3 papers
cond-mat.soft2025
Correlations, mean-field limits, and transition to the concentrated regime in motile particle suspensions
Bryce Palmer, Scott Weady, Michael O'Brien +2
Suspensions of swimming particles exhibit complex collective behaviors driven by hydrodynamic interactions, showing persistent large-scale flows and long-range correlations. While…
cond-mat.soft2019
Above and beyond: Holographic tracking of axial displacements in holographic optical tweezers
Michael J. O'Brien, David G. Grier
How far a particle moves along the optical axis in a holographic optical trap is not simply dictated by the programmed motion of the trap, but rather depends on an interplay of the…
cond-mat.soft2018
Machine-learning techniques for fast and accurate feature localization in holograms of colloidal particles
Mark D. Hannel, Aidan Abdulali, Michael O'Brien +1
Holograms of colloidal particles can be analyzed with the Lorenz-Mie theory of light scattering to measure individual particles' three-dimensional positions with nanometer precisio…