We investigate the hydrodynamics of a spherical and dumbbell-shaped swimmer in a
viscoelastic fluid, modelled by the Giesekus constitutive equation. The 'squirmer', a model of …

Biological and artificial microswimmers often encounter fluid media with non-Newtonian
rheological properties. In particular, many biological fluids such as blood and mucus are …

This study presents the application of the smoothed profile (SP) method to perform direct
numerical simulations for the motion of both passive and active “squirming” particles in …

Self-propelled particles are commonly found in a large number of planktonic organisms such
as bacteria, fungi, and algae in nature, and researchers have taken a long interest in …

Biological microorganisms and artificial micro-swimmers often locomote in heterogeneous
viscous environments consisting of networks of obstacles embedded into viscous fluid …

A key feature of many living systems, such as bacteria and eukaryotic cells, is their ability to
actively self-propel. Indeed, cellular motility underlies numerous critical biological …

In biological systems, microswimmers often propel themselves through complex media.
However, many aspects of swimming mechanisms in non-Newtonian fluids remain unclear …

The development of novel drug delivery systems, which are revolutionizing modern
medicine, is benefiting from studies on microorganisms' swimming. In this paper we consider …

The impact of complex media on the dynamics of active swimmers has gained a thriving
interest in the research community for their prominent applications in various fields. This …

An active, self-propelled, spherical microbody in a weakly viscoelastic matrix fluid is
investigated theoretically using analytical techniques. The Upper-Convected Maxwell …