Dr. Basudev Roy Profile

Dr. Basudev Roy

Assistant Professor at Indian Institute of Technology Madras

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Author

Publications (22)

Proceedings Article | 3 October 2024 Presentation

Study of out-of-plane rotations in optical tweezers with usage in cellular biological systems

Basudev Roy

Proceedings Volume PC13112, PC131120H (2024) https://doi.org/10.1117/12.3025957

KEYWORDS: Optical tweezers, Particles, Nomenclature, Biology

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Proceedings Article | 2 October 2024 Paper

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

Snigdhadev Chakraborty, Gokul Nalupurackal, Basudev Roy

Proceedings Volume 13112, 1311207 (2024) https://doi.org/10.1117/12.3024704

KEYWORDS: Particles, Optical tweezers, Polarized light, Convection, Polarizers, Gold, Vacuum chambers, Spectral density, Scattered light, Photonic microstructures

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Proceedings Article | 2 October 2024 Poster + Paper

Simultaneous optical and magnetic manipulation using ferromagnetically doped upconverting particles

Gokul Nalupurackal, Basudev Roy

Proceedings Volume 13112, 131120F (2024) https://doi.org/10.1117/12.3024705

KEYWORDS: Particles, Magnetism, Optical tweezers, Quantum particles, Iron, Atmospheric particles, Upconversion, Refractive index, Optical properties, Glasses

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Proceedings Article | 10 June 2024 Poster + Paper

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

Uma Shankar, Jayesh Goswami, Gokul Nalupurackal, Basudev Roy

Proceedings Volume 12991, 129910U (2024) https://doi.org/10.1117/12.3010743

KEYWORDS: Particles, Polystyrene, Optical spheres, Diffraction limit, Photonic nanostructures, Optical tweezers, Microspheres, Finite-difference time-domain method, Quantum regime, Polarized light

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Proceedings Article | 3 October 2022 Poster + Paper

Soft probing technique to estimate the rolling work of adhesion in nanoscale regime using optical tweezers

Lokesh Muruga, Rahul Vaippuly, Gokul Nalupurackal, Srestha Roy, Basudev Roy

Proceedings Volume 12198, 121980K (2022) https://doi.org/10.1117/12.2626760

KEYWORDS: Particles, Optical tweezers, Glasses, Calibration, Spherical lenses, Bioalcohols, Adhesives, Water, Polarization, Birefringence

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Proceedings Article | 3 October 2022 Poster + Paper

Direct detection of cell membrane slope fluctuations upon adding Latrunculin B using optical tweezers and single probe particle

Srestha Roy, Snigdhadev Chakraborty, Lokesh Muruga, Rahul Vaippuly, Vandana Yadav, Saumendra Bajpai, Privitha Edwina, Basudev Roy

Proceedings Volume 12198, 121980J (2022) https://doi.org/10.1117/12.2626451

KEYWORDS: Particles, Optical tweezers, Cytoskeletons, Near infrared, Proteins, Polarizers, Objectives, Mirrors, Beam splitters, Polymerization

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Proceedings Article | 3 October 2022 Presentation + Paper

Towards Stirling engine from a single up-converting particle confined in an optical trap at pump-wavelength exhibiting Hot Brownian Motion

Sarangi Suresh, Muruga Lokesh, Gokul Nalupurackal, Rahul Vaippully, Srestha Roy, Basudev Roy

Proceedings Volume 12198, 121980C (2022) https://doi.org/10.1117/12.2628007

KEYWORDS: Particles, Optical tweezers, Data acquisition, Visible radiation, Calibration, Semiconductor lasers, Diffusion, Beam splitters, Stochastic processes, Stars

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Proceedings Article | 1 August 2021 Presentation + Paper

Generation of pitch rotational torque wrench using two-beam optical tweezers on a birefringent particle

Muruga Lokesh, Rahul Vaippully, Basudev Roy

Proceedings Volume 11798, 117981D (2021) https://doi.org/10.1117/12.2592081

KEYWORDS: Particles, Spherical lenses, Polarization, Optical tweezers, Light scattering, Calibration, Motion detection, Glasses, Beam splitters, Video microscopy

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Proceedings Article | 1 August 2021 Presentation + Paper

Generation of active motion from optically trapped upconverting nanoparticles

Sumeet Kumar, Rahul Vaippully, Basudev Roy

Proceedings Volume 11798, 117982E (2021) https://doi.org/10.1117/12.2592101

KEYWORDS: Particles, Optical tweezers, Nanoparticles, Interfaces, Backscatter, Active optics, Glasses, Motion measurement, Atmospheric particles, Mirrors

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Proceedings Article | 10 October 2020 Poster + Paper

Pitch rotation of hexagonal microparticle using single beam thermo-optical tweezers

Sumeet Kumar, Basudev Roy

Proceedings Volume 11556, 1155610 (2020) https://doi.org/10.1117/12.2576373

KEYWORDS: Particles, Gold, Optical tweezers, Scatter measurement, Photodiodes, Optical testing, Nomenclature, Motion measurement, Light scattering, Laser beam propagation

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Proceedings Article | 20 August 2020 Poster + Paper

Generation of thermo-optical instability mediated by thermophoresis in a sessile water droplet

Muruga Lokesh, Rahul Vaippully, Anvitha Reddy, Basudev Roy

Proceedings Volume 11463, 1146329 (2020) https://doi.org/10.1117/12.2563618

KEYWORDS: Interfaces, Diffusion, Optical tweezers

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Proceedings Article | 20 August 2020 Presentation + Paper

