3 papers
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…
physics.soc-ph2024
Estimating the population-level effects of non-pharmaceutical interventions when transmission rates of COVID-19 vary by orders of magnitude from one contact to another
Richard P. Sear
Statistical physicists have long studied systems where the variable of interest spans many orders of magnitude, the classic example is the relaxation times of glassy materials, whi…