Understanding non-Gaussian velocity fluctuations in helical nano-propellers

Abstract

Helical magnetic nanopropellers have been a subject of active research in the last few years. In this work we present the details of the numerical calculation to model their motion in the presence of thermal fluctuations. Also pertaining to their possible use in microfluidic devices, we have included the effect of adjacent walls. The results of our numerical calculations show non-Gaussian features in the power spectrum of the propulsion velocity, in close resemblance with experimental observations.