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 …

Cilia and flagella are fundamental units of motion in cellular biology. These beating, hair-like
organelles share a common basic structure but maintain widely varying functions in systems …

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 …

Since their invention in 1986 by Arthur Ashkin and colleagues, optical tweezers have
become an essential tool in several fields of physics, spectroscopy, biology …

In the past decade, the volvocine green algae, spanning from the unicellular
Chlamydomonas to multicellular Volvox, have emerged as model organisms for a number of …

The collective mobility of active matter (self-propelled objects that transduce energy into
mechanical work to drive their motion, most commonly through fluids) constitutes a new …

We study catalytic Janus particles and Escherichia coli bacteria swimming in a two-
dimensional colloidal crystal. The Janus particles orbit individual colloids and hop between …

Groups of eukaryotic cilia and flagella are capable of coordinating their beating over large
scales, routinely exhibiting collective dynamics in the form of metachronal waves. The origin …

The manipulation of small objects with light has become an indispensable tool in many
areas of research, ranging from physics to biology and medicine,,,,,–. Here, we demonstrate …

Near-field optics can overcome the diffraction limit by creating strong optical gradients to
enable the trapping of nanoparticles. However, it remains challenging to achieve efficient …