Roadmap for optical tweezers
Optical tweezers are tools made of light that enable contactless pushing, trapping, and
manipulation of objects, ranging from atoms to space light sails. Since the pioneering work …
manipulation of objects, ranging from atoms to space light sails. Since the pioneering work …
A hydro-thermophoretic trap for microparticles near a gold-coated substrate
Optical tweezers have revolutionised micromanipulation from physics and biology to
material science. However, the high laser power involved in optical trapping can damage …
material science. However, the high laser power involved in optical trapping can damage …
Accelerated self assembly of particles at the air-water interface with optically assisted heating due to an upconverting particle
Particles can be assembled at the air-water interface due to optically induced local heating.
This induces convection currents in the water which brings particles to the surface. We …
This induces convection currents in the water which brings particles to the surface. We …
Simultaneous Optical Trapping and Electromagnetic Micromanipulation of Ferromagnetically Doped NaYF4 Microparticles
Optical trapping allows the trapping and manipulation of dielectric microparticles. However,
full control over all six degrees of freedom of the trapped object is challenging. Here, we use …
full control over all six degrees of freedom of the trapped object is challenging. Here, we use …
Towards stirling engine using an optically confined particle subjected to asymmetric temperature profile
The realization of microscopic heat engines has gained a surge of research interest in
statistical physics, soft matter, and biological physics. A typical microscopic heat engine …
statistical physics, soft matter, and biological physics. A typical microscopic heat engine …
Realization of pitch-rotational torque wrench in two-beam optical tweezers
Abstract 3D Pitch (out-of-plane) rotational motion has been generated in spherical particles
by maneuvering the laser spots of holographic optical tweezers. However, since the …
by maneuvering the laser spots of holographic optical tweezers. However, since the …
Controlled roll rotation of a microparticle in a hydro-thermophoretic trap
In recent years, there has been a growing interest in controlling the motion of microparticles
inside and outside a focused laser beam. A hydro-thermophoretic trap was recently reported …
inside and outside a focused laser beam. A hydro-thermophoretic trap was recently reported …
Comparison of translational and rotational modes towards passive rheology of the cytoplasm of MCF-7 cells using optical tweezers
A colloidal particle placed inside the cell cytoplasm is enmeshed within a network of
cytoskeletal fibres immersed in the cytosolic fluid. The translational mode is believed to yield …
cytoskeletal fibres immersed in the cytosolic fluid. The translational mode is believed to yield …
Generation of partial roll rotation in a hexagonal NaYF4 particle by switching between different optical trapping configurations
Typically a rigid body can have three degrees of rotational freedom. Among these, there can
be two types of out-of-plane rotational modes, called the pitch and the roll. The pitch motion …
be two types of out-of-plane rotational modes, called the pitch and the roll. The pitch motion …
Simultaneous optical trapping and magnetic micromanipulation of ferromagnetic iron-doped upconversion microparticles in six degrees of freedom
Optical trapping of magnetic Fe-oxide particles is notoriously difficult due to their high
refractive indices, not to mention high absorptivity at the trapping infra-red wavelengths. We …
refractive indices, not to mention high absorptivity at the trapping infra-red wavelengths. We …