Using the Helmholtz coils system is one of the most suitable approaches which have been
introduced for generating uniform magnetic fields. In this paper, uniformity of the generated …

Swimming micro-organisms often have to propel themselves in complex non-Newtonian
fluids. We carry out experiments with self-propelling helical swimmers driven by an …

Massive windings must be used for strong magnetic field applications, which results in low
magnetic field uniformity. In this paper, a simple circular Helmholtz coil system is analyzed to …

Viscoelastic fluids impact the locomotion of swimming microorganisms and can be
harnessed to devise new types of self-propelling devices. Here we report on experiments …

In this paper, effects of the assembly misalignments and the manufacturing mismatches on
the magnetic field uniformity of a practical tri-axial Helmholtz coils system have been …

We experimentally and theoretically study the dynamics of a low-Reynolds number helical
swimmer moving across viscosity gradients. Experimentally, a double-layer viscosity is …

In this work, we study the effect of sphere rotation on the drag coefficient experienced by a
sphere sedimenting through a nearly constant viscosity and elastic Boger fluid, using …

We conduct experiments with force-free magnetically driven rigid helical swimmers in
Newtonian and viscoelastic (Boger) fluids. By varying the sizes of the swimmer body and its …

We investigate the effects of helical swimmer shape (ie helical pitch angle and tail thickness)
on swimming dynamics in a constant viscosity viscoelastic (Boger) fluid via a combination of …

The effects of viscoelasticity have been shown to manifest themselves via symmetry
breaking. In this investigation, we show a novel phenomenon that arises from this idea. We …