Shape change of nanocontainers via a reversible ionic buckling

Rastko Sknepnek, Graziano Vernizzi, Monica Olvera de la Cruz

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    We demonstrate that small charged nanocages can undergo reversible changes of shapes by modifying the ionic conditions including salt concentration, pH, and dielectric permittivity of the medium. Using numerical simulations, we analyze structures with various charge stoichiometric ratios. At zero or low charge densities, the shape of the cage is determined by its elastic properties, and the surface charge pattern is dictated by the globally fixed geometry. As the charge density per molecule increases, the shape is strongly affected by the electrostatic forces. In this regime, the shape of the nanocage is controlled by the charge distribution.

    Original languageEnglish
    Article numberARTN 215504
    Number of pages4
    JournalPhysical Review Letters
    Volume106
    Issue number21
    DOIs
    Publication statusPublished - 25 May 2011

    Keywords

    • HOLLOW INTERIORS
    • ELASTICITY
    • CHARGE REGULATION
    • WEAK POLYELECTROLYTES
    • GILFORD-PROGERIA-SYNDROME
    • METAL NANOSTRUCTURES
    • MECHANISMS

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