I have been investigating a new class of dust instabilities in magnetized plasmas, the magnetic resonant drag instabilities.
Here is a video of a GIZMO simulation of the magnetic RDI.
Volume-weighted rms standard deviation of various gas and dust properties vs.\ simulation time. We broadly denote three regimes in time: (i) linear, (ii) early nonlinear, and (iii) saturation. In (i), growth rates are rapid and agree reasonably well with the expectation from linear theory }) for a mix of modes. In (ii) growth continues but at decreasing rates until saturating in (iii). There is strong anisotropy between fluctuations in gas velocity and magnetic field. But for each component, the gas velocity and magnetic field fluctuations are tightly-coupled, especially perpendicular to the magnetic field.
Read the relevant papers, Seligman, D., Hopkins, P. F., Squire, J. "Nonlinear Evolution of the Resonant Drag Instability in Magnetized Gas." MNRAS, 485, 3991, 2019 and Hopkins, P. F., Squire, J., Seligman, D. "Simulating the Diverse Instabilities of Dust in Magnetized Gas." MNRAS, 2020.