ja0642966_si_001.pdf (272.48 kB)
Ionic-like Behavior of Oppositely Charged Nanoparticles
journal contribution
posted on 2006-11-29, 00:00 authored by Alexander M. Kalsin, Bartlomiej Kowalczyk, Stoyan K. Smoukov, Rafal Klajn, Bartosz A. GrzybowskiMixtures of oppositely charged nanoparticles of various sizes and charge ratios precipitate only at the point of electroneutrality. This phenomenonspecific to the nanoscale and reminiscent of threshold precipitation of ionsis a consequence of the formation of core-and-shell nanoparticle aggregates, in which the shells are composed of like-charged particles and are stabilized by efficient electrostatic screening.