Robotic Materials Article 2018

Dynamically actuated liquid‐infused poroelastic film with precise control over droplet dynamics

Thumb ticker sm keplinger christoph geringauflo  send
Robotic Materials, Physical Intelligence
Managing Director

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.

Author(s): Inkyu Oh and Christoph Keplinger and Jiaxi Cui and Jiehao Chen and George M Whitesides and Joanna Aizenberg and Yuhang Hu
Journal: Advanced Functional Materials
Volume: 28
Number (issue): 39
Pages: 1802632
Year: 2018
Month: September
Bibtex Type: Article (article)
DOI: 10.1002/adfm.201802632
URL: https://onlinelibrary.wiley.com/doi/pdf/10.1002/adfm.201802632
Electronic Archiving: grant_archive

BibTex

@article{Keplinger18-AFM-Dynamically,
  title = {Dynamically actuated liquid‐infused poroelastic film with precise control over droplet dynamics},
  journal = {Advanced Functional Materials},
  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.},
  volume = {28},
  number = {39},
  pages = {1802632},
  month = sep,
  year = {2018},
  slug = {keplinger18-afm-dynamically},
  author = {Oh, Inkyu and Keplinger, Christoph and Cui, Jiaxi and Chen, Jiehao and Whitesides, George M and Aizenberg, Joanna and Hu, Yuhang},
  url = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/adfm.201802632},
  month_numeric = {9}
}