Author(s): Nan Shi, Rodrigo Nery-Azevedo, Amr I. Abdel-Fattah, and Todd M. Squires
A new microfluidic device enables the study of diffusiophoresis—migration of colloids in response to concentration gradients in the fluid—when both salt and pH gradients are present.
[Phys. Rev. Lett. 117, 258001] Published Thu Dec 15, 2016