Importance of charge regulation in attractive double-layer forces between dissimilar surfaces

• Published in: Physical review letters Vol. 104; no. 22; p. 228301
• Main Authors: Popa, Ionel, Sinha, Prashant, Finessi, Marco, Maroni, Plinio, Papastavrou, Georg, Borkovec, Michal
• Format: Journal Article
• Language: English
• Published: United States 02.06.2010
• Subjects: Amidines - chemistry; Electrons; Latex - chemistry; Microscopy, Atomic Force; Sulfates - chemistry; Surface Properties

Direct force measurements between oppositely charged latex particles in aqueous electrolyte solutions were carried out with a multiparticle colloidal probe technique based on atomic force microscopy. Force profiles between two dissimilarly charged surfaces can be only described when charge regulatio...