorado Boulder CO 80309 USA

INM – Leibniz Institute for New Materials Campus D2 2 66123 Saarbrücken Germany

Department of Chemistry and Chemical Biology Harvard University Cambridge MA 02318 USA

Wyss Institute for Biologically Inspired Engineering Harvard University Cambridge MA 02138 USA

Kavli Institute for Bionano Science and Technology Harvard University Cambridge MA 02138 USA

John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA

The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA 30332 USA

Funding

U.S. Department of Energy · National Science Foundation · Air Force Office of Scientific Research

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