Tunable superomniphobic surfaces for sorting droplets by surface tension.

@article{Movafaghi2016TunableSS,
  title={Tunable superomniphobic surfaces for sorting droplets by surface tension.},
  author={Sanli Movafaghi and W. Wang and A Metzger and Desiree D. Williams and J. D. Williams and Arun Kumar Kota},
  journal={Lab on a chip},
  year={2016},
  volume={16 17},
  pages={
          3204-9
        }
}
We utilized tunable superomniphobic surfaces with flower-like TiO2 nanostructures to fabricate a simple device with precisely tailored surface energy domains that, for the first time, can sort droplets by surface tension. We envision that our methodology for droplet sorting will enable inexpensive and energy-efficient analytical devices for personalized point-of-care diagnostic platforms, lab-on-a-chip systems, biochemical assays and biosensors. 
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33 Citations
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33 Citations

Fabrication of Nanostructured Omniphobic and Superomniphobic Surfaces with Inexpensive CO2 Laser Engraver.
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It is demonstrated that the nanostructured omniphobic and superomniphobic surfaces fabricated using the laser texturing technique can be used to design patterned surfaces, surfaces with discrete domains of the desired wettability, and on-surface microfluidic devices.
Metamorphic Superomniphobic Surfaces
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It is envisioned that the robust MorphS surfaces with reversible wetting transition will have a wide range of applications including rewritable liquid patterns, controlled drug release systems, lab-on-a-chip devices, and biosensors.
Tunable superamphiphobic surfaces: a platform for naked-eye ATP detection
TLDR
A developed biosensor methodology based on droplet sorting ability of the fabricated surface is energy-efficient and economical which is promising for biosensors, point-of-care testing, and biochemical assays.
Metallic superhydrophobic surfaces via thermal sensitization
Superhydrophobic surfaces (i.e., surfaces extremely repellent to water) allow water droplets to bead up and easily roll off from the surface. While a few methods have been developed to fabricate…
Sorting Liquid Droplets by Surface Tension Using Devices with Quasi-Superamphiphobic Coatings
TLDR
A correlation between ethanol content/surface tension and rolling time/distance is found, so the same device is used to estimate the alcoholic strength of Chinese liquors and to predict the surface tension of ethanol aqueous solutions.
Superomniphobic Surfaces with Improved Mechanical Durability: Synergy of Hierarchical Texture and Mechanical Interlocking
TLDR
A two-layer design strategy was developed to fabricate superomniphobic surfaces with improved durability via synergistic effect of interconnected hierarchical porous texture and micro/nano-mechanical interlocking.
Robust Super-Amphiphobic Titanium Surface for Liquid/Liquid Mini Separations
Super-amphiphobic surface with low robustness is not suitable for practical application due to its weak mechanical strength. In this work, an in-site growth of micro-/nanoscale flower-like TiO2 on…
Superomniphobic Papers for On‐Paper pH Sensors
Paper‐based superomniphobic surfaces are of great interest because paper is flexible, inexpensive, lightweight, breathable, and recyclable. Prior reports on paper‐based superomniphobic surfaces have…
Coalescence-Induced Self-Propulsion of Droplets on Superomniphobic Surfaces.
We utilized superomniphobic surfaces to systematically investigate the different regimes of coalescence-induced self-propulsion of liquid droplets with a wide range of droplet radii, viscosities, and…
Surface Tension Sensor Meshes for Rapid Alcohol Quantification.
TLDR
Results from testing commercial wines are presented along with the fabrication of electrospun two-layer polymeric sensor arrays, which exhibit controlled wettability.
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