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. 2012 Sep 11;24(35):4756-60.
doi: 10.1002/adma.201201885. Epub 2012 Jul 26.

Remotely controllable liquid marbles

Lianbin Zhang  1 , Dongkyu Cha, Peng Wang
Affiliations

Remotely controllable liquid marbles

Lianbin Zhang et al. Adv Mater. .
No abstract available

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Figures

Figure 1
Figure 1
a) Schematic showing the preparation strategy for core/shell structured responsive magnetic particles. b–e) TEM images of Fe3O4 particles (b), Fe3O4@nSiO2@mSiO2 particles (c), and RMPs (d,e). Inset in (b): Enlarged TEM image of a single Fe3O4 particle. TEOS: Tetraethyl orthosilicate.
Figure 2
Figure 2
a) Hydrodynamic diameter (dotted-dashed line) and zeta potential (solid line) of the RMPs as a function of the pH of the water. b) Digital photograph showing the dispersion of the RMPs in water of pH 2.0 and 6.5.
Figure 3
Figure 3
a) Schematic showing a liquid marble composed of an encapsulated water droplet and hydrophobic RMPs. b,c) Digital photographs showing the liquid marbles placed on a glass slide (b) and water surface (c). The liquid marbles were prepared using 10–15 μL water of pH 6.5. d) Snapshots showing controlled movement of the liquid marble floating on the water surface in response to an external magnetic field. e) Snapshots showing the rupture of the liquid marble (15 μL) placed on the water surface after addition of concentrated HCl. The final pH of the solution in the Petri dish is ∼1.8.
Figure 4
Figure 4
a) Snapshots showing the UV-triggered rupture of the liquid marble prepared from PAG-loaded RMPs. As a comparison, the liquid marble prepared from PAG-free RMPs remained unchanged even after extended UV illumination. b) Schematic showing the UV-triggered hydrophilic transition of the PAG-loaded RMPs.
See this image and copyright information in PMC

References

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