(276d) Self-Assembly By Deionization, Coacervation, and Epitaxy
- Conference: AIChE Annual Meeting
- Year: 2018
- Proceeding: 2018 AIChE Annual Meeting
- Group: Engineering Sciences and Fundamentals
- Time: Tuesday, October 30, 2018 - 8:45am-9:00am
Interfacial charging and ionic conductance are ubiquitous properties of colloidal suspensions that also profoundly affect their stability and phase behavior. Rigorous deionization induces long-range electrostatic forces that can drive colloidal crystallization, and small changes in salinity can drive large changes in the assembly of oppositely charged colloidal particles and polyelectrolytes. Here we demonstrate a new technique to control the salinity of colloids in-situ, and show how it may be combined with the physics of polyelectrolyte coacervation and epitaxial templating to produce self-assembled crystals of oppositely charged colloidal particles.