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DTSTART;TZID=Europe/Ljubljana:20241105T100000
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SUMMARY:Emanuela Bianchi\, "Modeling and simulating heterogeneously charged particles: from materials design to biological phenomena"
DESCRIPTION:Globular proteins and recently synthesized colloids engineered with differently charged surface regions share a direction-dependent interaction characterized by a reduced bonding valence and a competition between like-charge attraction and opposite-charge repulsion. Understanding the large-scale behavior of heterogeneously charged particles is thus critical for exploring both biological processes\, such as the liquid-liquid phase separation of globular proteins\, and the assembly of target structures with specific properties at the nano- and micro-scale. Recently\, we developed a simple coarse-grained model that\, within well-defined limits\, accurately reproduces the reference electrostatic potential derived from the linearized Poisson-Boltzmann framework . This model is straightforward to implement in Monte Carlo and Molecular Dynamics (MD) simulations\, enabling the exploration of how varying parameters — such as net particle charge and surface charge pattern — affect the self-assembly of these particles.As illustrative examples\, I will present our findings on how non-uniform electrostatics at the particle surface can influence the self-assembly of ordered phases  as well as the liquid-liquid phase separation . Soft Matter\, 7\, 8313 (2011)\, J.Chem. Phys.\, 142\, 114905 (2015) Nanoscale\, 9\, 1956 (2017)\, Current Opinion in Colloid & Interface Science\, 30\, 18 (2017) arXiv:2401.10655\, Soft Matter\, 20\, 7601(2024)\nhttps://indico.ijs.si/event/2461/
URL:https://web-f1.ijs.si/event/emanuela-bianchi-tba/
LOCATION:Seminar room of physics (106) (IJS)
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