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Showing 1–11 of 11 results
Advanced filters: Author: Jan Vermant Clear advanced filters

  • Understanding microscopic thin-film stability is crucial for applications in foams, emulsions, and microfluidics. Here, the authors use Dynamic Thin Film Balance measurements with fluorescently tagged surfactants to investigate Marangoni stresses and disjoining pressure in surfactant-stabilized films, linking asymmetric concentration gradients, localized convective flows, and stress redistribution to film stability.

    • Lucas Bidoire
    • Jan Vermant
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-11

  • The well-known boundaries of coffee stains are caused by the outward flow of particles suspended in the liquid. Experiments show that ellipsoidal particles can prevent the formation of such boundaries. See Letter p.308

    • Jan Vermant
    News & Views
    Nature
    Volume: 476, P: 286-287

  • The coffee ring effect is commonly observed in drying droplets containing suspended matter leading to a deposition at the droplet edge. Sempels et al. show that self-generated biosurfactants in living bacterial systems reverse the coffee ring effect and result in a homogeneous deposition.

    • Wouter Sempels
    • Raf De Dier
    • Jan Vermant
    ResearchOpen Access
    Nature Communications
    Volume: 4, P: 1-8

  • Fast control over propulsion direction modulates interactions between self-propelled particles and opens new avenues for the design of active materials. Here, the authors present a light-active system that allows rapid direction reversal, leading to controlled fusion and fission of colloidal assemblies.

    • Hanumantha Rao Vutukuri
    • Maciej Lisicki
    • Jan Vermant
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • The slightest deformation in the colloidal gels made by smooth particles causes them to transition from a solid to a liquid state. The authors develop a surface grafting technique using click-like chemistry to functionalize particles and show that the rough particle gel is much tougher.

    • Florence J. Müller
    • Lucio Isa
    • Jan Vermant
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • Surfaces with adsorbed and arrested colloids are of interest for the engineering of advanced mesostructured materials. Here the authors demonstrate a method for producing particle-stabilised droplets with controlled surface coverage and composition.

    • Greet Dockx
    • Steffen Geisel
    • Jan Vermant
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8

  • Building artificial nanostructures via self-assembly normally starts with shape-specific building blocks of colloidal particles or monomers. Here, Crassous et al.challenge this convention by showing that simple ellipsoids can form sheet-like or tubular structures in an alternating electric field.

    • Jérôme J. Crassous
    • Adriana M. Mihut
    • Peter Schurtenberger
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-7

  • Active matter, such as swimming bacteria, show unique behaviors under confinement, but it is experimentally challenging to measure them. Takatoriet al. show the use of acoustic tweezers to trap self-propelled Janus particles as an enabling tool to investigate collective motions in living systems.

    • Sho C. Takatori
    • Raf De Dier
    • John F. Brady
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • Experiments and simulations show that local non-equilibrium forces exerted by self-propelled particles trapped inside a giant unilamellar lipid vesicle induce dramatic shape changes in the vesicle.

    • Hanumantha Rao Vutukuri
    • Masoud Hoore
    • Jan Vermant
    Research
    Nature
    Volume: 586, P: 52-56

  • Stimuli-responsive emulsions are useful for long-term storage combined with controlled release, but the fundamental mechanism behind this release is not established. Here, the authors report a study into the effect of individual microgel morphology on the destabilisation of responsive emulsions.

    • Marcel Rey
    • Jannis Kolker
    • Paul S. Clegg
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-14