184 citations · 1.5k across the 52 of their papers we have counts for
52 papers
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…
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…
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…
Colloidal diffusiophoresis in crossed electrolyte gradients: experimental demonstration of an 'action at a distance' effect predicted by the Nernst-Planck equations
Ian Williams, Patrick B. Warren, Richard P. Sear +1
In an externally imposed electrolyte (salt) concentration gradient, charged colloids drift at speeds of order one micrometre per second. This phenomenon is known as diffusiophoresi…
Critical scaling law for the deposition efficiency of inertia-driven particle collisions with a cylinder in high Reynolds number air flow
Matthew R Turner, Richard P Sear
The Earth's atmosphere is an aerosol, it contains suspended particles. When air flows over an obstacle such as an aircraft wing or tree branch, these particles may not follow the s…
Modelling the filtration efficiency of a woven fabric: The role of multiple lengthscales
Ioatzin Rios de Anda, Jake W. Wilkins, Joshua F. Robinson +2
During the COVID-19 pandemic, many millions have worn masks made of woven fabric, to reduce the risk of transmission of COVID-19. Masks are essentially air filters worn on the face…