3 papers
cond-mat.soft2026
Self-Generated Electric Fields in Polyelectrolyte Gradients Increase Microparticle Transport
Max Huisman, Ali Azadbakht, Patrick B. Warren +1
There are many situations in nature and industry where small particles are exposed to gradients of charged polymers, such as enzymes in biological gradients of DNA or RNA, virus pa…
cond-mat.soft2025
Simple models for the trapping of charged particles and macromolecules by diffusiophoresis in salt gradients
Richard P. Sear, Patrick B. Warren
We study the trapping of charged particles and macromolecules (such as DNA) in salt gradients in aqueous solutions. The source for the salt gradient can be as simple as a dissolvin…
cond-mat.soft2024
Salt solutions with two or more salts generate ion currents analogous to magnetic field lines
Patrick B. Warren, Richard P. Sear
A gradient of a single salt in a solution generates an electric field, but not a current. Recent theoretical work by one of us [Phys. Rev. Lett. 24, 248004 (2020)] showed that the…