Our joint theoretical-experimental work on rotational locking of electrically trapped microparticles in Paul traps appeared in PRL. In this work we demonstrated how the rotational motion of micron-scale particles can be locked to the drive frequency of the Paul trap by using that the particle's quadrupole moments tend to align with the instantaneous quadrupole field. Check out the paper for the details.
Rotational locking in Paul traps
Universität Ulm Universität Ulm
Our letter on rotational locking of charged microparticles in Paul traps was published in PRL