Ion condensation on charged patterned surfaces.

@article{Velichko2008IonCO,
  title={Ion condensation on charged patterned surfaces.},
  author={Yuri S. Velichko and Francisco J. Solis and Monica Olvera de la Cruz},
  journal={The Journal of chemical physics},
  year={2008},
  volume={128 14},
  pages={
          144706
        }
}
We study ion condensation on a patterned surface with stripes of alternating charge. The competition between adsorbed ion-ion and adsorbed ion-surface interactions leads to the formation of different strongly correlated structures of condensed ions in the low-temperature limit (LTL). We consider two types of arrangements which have lowest energy in the LTL: (1) ions adsorbed onto the stripe center lines and (2) arrays of dipoles at the interfaces between charged domains. We determine the… 
5 Citations

Figures from this paper

Electrostatic-driven pattern formation in fibers, nanotubes and pores
The physical properties of interfaces between media with different dielectric permittivities are modified by the adsorption of charged particles. The adsorbed charges can be arranged into
Efficient simulation method for nano-patterned charged surfaces in an electrolyte solution.
TLDR
A method to efficiently simulate nano-patterned charged surfaces inside an electrolyte solution using a modified 3d Ewald summation method and the force between surfaces is found to depend strongly on the specific charge pattern, on the surface alignment and separation.
Structural phase transitions and mechanical properties of binary ionic colloidal crystals at interfaces
Electrostatic interactions are essential to designing self-assembled structures with unique symmetries and mechanical properties. These interactions can be modified by varying the effective charge of
Isothermal adsorption of polyampholytes on charged nanopatterned surfaces.
TLDR
It is observed that the amount of adsorption and the structure of the adsorbed polyampholytes depend strongly on the surface pattern, the relative size of the surface domains, and the charge distribution along thepolyampholyte backbone.

References

SHOWING 1-10 OF 54 REFERENCES
Surfaces with quenched and annealed disordered charge distributions
TLDR
Using Monte-Carlo simulation methods, expressions for the effective interaction between charged colloids and charged rods close to a charged surface are obtained and the effect of the surface-ion mobility and polarization charges on the interaction is discussed.
Charged particles on surfaces: coexistence of dilute phases and periodic structures at interfaces.
TLDR
The coexistence between a high density ionic periodic phase and a dilute isotropic ionic phase is determined and the periodic length scale of the solid phase is found to scale as epsilon/(lB psi3/2), where psi is the effective charge density, lB is the Bjerrum length, and Epsilon is the cohesive energy.
Patterning electro-osmotic flow with patterned surface charge.
TLDR
This Letter reports the measurement of electro-osmotic flows (EOF) in microchannels with surface charge patterned on the 200 microm scale, which agree well with theory in the limit of thin double layers and low surface potential.
Macroion Attraction Due to Electrostatic Correlation between Screening Counterions. 1. Mobile Surface-Adsorbed Ions and Diffuse Ion Cloud
Highly charged macroion surfaces in solutions of multivalent electrolytes attract each other electrostatically through correlations in their counterion environment. We show that significant
Polynucleotide adsorption to negatively charged surfaces in divalent salt solutions.
TLDR
A self-consistent mean-field model that includes the pH effect on the surface-charge density and the interactions between divalent ions and surface groups is analyzed, which provides the effects of polyelectrolyte line-chargedensity and monovalent salt on adsorption.
Counterions at charge-modulated substrates
We consider counterions in the presence of a single planar surface with a spatially inhomogeneous charge distribution using Monte Carlo simulations and strong-coupling theory. For high surface
Separation of DNA with different configurations on flat and nanopatterned surfaces.
We demonstrate that electrophoresis on a flat Si substrate is an effective method in separation of DNA with different configurations, e.g., linear, supercoiled, and relaxed or DNA of different
Competing interactions in two dimensional Coulomb systems: surface charge heterogeneities in coassembled cationic-anionic incompatible mixtures.
TLDR
A binary mixture of oppositely charged components confined to a plane such as cationic and anionic lipid bilayers may exhibit local segregation and by adding salt, the ordering of the domains disappears and the mixture macroscopically phase segregates in agreement with analytical predictions.
...
1
2
3
4
5
...