Nonlinear Dynamics of Capacitive Charging and Desalination by Porous Electrodes (2009)
Biesheuvel, P. M., Bazant, M. Z.
The rapid and efficient exchange of ions between porous electrodes and aqueous solutions is important in many applications, such as electrical energy storage by super-capacitors, water desalination...
Diffuse Charge Effects in Fuel Cell Membranes (2009)
Biesheuvel, P.M., Alejandro, A.F., Bazant, M.Z.
It is commonly assumed that electrolyte membranes in fuel cells are electrically neutral, except in unsteady situations, when the double-layer capacitance is heuristically included in equivalent...
Thermodynamic cycle analysis for capacitive deionization (2009)
Capacitive deionization (CDI) is an ion removal technology based on temporarily storing ions in the polarization layers of two oppositely positioned electrodes. Here we present a thermodynamic model...
Dynamic Adsorption/Desorption Process Model of Capacitive Deionization (2009)
In capacitive deionization (CDI), an electrical potential difference is applied across oppositely placed electrodes, resulting in the adsorption of ions from aqueous solution and a partially...
Imposed currents in galvanic cells (2009)
Biesheuvel, P.M., Soestbergen, M., Bazant, M.Z.
We analyze the steady-state behavior of a general mathematical model for reversible galvanic cells, such as redox flow cells, reversible solid oxide fuel cells, and rechargeable batteries. We...
Biesheuvel, P.M., Kleijn, J.M., Cohen Stuart, M.A.
The adsorption of the anionic surfactants sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (SDBS) in poly(ethylene oxide) (PEO) brushes was studied using a fixed-angle optical...
Zhao, R., Biesheuvel, P.M., Miedema, H., Bruning, H.
Porous electrodes are important in many physical−chemical processes including capacitive deionization (CDI), a desalination technology where ions are adsorbed from solution into the electrostatic...
Membrane capacitive deionization (2009)
Membrane capacitive deionization (MCDI) is an ion-removal process based on applying an electrical potential difference across an aqueous solution which flows in between oppositely placed porous...
Non-Gaussian curvature distribution of actin-propelled biomimetic colloid trajectories (2008)
Schmidt, S., Biesheuvel, P. M., Weinkamer, R., Helfer, E., Fery, A.
Schmidt, S., Biesheuvel, P.M., Weinkamer, R., Helfer, E., Fery, A.
We analyze the motion of colloids propelled by a comet-like tail of polymerizing actin filaments. The curvature of the particle trajectories deviates strongly from a Gaussian distribution, implying...
Biesheuvel, P.M., Kleijn, J.M., Cohen Stuart, M.A.
The adsorption of bovine serum albumin (BSA) in a planar poly(acrylic acid) (PAA) brush layer has been studied by fixed-angle optical reflectometry. The influence of polymer length, grafting density,...
Micromechanical theory for pH-dependent polyelectrolyte multilayer capsule swelling (2006)
Biesheuvel, P. M., Mauser, T., Sukhorukov, G. B., Möhwald, H.
Salt-induced swelling-to-shrinking transition in polyelectrolyte multilayer capsules (2006)
Köhler, K., Biesheuvel, P. M., Weinkamer, R., Möhwald, H., Sukhorukov, G. B.
Biesheuvel, P.M., Lindhoud, S., Cohen Stuart, M.A., Leermakers, F.A.M.
We present experimental and theoretical results for the phase behavior of mixtures of oppositely charged globular protein molecules in aqueous solutions containing monovalent salt. These colloidal...
Biesheuvel, P.M., Lindhoud, S., Stuart, M.A.C.
We study the phase behavior of mixtures of oppositely charged nanoparticles, both theoretically and experimentally. As an experimental model system we consider mixtures of lysozyme and lysozyme that...
Self-consistent field theory of protein adsorption in a non-Gaussian polyelectrolyte brush (2006)
Biesheuvel, P.M., Leermakers, F.A.M., Stuart, M.A.C.
To describe adsorption of globular protein molecules in a polyelectrolyte brush we use the strong-stretching approximation of the Edwards self-consistent field equation, combined with corrections for...
The equilibrium adsorption of polyelectrolytes with multiple types of ionizable groups is described using a modified Poisson-Boltzmann equation including charge regulation of both the polymer and the...
Biesheuvel, P.M., Wittemann, A.
Recent experiments showed significant adsorption of bovine serum albumin (BSA) in spherical polyelectrolyte brushes (SPB) consisting of polyacrylic acid, even for pH values above the isoelectric...
We describe the sedimentation-diffusion equilibrium of binary mixtures of charged colloids in the presence of small ions and for non-dilute conditions, by extending the work of Biben and Hansen (1994...
We consider the problem of polyelectrolyte molecules adsorbing on oppositely charged interfaces. For sufficiently long chains, the ground-state dominance approximation can be used which results in a...
Biesheuvel, P.M., Cohen Stuart, M.A.
When oppositely charged polyelectrolytes are mixed in water, attraction between oppositely charged groups may lead to the formation of polyelectrolyte complexes (associative phase separation, complex...
Cylindrical cell model for the electrostatic free energy of polyelectrolyte complexes (2004)
Biesheuvel, P.M., Cohen Stuart, M.A.
Associative phase separation (complex coacervation) in a mixture of oppositely charged polyelectrolytes can lead to different types of (inter-)polyelectrolyte complexes (soluble micelles, macroscopic...
Electrostatic free energy of interacting ionizable double layers (2004)
The electrostatic contribution to the interaction free energy of charge-regulating materials, similar as well as dissimilar, contains electric work as well as chemical work and can be obtained from...
Ionizable polyelectrolyte brushes: brush height and electrosteric interaction (2004)
Semi-analytical scaling theory is used to describe quenched and annealed (weakly charged, ionizable, charge-regulating) polyelectrolyte brushes in electrolyte solutions of arbitrary salt...
Biesheuvel, P.M., Stroeve, P., Barneveld, P.A.
Recent experimental data on the diffusive transport of globular protein molecules through nanopores (D ~ 20 nm), covered with chemisorbed self-assembled monolayers (SAMs) of carboxylic acid...
Evidence for charge regulation in the sedimentation of charged colloids (2004)
Recent experimental data for the centrifugal sedimentation-diffusion profile of charged colloidal silica (ø ~ 44 nm) in ethanol is analysed based on local charge neutrality and by either assuming a...
Shortcut model for water-balanced operation in fuel processor fuel cell systems (2004)
Biesheuvel, P.M., Kramer, G.J.
In a fuel processor, a hydrocarbon or oxygenate fuel is catalytically converted into a mixture rich in hydrogen which can be fed to a fuel cell to generate electricity. In these fuel processor fuel...
Samuel De Lint, W.B., Biesheuvel, P.M., Verweij, H.
The charge regulation concept is combined with the Navier-Stokes and Nernst-Planck equations to describe the ion retention of nanofiltration membranes consisting of narrow cylindrical pores. The...
A Prototype osmotic tensiometer with polymeric gel grains (2000)
Biesheuvel, P.M., Raangs, R., Verweij, H., Dirksen, C.
An accurate field method that directly measures the entire range of relevant soil water potentials for periods of months to years is not yet available. The osmotic tensiometer (OT) has the potential...