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    "headline": "The Wall Chose Where the Filament Broke",
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    "dek": "In microfluidic coflows, confinement created a shear maximum that seeded the first bead-on-a-string instability.",
    "summary": "In microfluidic coflows, confinement created a shear maximum that seeded the first bead-on-a-string instability.",
    "body_text": "Experiments with a shear-thinning viscoelastic liquid in a rectangular microchannel mapped stable coflow, squeezing, dripping and jetting regimes. Elasticity delayed capillary breakup, while wall-induced nonuniform shear along an inclined filament selected where the first bead-on-a-string instability appeared. Scaling arguments predicted key sizes and lengths to the correct order, giving a coupled wall-shear-elasticity picture rather than classical thinning alone.",
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    "tags": [
      "microfluidics",
      "viscoelasticity",
      "fluid dynamics"
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      "title": "arXiv preprint 2608.05343",
      "publisher": "arXiv",
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    "title": "The Wall Chose Where the Filament Broke",
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