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In situ three-dimensional mapping of oxygen gradients in Staphylococcus epidermidis biofilms using a solution-based, ratiometric imaging platform
Staphylococcus epidermidis biofilm oxygen gradients are spatially mapped during biofilm development and after vancomycin treatment using a solution-based ratiometric imaging platform. By integrating the oxygen-sensitive, tris(2,2'-bipyridyl)dichlororuthenium(II) hexahydrate with oxygen-insensitive, water-soluble CdSe/ZnS quantum dots, we achieve in situ microscale resolution of dissolved oxygen (DO) concentrations within biofilms. The oxygen-sensing platform is calibrated within alginate...
Microfluidic Oscillatory Rheology of Transported Soft Particles
arXiv:2605.29842v2 Announce Type: replace-cross Abstract: Microfluidic channels have emerged as useful tools to control dynamic forcing on transported microscale objects, as encountered in emulsions, biological flows, and other soft matter systems. Tailored channel designs enable precise interfacial and bulk rheological measurements of complex materials over a wide range of forcing timescales. After a brief overview of recent experiments illustrating these techniques, we discuss perspectives...
Odd elasticity in disordered chiral active materials
Announce Type: replace-cross Abstract: Chiral active materials are abundant in nature, including the cytoskeleton with attached motor proteins, rotary clusters of bacterial flagella, and self-spinning starfish embryos. These materials break both time reversal and mirror-image (parity) symmetries due to injection of torques at the microscale. It was recently discovered that chiral active materials show a new type of elastic response termed `odd' elasticity.
Young Measure Based Quantum Linear Programming Algorithms for Nonlinear/Stochastic Multiscale Partial Differential Equations and Homogenization
arXiv:2606.06165v2 Announce Type: replace Abstract: We study quantum algorithms for nonlinear and stochastic homogenization via a Young-measure based linear programming (LP) formulation, which lifts the nonlinear problem to a linear one in higher dimensions by treating the microscale, the gradient, and possible random variables as independent variables, thereby capturing effective macroscopic quantities without directly resolving fine-scale oscillations. The resulting LP is large but...
Rotation-to-translation conversion by geometric asymmetry in viscoelastic fluids
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Quantum Algorithm for Nonlinear and Stochastic Homogenization via a Young-Measure based Linear Programming Formulation
Announce Type: new Abstract: We study quantum algorithms for nonlinear and stochastic homogenization via a Young-measure based linear programming (LP) formulation, which lifts the nonlinear problem to a linear one in higher dimensions by treating the microscale, the gradient, and possible random variables as independent variables, thereby capturing effective macroscopic quantities without directly resolving fine-scale oscillations. The resulting LP is large but structured, and its...
A Generalised Curvilinear Coordinate system-based Patch Dynamics Scheme in Equation-free Multiscale Modelling
arXiv:2405.08764v2 Announce Type: replace Abstract: The patch dynamics scheme in equation-free multiscale modelling has the potential to efficiently predict the macroscopic behaviours by simulating the microscale problem in a fraction of the space-time domain. The patch dynamics schemes developed so far are mainly on rectangular domains with uniform grids and uniform rectangular patches. In real-life problems, the geometry of the domain is not regular or simple, where rectangular and uniform...
Cross-scale spatially-aware generative modeling of transcriptomic programs underlying neurodegenerative brain organization
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Detailed molecular picture of tooth enamel reveals adaptations to diet
Detailed molecular picture of tooth enamel reveals adaptations to diet Sadie Harley Scientific Editor Robert Egan Associate Editor From chewing to chomping to grinding, teeth suffer from a lifetime of repeated mechanical stress. It makes sense, then, that enamel is one of the hardest natural materials. University of Wisconsin-Madison physics professor Pupa Gilbert and colleagues previously showed that the hydroxyapatite nanocrystals that make up enamel are arranged perfectly parallel to one...
Resonance behavior of a bubble near a spherical inclusion
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