Determination of local cell membrane slope fluctuations using the pitch rotational mode of optical tweezers

Rahul Vaippully, Vaibavi Ramanujam, Manoj Gopalakrishnan, Saumendra Bajpai, Basudev Roy

Proceedings Volume 11463, 1146315 (2020) https://doi.org/10.1117/12.2563614

KEYWORDS: Optical tweezers, Objectives, Motion measurement

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Proceedings Article | 20 August 2020 Poster + Paper

Characterization of emission from thermo-optical tweezers during spontaneous self-assembly

Sumeet Kumar, Rahul Vaippully, Gaurav Vaidya, Basudev Roy

Proceedings Volume 11463, 1146326 (2020) https://doi.org/10.1117/12.2565911

KEYWORDS: Luminescence, Convection, Carbon nanotubes, Multiphoton fluorescence microscopy, Multiphoton processes

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Proceedings Article | 1 April 2020 Presentation + Paper

Study of absorption and emission dipoles of upconverting nanoparticles optically trapped at the absorption resonance

Amrendra Kumar, Gunaseelan M., Bhavesh Kharbanda, Rahul Vaippully, Basudev Roy

Proceedings Volume 11345, 113450Y (2020) https://doi.org/10.1117/12.2547476

KEYWORDS: Optical tweezers, Absorption, Nanoparticles, Atmospheric particles, Photodiodes, Polarizers, Particles, Luminescence, Light scattering, Near infrared

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Proceedings Article | 4 May 2018 Paper

Determination of rotation in the pitch degree of freedom for a spherical birefringent particle

Basudev Roy, Avin Ramaiya, Erik Schäffer

Proceedings Volume 10672, 106720P (2018) https://doi.org/10.1117/12.2291626

KEYWORDS: Particles, Spherical lenses, Polarizers, Molecules, Video, Optical tweezers, Optical spheres, Liquid crystals, Refractive index, Birefringence

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Proceedings Article | 25 August 2015 Presentation + Paper

Studies on shape anisotropy in red blood cells

Basudev Roy, Argha Mondal, Sudipta Bera, Ayan Banerjee

Proceedings Volume 9548, 95481Z (2015) https://doi.org/10.1117/12.2191125

KEYWORDS: Particles, Optical tweezers, Scattering, Birefringence, Anisotropy, Blood, Motion measurement, Correlation function, Motion estimation, Polarimetry

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Proceedings Article | 25 August 2015 Presentation + Paper

Interesting physics and applications using microbubbles in thermo-optic tweezers

Basudev Roy, Subhrokoli Ghosh, Soumyajit Roy, Ayan Banerjee

Proceedings Volume 9548, 95480R (2015) https://doi.org/10.1117/12.2191123

KEYWORDS: Particles, Optical lithography, Optical tweezers, Polymer optical fibers, Composites, Crystals, Glasses, Molecules, Microscopes, Physics

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Proceedings Article | 15 June 2015 Paper

Writing with lasers: a new technique of controlled lithography using thermooptically manipulated microbubbles

Subhrokoli Ghosh, Basudev Roy, Shuvojit Paul, Santu Das, Soumyajit Roy, Ayan Banerjee

Proceedings Volume 9654, 965403 (2015) https://doi.org/10.1117/12.2192155

KEYWORDS: Crystals, Microscopes, Lithography, Glasses, Optical tweezers, Particles, Liquids, Polymers, Laser crystals, Absorption

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Proceedings Article | 30 September 2014 Paper

Interesting manifestations of spin orbit interaction and spin Hall shift of light in an optical trap

Basudev Roy, Nirmalya Ghosh, Subhasish Dutta Gupta, Ayan Banerjee

Proceedings Volume 9164, 91640M (2014) https://doi.org/10.1117/12.2063145

KEYWORDS: Polarization, Particles, Optical tweezers, Electroluminescent displays, Microscopes, Erbium, Magnetism, Wave propagation, Quartz, Light scattering

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Proceedings Article | 16 September 2014 Paper

Spontaneous revolution of micro-swimmers in a spherically aberrated optical trap

Basudev Roy, Argha Mondal, Soumyajit Roy, Ayan Banerjee

Proceedings Volume 9164, 91640G (2014) https://doi.org/10.1117/12.2067433

KEYWORDS: Particles, Scattering, Optical tweezers, Objectives, Gold, Microscopes, Gaussian beams, Light scattering, Laser scattering, Systems modeling

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Proceedings Article | 16 September 2014 Paper

A new technique for high sensitive detection of rotational motion in optical tweezers by a differential measurement of backscattered intensity

Basudev Roy, Sudipta Bera, Argha Mondal, Ayan Banerjee

Proceedings Volume 9164, 916414 (2014) https://doi.org/10.1117/12.2061245

KEYWORDS: Motion measurement, Particles, Optical tweezers, Polarization, Bragg cells, Motion detection, Birefringence, Light scattering, Scattering, Modulation

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Proceedings Article | 1 May 2012 Paper

A balanced, phase sensitive back-focal plane interferometry technique to determine dynamics of a trapped bead in optical tweezers

Basudev Roy, Sambit Bikas Pal, Arijit Haldar, Ratnesh Kumar Gupta, Nirmalya Ghosh, Ayan Banerjee

Proceedings Volume 8424, 84241Q (2012) https://doi.org/10.1117/12.921360

KEYWORDS: Phase measurement, Interferometers, Microscopes, Bragg cells, Motion measurement, Interferometry, Optical tweezers, Sensors, Photodiodes, Glasses

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Showing 5 of 22 publications

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