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5/19/26, 10:00 AMFlow, wetting, and transport phenomenaOral
The separation of colloidal particles is of great importance in many fields, such as purification, sensing, and bioanalysis. However, separating particles based on their surface physico-chemical properties remains challenging. Here, we present an innovative microfluidic strategy enabling the continuous separation of colloidal particles based on their surface chemistry. Through experimental and...
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Chiara Neto (University of Sydney)5/19/26, 10:20 AMFlow, wetting, and transport phenomenaOral
Dissolved atmospheric gases are typically assumed to have negligible influence on liquid behaviour because their solubility is considered too low to affect macroscopic properties. However, long‑standing observations contradict this view: for example, it is well known that dissolved gases can accumulate at solid hydrophobic surfaces immersed in water;[1] the emergence of long-range hydrophobic...
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5/19/26, 10:40 AMFlow, wetting, and transport phenomenaOral
The measurement of frequency-dependent viscoelastic moduli is of paramount importance in many fields, from material science to biology, and is typically accomplished in bulk materials using commercial rheometers. The trend towards miniaturization in the biotechnology, manufacturing and chemical processing industries has motivated the extension of viscoelastic measurements to microscopic...
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5/19/26, 11:40 AMFlow, wetting, and transport phenomenaOral
When transported by a pressure-driven flow in a cylindrical capillary, bubbles may exhibit very fast velocities. In this paper, we show that when the bubbles are largely deformable, that is, at large capillary numbers Ca, the velocity of the bubble can be larger than the maximal velocity of the flow that transports them. We call this regime “super-fast”. However, the situation changes when...
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5/19/26, 12:00 PMFlow, wetting, and transport phenomenaOral
Droplet microarrays provide a multitude of parallel compartments for (bio)chemical reactions and find various applications in fields such as high-throughput screening [1]. The ability to draw samples from these tiny reaction spaces is instrumental for monitoring assays or withdrawing liquid for further processing. We present a method for parallel sampling from droplet microarrays that is based...
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5/19/26, 12:20 PMFlow, wetting, and transport phenomenaOral
Liquid–liquid interfaces are central to open microfluidics, yet programming interfacial mass transfer and reading out droplet motion or flow history without embedded hardware or tracer particles remains challenging. We present a liquid crystal (LC) platform in which water droplets interacting with LC films – by impact or translation – control liquid–liquid transport while simultaneously...
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5/19/26, 12:40 PMMicrofabrication and device engineeringOral
The incorporation of functional and stimuli-responsive materials into complex three-dimensional (3D) architectures offers a powerful route for improving device performance. These strategies have found application in areas including optoelectronics, soft robotics, energy harvesting, and droplet microfluidics [1–3]. In particular, while droplet-based microfluidics enables precise control of...
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