Ivan Palaia
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View article: Charging Dynamics of Electric Double-Layer Nanocapacitors in Mean Field
Charging Dynamics of Electric Double-Layer Nanocapacitors in Mean Field Open
An electric double-layer capacitor (EDLC) stores energy by modulating the spatial distribution of ions in the electrolytic solution that it contains. We determine the mean-field timescales for planar EDLC relaxation to equilibrium after a …
View article: Poisson-Nernst-Planck charging dynamics of an electric double-layer capacitor: Symmetric and asymmetric binary electrolytes
Poisson-Nernst-Planck charging dynamics of an electric double-layer capacitor: Symmetric and asymmetric binary electrolytes Open
A parallel plate capacitor containing an electrolytic solution is the simplest model of a supercapacitor or electric double-layer capacitor. Using both analytical and numerical techniques, we solve the Poisson-Nernst-Planck equations for s…
View article: Charge distribution of the coating brush drives interchromosome attraction
Charge distribution of the coating brush drives interchromosome attraction Open
The condensation of charged polymers is an important driver for the formation of biomolecular condensates. Recent experiments suggest that this mechanism also controls the clustering of eukaryotic chromosomes during the late stages of cell…
View article: Charge distribution of coating brush drives inter-chromosome attraction
Charge distribution of coating brush drives inter-chromosome attraction Open
The condensation of charged polymers is an important driver for the formation of biomolecular condensates. Recent experiments suggest that this mechanism also controls the clustering of eukaryotic chromosomes during the late stages of cell…
View article: Caging of membrane-to-cortex attachment proteins can trigger cellular symmetry breaking
Caging of membrane-to-cortex attachment proteins can trigger cellular symmetry breaking Open
SUMMARY To migrate, divide, and change shape, cells must regulate the mechanics of their periphery. The cell surface is a complex structure that consists of a thin, contractile cortical actin network tethered to the plasma membrane by spec…
View article: Non-equilibrium remodelling of collagen-IV networks in silico
Non-equilibrium remodelling of collagen-IV networks in silico Open
Collagen IV is one of the main components of the basement membrane, a layer of material that lines the majority of tissues in multicellular organisms. Collagen-IV molecules assemble into networks, providing stiffness and elasticity to tiss…
View article: Unconventional colloidal aggregation in chiral bacterial baths
Unconventional colloidal aggregation in chiral bacterial baths Open
When in equilibrium, thermal forces agitate molecules, which then diffuse, collide and bind to form materials. However, the space of accessible structures in which micron-scale particles can be organized by thermal forces is limited, owing…
View article: Poisson-Nernst-Planck charging dynamics of an electric double layer capacitor: symmetric and asymmetric binary electrolytes
Poisson-Nernst-Planck charging dynamics of an electric double layer capacitor: symmetric and asymmetric binary electrolytes Open
A parallel plate capacitor containing an electrolytic solution is the simplest model of a supercapacitor, or electric double layer capacitor. Using both analytical and numerical techniques, we solve the Poisson-Nernst-Planck equations for …
View article: Charging dynamics of electric double layer nanocapacitors in mean-field
Charging dynamics of electric double layer nanocapacitors in mean-field Open
An electric double layer capacitor (EDLC) stores energy by modulating the spatial distribution of ions in the electrolytic solution that it contains. We determine the mean-field time scales for planar EDLC relaxation to equilibrium, after …
View article: Mechanochemical Rules for Shape-Shifting Filaments that Remodel Membranes
Mechanochemical Rules for Shape-Shifting Filaments that Remodel Membranes Open
The sequential exchange of filament composition to increase filament curvature was proposed as a mechanism for how some biological polymers deform and cut membranes. The relationship between the filament composition and its mechanical effe…
View article: Non-conventional colloidal aggregation in bacterial baths
Non-conventional colloidal aggregation in bacterial baths Open
In equilibrium, thermal forces agitate molecules that diffuse, collide, and bind to form materials. They are, however, insufficient to efficiently organize particles at the micron-scale due to slow dynamics and metastable states [1, 2]. Ac…
View article: Controlling cluster size in 2D phase-separating binary mixtures with specific interactions
Controlling cluster size in 2D phase-separating binary mixtures with specific interactions Open
By varying the concentration of molecules in the cytoplasm or on the membrane, cells can induce the formation of condensates and liquid droplets, similar to phase separation. Their thermodynamics, much studied, depends on the mutual intera…
View article: Mechanochemical rules for shape-shifting filaments that remodel membranes
Mechanochemical rules for shape-shifting filaments that remodel membranes Open
The sequential exchange of filament composition to increase filament curvature was proposed as a mechanism for how ESCRT-III polymers deform and cut membranes. The relationship between the filament composition and its mechanical effect is …
View article: Like-charge attraction at the nanoscale: ground-state correlations and water destructuring
Like-charge attraction at the nanoscale: ground-state correlations and water destructuring Open
Like-charge attraction, driven by ionic correlations, challenges our understanding of electrostatics both in soft and hard matter. For two charged planar surfaces confining counterions and water, we prove that even at relatively low correl…
View article: Controlling cluster size in 2D phase-separating binary mixtures with specific interactions
Controlling cluster size in 2D phase-separating binary mixtures with specific interactions Open
By varying the concentration of molecules in the cytoplasm or on the membrane, cells can induce the formation of condensates and liquid droplets through phase separation. Their thermodynamics, much studied, depends on the mutual interactio…
View article: The physics of cement cohesion
The physics of cement cohesion Open
Ion-water restructuring under confinement is at the origin of ion-specific nanoscale forces that control cement cohesion.
View article: Durotaxis of passive nanoparticles on elastic membranes
Durotaxis of passive nanoparticles on elastic membranes Open
The transport of macromolecules and nanoscopic particles to a target cellular site is a crucial aspect in many physiological processes. This directional motion is generally controlled via active mechanical and chemical processes. Here we s…
View article: PLCγ1 promotes phase separation of T cell signaling components
PLCγ1 promotes phase separation of T cell signaling components Open
The T cell receptor (TCR) pathway receives, processes, and amplifies the signal from pathogenic antigens to the activation of T cells. Although major components in this pathway have been identified, the knowledge on how individual componen…
View article: Correction: Electroosmosis as a probe for electrostatic correlations
Correction: Electroosmosis as a probe for electrostatic correlations Open
Correction for ‘Electroosmosis as a probe for electrostatic correlations’ by Ivan Palaia et al., Soft Matter, 2020, 16, 10688–10696, DOI: 10.1039/D0SM01523G.
View article: Electroosmosis as a probe for electrostatic correlations
Electroosmosis as a probe for electrostatic correlations Open
We study the role of ionic correlations on the electroosmotic flow in planar double-slit channels, without salt. We propose an analytical theory, based on recent advances in the understanding of correlated systems. We compare the theory wi…
View article: PLCγ1 promotes phase separation of the T cell signaling clusters
PLCγ1 promotes phase separation of the T cell signaling clusters Open
Summary The T cell receptor (TCR) pathway receives, processes, and amplifies the signal from pathogenic antigens to the activation of T cells. Although major components in this pathway have been identified, the knowledge on how individual …
View article: Charged systems in, out of, and driven to equilibrium : from nanocapacitors to cement
Charged systems in, out of, and driven to equilibrium : from nanocapacitors to cement Open
Most systems in soft matter are immersed in solutions with charged species. Some of them can be described by mean-field techniques, while others require more sophisticated treatments that account for correlations between ions.In the first …