Shape-Shifting Droplet Networks

T. Zhang, Duanduan Wan, Jennifer M Schwarz, Mark John Bowick

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We consider a three-dimensional network of aqueous droplets joined by single lipid bilayers to form a cohesive, tissuelike material. The droplets in these networks can be programed to have distinct osmolarities so that osmotic gradients generate internal stresses via local fluid flows to cause the network to change shape. We discover, using molecular dynamics simulations, a reversible folding-unfolding process by adding an osmotic interaction with the surrounding environment which necessarily evolves dynamically as the shape of the network changes. This discovery is the next important step towards osmotic robotics in this system. We also explore analytically and numerically how the networks become faceted via buckling and how quasi-one-dimensional networks become three dimensional.

Original languageEnglish (US)
Article number108301
JournalPhysical Review Letters
Volume116
Issue number10
DOIs
StatePublished - Mar 9 2016

Fingerprint

Lipid Bilayers
Robotics
Molecular Dynamics Simulation
Osmolar Concentration
buckling
robotics
folding
fluid flow
residual stress
lipids
molecular dynamics
gradients
causes
simulation
interactions

ASJC Scopus subject areas

  • Medicine(all)
  • Physics and Astronomy(all)

Cite this

Shape-Shifting Droplet Networks. / Zhang, T.; Wan, Duanduan; Schwarz, Jennifer M; Bowick, Mark John.

In: Physical Review Letters, Vol. 116, No. 10, 108301, 09.03.2016.

Research output: Contribution to journalArticle

Zhang, T. ; Wan, Duanduan ; Schwarz, Jennifer M ; Bowick, Mark John. / Shape-Shifting Droplet Networks. In: Physical Review Letters. 2016 ; Vol. 116, No. 10.
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