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Self-assembly of highly ordered micro- and nanoparticle deposits

Author

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  • Hossein Zargartalebi

    (University of Calgary
    University of Calgary)

  • S. Hossein Hejazi

    (University of Calgary)

  • Amir Sanati-Nezhad

    (University of Calgary
    University of Calgary)

Abstract

The evaporation of particle-laden sessile droplets is associated with capillary-driven outward flow and leaves nonuniform coffee-ring-like particle patterns due to far-from-equilibrium effects. Traditionally, the surface energies of the drop and solid phases are tuned, or external forces are applied to suppress the coffee-ring; however, achieving a uniform and repeatable particle deposition is extremely challenging. Here, we report a simple, scalable, and noninvasive technique that yields uniform and exceptionally ordered particle deposits on a microscale surface area by placing the droplet on a near neutral-wet shadow mold attached to a hydrophilic substrate. The simplicity of the method, no external forces, and no tuning materials’ physiochemical properties make the present generic approach an excellent candidate for a wide range of sensitive applications. We demonstrate the utility of this method for fabricating ordered mono- and multilayer patternable coatings, producing nanofilters with controlled pore size, and creating reproducible functionalized nanosensors.

Suggested Citation

  • Hossein Zargartalebi & S. Hossein Hejazi & Amir Sanati-Nezhad, 2022. "Self-assembly of highly ordered micro- and nanoparticle deposits," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30660-6
    DOI: 10.1038/s41467-022-30660-6
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    References listed on IDEAS

    as
    1. Wouter Sempels & Raf De Dier & Hideaki Mizuno & Johan Hofkens & Jan Vermant, 2013. "Auto-production of biosurfactants reverses the coffee ring effect in a bacterial system," Nature Communications, Nature, vol. 4(1), pages 1-8, June.
    2. Zoey S. Davidson & Yongyang Huang & Adam Gross & Angel Martinez & Tim Still & Chao Zhou & Peter J. Collings & Randall D. Kamien & A. G. Yodh, 2017. "Deposition and drying dynamics of liquid crystal droplets," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
    3. Peter J. Yunker & Tim Still & Matthew A. Lohr & A. G. Yodh, 2011. "Suppression of the coffee-ring effect by shape-dependent capillary interactions," Nature, Nature, vol. 476(7360), pages 308-311, August.
    4. Eran Rabani & David R. Reichman & Phillip L. Geissler & Louis E. Brus, 2003. "Drying-mediated self-assembly of nanoparticles," Nature, Nature, vol. 426(6964), pages 271-274, November.
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