[HTML][HTML] Progress in Rheology of Active Colloidal Systems

J John, A Panahi, D Pu, G Natale - Current Opinion in Colloid & Interface …, 2024 - Elsevier
We review recent theoretical and experimental developments in measuring the rheological
response of active colloidal systems. Particular attention is dedicated to active and passive …

High-resolution detection of pitch rotation in an optically confined hexagonal-shaped upconverting particle

S Chakraborty, G Nalupurackal, S Roy, M Lokesh… - Optics …, 2023 - opg.optica.org
A rigid body can have six degrees of freedom, of which three are with rotational origin. In the
nomenclature of the airlines, the in-plane degree of rotational freedom can be called yaw …

[HTML][HTML] Nonlinear dynamics of a microparticle in a hydro-thermophoretic trap

K Panja, J Goswami, G Nalupurackal, S Chakraborty… - Results in Physics, 2024 - Elsevier
Controlling the translational and rotational motion of microparticles is a topic of current
interest in soft matter and statistical mechanics. Roll rotation of a microparticle in a hydro …

Detection of pitch rotation to high resolution in an optically trapped hexagonal shaped upconverting particle

S Chakraborty, G Nalupurackal… - Optical Trapping and …, 2024 - spiedigitallibrary.org
A rigid body can have six degrees of freedom, of which three are with rotational origin. In the
nomenclature of the airlines, the in-plane degree of rotational freedom can be called yaw …

Optical trapping with photonic nanojets using various sized polystyrene spheres yields two different regimes

U Shankar, J Goswami, G Nalupurackal… - Nanophotonics …, 2024 - spiedigitallibrary.org
Photonic nanojets typically require a spherical object onto which a laser beam is illuminated.
The presence of the spherical object creates a near-field nanojet where light is emitted in the …