Bistability and hysteresis during aggregation of charged nanoparticles

Dawei Wang, Bartlomiej Kowalczyk, István Lagzi, Bartosz A. Grzybowski

Research output: Contribution to journalArticle

20 Citations (Scopus)


Nanoparticles functionalized with ionizable ligands can exist in either dispersed or aggregated states at the same value of pH. This bistability and the related hystreresis accompanying pH changes derive from a subtle interplay between electrostatic and van der Waals forces. A theoretical model allows one to control the range of pH over which bistability is observed.

Original languageEnglish
Pages (from-to)1459-1462
Number of pages4
JournalJournal of Physical Chemistry Letters
Issue number9
Publication statusPublished - May 6 2010


  • Nanoparticles and Nanostructures

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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