Medical micro/nanorobots have received tremendous attention over the past decades owing
to their potential to be navigated into hard-to-reach tissues for a number of biomedical …

Active matter, which ranges from molecular motors to groups of animals, exists at different
length scales and timescales, and various computational models have been proposed to …

Locomotion and transport of microorganisms in fluids is an essential aspect of life. Search
for food, orientation toward light, spreading of off-spring, and the formation of colonies are …

Fluid dynamics plays a crucial role in many cellular processes, including the locomotion of
cells such as bacteria and spermatozoa. These organisms possess flagella, slender …

Differently from passive Brownian particles, active particles, also known as self-propelled
Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy …

Bacteria predate plants and animals by billions of years. Today, they are the world's smallest
cells, yet they represent the bulk of the world's biomass and the main reservoir of nutrients …

Biological microorganisms swim with flagella and cilia that execute nonreciprocal motions
for low Reynolds number (Re) propulsion in viscous fluids. This symmetry requirement is a …

In the body, mucus provides an important defense mechanism by limiting the penetration of
pathogens. It is therefore also a major obstacle for the efficient delivery of particle-based …

The locomotion of microorganisms and spermatozoa in complex viscoelastic fluids is of
critical importance in many biological processes such as fertilization, infection, and biofilm …

Tissue and biological fluids are complex viscoelastic media with a nanoporous
macromolecular structure. Here, we demonstrate that helical nanopropellers can be …