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 …

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

Hydrodynamic interactions (HIs), namely, solvent-mediated long-range interactions between
dispersed particles, play a crucial role in the assembly and dynamics of many active …

Cilia and flagella in biological systems often show large scale cooperative behaviors such
as the synchronization of their beats in “metachronal waves.” These are beautiful examples …

In this review article, we highlight many recent advances in the field of micromanipulation of
colloidal particles using hydrodynamic interactions (HIs), namely solvent mediated long …

Synchronization of driven oscillators is a key aspect of flow generation in artificial and
biological filaments such as cilia. Previous theoretical and numerical studies have …

We measure the energy exchanged between two hydrodynamically coupled micron-sized
Brownian particles trapped in water by two optical tweezers. The system is driven out of …

Since their first appearance in the 1970s (Ashkin, 1970), optical tweezers (OT) have been
extensively developed and have proved to be an invaluable tool for a variety of applications …

In many organisms, multiple motile cilia coordinate their beating to facilitate swimming or
driving of surface flows. Simple models are required to gain a quantitative understanding of …

Two colloidal particles, driven around an optical vortex trap, have been recently shown to
pair due to an interplay between hydrodynamic interactions and the curved path they are …