Optical tweezers (OTs), which generate a variety of fascinating beam patterns, allow
biologists to uncover the natural secrets of human life at single-cell level. Due to its gentle …

Standard optical tweezers rely on optical forces arising when a focused laser beam interacts
with a microscopic particle: scattering forces, pushing the particle along the beam direction …

Self-organisation is driven by the interactions between the individual components of a
system mediated by the environment, and is one of the most important strategies used by …

Experimental evidence indicates that high-repetition-rate ultrafast pulsed excitation is more
efficient in optical trapping of dielectric nanoparticles as compared with continuous-wave …

A compact and low-cost system capable of Digital Holographic Microscopic (DHM) imaging
of immobilized micro-particles is presented. The proposed design, integration, and …

Optical tweezers are powerful tools based on focused laser beams. They are able to trap,
manipulate, and investigate a wide range of microscopic and nanoscopic particles in …

Optical forces are often calculated by discretizing the trapping light beam into a set of rays
and using geometrical optics to compute the exchange of momentum. However, the number …

In optical levitation traps, a light beam propagating upward is focused with a relatively low
numerical aperture (NA), producing a large scattering force along the propagation direction …

The purpose of this work is to enable the simultaneous printing and deformation of polymer
microsystems using an integrated two-photon lithography (TPL) and holographic optical …

Developing angular trapping methods, which enable optical tweezers to rotate a
micronsized bead, is of great importance for studies of biomacromolecules in a wide range …