Dr. Sivakumar Ramachandran Narayanswamy Profile

Dr. Sivakumar Ramachandran Narayanswamy

SDL Author at Concordia Univ

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Author

Publications (14)

Proceedings Article | 5 March 2021 Presentation

Bioprinting 3D angiogenesis models with Laser Induced Side Transfer

Sayadeh Sara Hosseini Kolkooh, Hamid Ebrahimi Orimi, Erika Hooker, Sivakumar Narayanswamy, Bruno Larrivee, Christos Boutopoulos

Proceedings Volume 11647, 116471D (2021) https://doi.org/10.1117/12.2584573

KEYWORDS: 3D modeling, Capillaries, 3D displays, Veins, Tissues, Tissue engineering, Printing, Laser energy, Laser applications, Glasses

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Proceedings Article | 19 February 2018 Paper

Experimental investigation of texturing complex geometry using high repetition nano laser and comparison with the simulated COMSOL model

H. Ebrahimi Orimi, S. Jagadeesh, S. Narayanswamy

Proceedings Volume 10520, 105201X (2018) https://doi.org/10.1117/12.2298770

KEYWORDS: Optical simulations, Pulsed laser operation, Data acquisition, Micromachining, Semiconductor lasers, Laser scattering, Heat flux, Radium, Silicon, MATLAB

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Proceedings Article | 19 February 2018 Paper

Innovative approaches for coordinate extraction of curved shape and analyzing the effect of process parameters on the quality of the laser micro-machined surface

S. Jagadeesh, H. Ebrahimi Orimi, S. Narayanswamy

Proceedings Volume 10520, 105201Y (2018) https://doi.org/10.1117/12.2299388

KEYWORDS: Image processing, Data acquisition, Microfluidics, MATLAB, Micromachining, Silicon, Image quality, Shape analysis, Manufacturing

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SPIE Journal Paper | 4 May 2012 Open Access

Optimized off-axis cylindrical mirror-focused line-scanning system for optical coherence tomography imaging applications

Mohammad Kamal, Narayanswamy Sivakumar, Muthukumaran Packirisamy

JBO, Vol. 17, Issue 5, 056006, (May 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.5.056006

KEYWORDS: Mirrors, Imaging systems, Optical coherence tomography, Optical scanning systems, Coherence imaging, Zemax, Light sources, Off axis mirrors, Collimation, Optical imaging

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Proceedings Article | 8 September 2011 Paper

Design of spectrometer for high-speed line field optical coherence tomography

Mohammad Kamal, Sivakumar Narayanswamy, Muthukumaran Packirisamy

Proceedings Volume 8007, 80071J (2011) https://doi.org/10.1117/12.905578

KEYWORDS: Spectroscopy, Reflectivity, Optical coherence tomography, Spectrometer engineering, Mirrors, Optical design, Imaging systems, Charge-coupled devices, Colorimetry, Coherence imaging

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Proceedings Article | 23 September 2010 Paper

Design of a spectrometer for all-reflective optics-based line scan Fourier domain optical coherence tomography

Mohammad Kamal, Narayanswamy Sivakumar, Muthukumaran Packirisamy

Proceedings Volume 7750, 775020 (2010) https://doi.org/10.1117/12.873105

KEYWORDS: Spectroscopy, Optical coherence tomography, Reflectivity, Mirrors, Optical design, Spectrometer engineering, Sensors, Scanners, Detector arrays, Chromatic aberrations

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Proceedings Article | 5 August 2009 Paper

Optical modeling of a line-scan optical coherence tomography system for high-speed three-dimensional endoscopic imaging

Mohammad Kamal, Narayanswamy Sivakumar, Muthukumaran Packirisamy

Proceedings Volume 7386, 738607 (2009) https://doi.org/10.1117/12.839593

KEYWORDS: Mirrors, Scanners, Optical coherence tomography, Imaging systems, Zemax, 3D modeling, Endoscopy, 3D image processing, Line scan image sensors, Micromirrors

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Proceedings Article | 5 August 2009 Paper

Temporal phase shifting method using acoustic-optic modulated stroboscopic interferometer (AOMSI) for characterization of microstructures

Davoud Mohammadalizadeh, Muthukumaran Packirisamy, Narayanswamy Sivakumar

Proceedings Volume 7386, 73861I (2009) https://doi.org/10.1117/12.839522

KEYWORDS: Phase shifting, Interferometry, Modulation, Bragg cells, Interferometers, Phase shifts, Acoustics, Semiconducting wafers, Glasses, Diffraction

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Proceedings Article | 12 August 2008 Paper

Strain distribution and sensitivity in fiber Bragg grating sensors

C. Dadpay, N. Sivakumar, N. Mrad

Proceedings Volume 7099, 70992E (2008) https://doi.org/10.1117/12.807190

KEYWORDS: Coating, Sensors, Fiber Bragg gratings, Adhesives, Gold, Optical fibers, Finite element methods, Structured optical fibers, Structural health monitoring, Fiber coatings

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Proceedings Article | 8 September 2006 Paper

Theoretical modeling of acousto-optic modulated stroboscopic interferometer

Murali Manohar Pai Sreenivasan, N. Sivakumar, M. Packirisamy

Proceedings Volume 6343, 634322 (2006) https://doi.org/10.1117/12.707923

KEYWORDS: Microelectromechanical systems, Interferometers, Bragg cells, Modulation, CCD cameras, Crystals, Visualization, Acousto-optics, Laser Doppler velocimetry, Static characterization

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Proceedings Article | 12 July 2006 Paper

Determination of measurement uncertainty in the developed instantaneous phase shifting interferometer

N. Sivakumar, B. Tan, K. Venkatakrishnan

Proceedings Volume 6342, 63421W (2006) https://doi.org/10.1117/12.692232

KEYWORDS: Phase shifting, Diamond, Wave plates, Calibration, Interferometers, Beam splitters, Image processing, Mirrors, Phase shifts, Charge-coupled devices

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Proceedings Article | 22 January 2005 Paper

Modeling of electrostatically actuated cylindrical-waveguide-based optical microsystem

Srinivasa Pendyala, Muthukumaran Packirisamy, Ion Stiharu, Narayanswamy Sivakumar, Vahe Nerguizian

Proceedings Volume 5719, (2005) https://doi.org/10.1117/12.591368

KEYWORDS: Electrodes, Waveguides, Signal attenuation, Gold, Optical fibers, Actuators, Optical microsystems, Microopto electromechanical systems, Systems modeling, Optical attenuators

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SPIE Journal Paper | 1 February 2003

Large surface profile measurement with instantaneous phase-shifting interferometry

N. Sivakumar, W. Hui, Krishnan Venkatakrishnan, B. Ngoi

OE, Vol. 42, Issue 02, (February 2003) https://doi.org/10.1117/12.10.1117/1.1532331

KEYWORDS: Phase shifts, Semiconducting wafers, Wave plates, Beam splitters, Polarizers, Cameras, Phase interferometry, Michelson interferometers, Polarization, Speckle

Proceedings Article | 15 January 2003 Paper

Fabrication of planar grating by direct ablation using ultrashort-pulse laser with a novel optical configuration

N. R. Sivakumar, Krishnan Venkatakrishnan, Bo Tan, Bryan Ngoi

Proceedings Volume 4979, (2003) https://doi.org/10.1117/12.478296

KEYWORDS: Pulsed laser operation, Laser ablation, Fabrication, Prisms, Femtosecond phenomena, Ultrafast phenomena, Silicon, Laser damage threshold, Micromachining, Scanning electron microscopy

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Showing 5 of 14 publications

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