Thermo-optical tweezers based on photothermal waveguides

F Li, J Wei, X Qin, X Chen, D Chen, W Zhang… - Microsystems & …, 2024 - nature.com
Field-controlled micromanipulation represents a pivotal technique for handling
microparticles, yet conventional methods often risk physical damage to targets. Here, we …

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 …

Estimation of the proximal temperature rise of an excited upconversion particle by detecting the wavefront of emission

G Nalupurackal, J Singh, S Roy, M Lokesh… - Optics …, 2024 - opg.optica.org
Monitoring the temperature distribution within a local environment at the micro and
nanoscale is vital as many processes are solely thermal. Various thermometric techniques …

Optical trap** 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 …

Optical Trap** with Photonic Nanojet (PNJ) using various sized Polystyrene Spheres

U Shankar, J Goswami, G Nalupurackal, B Roy - spiedigitallibrary.org
3. Goswami, J., Nalupurackal, G., Lokesh, M., Roy, S., Chakraborty, S., Bhattacharya, A.,... &
Roy, B.(2023). Formation of two-dimensional magnetically responsive clusters using …