Dr. Duncan J. Maitland Profile

Dr. Duncan J. Maitland

Professor at Texas A&M Univ

SPIE Involvement:

Author

Publications (21)

SPIE Journal Paper | 1 March 2008 Open Access

Fabrication and characterization of cylindrical light diffusers comprised of shape memory polymer

Ward Small, Patrick Buckley, Thomas Wilson, Jeffrey Loge, Kristen Maitland, Duncan Maitland

JBO, Vol. 13, Issue 02, 024018, (March 2008) https://doi.org/10.1117/12.10.1117/1.2904952

KEYWORDS: Diffusers, Optical fibers, Diffusion, Shape memory polymers, Foam, Sensors, Biomedical optics, Absorption, Laser damage threshold, Integrating spheres

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SPIE Journal Paper | 1 May 2007 Open Access

Prototype laser-activated shape memory polymer foam device for embolic treatment of aneurysms

Duncan Maitland, Ward Small, Jason Ortega, Patrick Buckley, Jennifer Rodriguez, Jonathan Hartman, Thomas Wilson

JBO, Vol. 12, Issue 03, 030504, (May 2007) https://doi.org/10.1117/12.10.1117/1.2743983

KEYWORDS: Foam, Shape memory polymers, Prototyping, Optical fibers, Polymers, Data modeling, Instrument modeling, Neck, Arteries, Semiconductor lasers

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Proceedings Article | 12 November 2005 Paper

Shape memory polymer therapeutic devices for stroke

Thomas Wilson, Ward Small IV, William Benett, Jane Bearinger, Duncan Maitland

Proceedings Volume 6007, 60070R (2005) https://doi.org/10.1117/12.630873

KEYWORDS: Polymers, Shape memory polymers, Microactuators, Optical fibers, Ischemic stroke, Polyurethane, Glasses, Biomedical optics, Aluminum, Blood circulation

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SPIE Journal Paper | 1 July 2002 Open Access

Comparative study of polarized light propagation in biologic tissues

Vanitha Sankaran, Joseph Walsh, Duncan Maitland

JBO, Vol. 7, Issue 03, (July 2002) https://doi.org/10.1117/12.10.1117/1.1483318

KEYWORDS: Tissues, Polarization, Light scattering, Scattering, Blood, Optical fibers, Birefringence, Arteries, Sensors, Geometrical optics

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Proceedings Article | 21 June 2002 Paper

Laser-activated shape memory polymer microactuators for treating stroke

Duncan Maitland, Thomas Wilson, Melodie Metzger, Daniel Schumann

Proceedings Volume 4626, (2002) https://doi.org/10.1117/12.472105

KEYWORDS: Microactuators, Ischemic stroke, Shape memory polymers, Shape memory alloys, Optical properties, Blood, Absorption, Actuators, Blood vessels, Temperature metrology

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Proceedings Article | 28 April 2000 Paper

Monte-Carlo simulations of arterial imaging with optical coherence tomography

Peter Amendt, Kent Estabrook, Matthew Everett, Richard London, Duncan Maitland, George Zimmerman, Bill Colston, Luiz Da Silva, Ujwal Sathyam

Proceedings Volume 3915, (2000) https://doi.org/10.1117/12.384157

KEYWORDS: Scattering, Optical coherence tomography, Monte Carlo methods, Mie scattering, Laser scattering, Photon transport, Signal detection, Anisotropy, Coherence imaging, Tissue optics

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Proceedings Article | 28 April 2000 Paper

Polarized light propagation through tissue and tissue phantoms

Vanitha Sankaran, Joseph Walsh, Duncan Maitland

Proceedings Volume 3915, (2000) https://doi.org/10.1117/12.384154

KEYWORDS: Tissues, Polarization, Tissue optics, Optical spheres, Scattering, Mie scattering, Blood, Rayleigh scattering, Light scattering, Particles

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Proceedings Article | 6 April 2000 Paper

Polarized light propagation in biologic tissue and tissue phantoms

Vanitha Sankaran, Joseph Walsh, Duncan Maitland

Proceedings Volume 4001, (2000) https://doi.org/10.1117/12.381526

KEYWORDS: Tissues, Polarization, Optical spheres, Tissue optics, Scattering, Light scattering, Mie scattering, Blood, Rayleigh scattering, Photons

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Proceedings Article | 30 April 1999 Paper

Polarized light propagation in turbid media

Vanitha Sankaran, Duncan Maitland, Joseph Walsh

Proceedings Volume 3598, (1999) https://doi.org/10.1117/12.347485

KEYWORDS: Polarization, Tissues, Tissue optics, Light scattering, Scattering, Photons, Birefringence, Linear polarizers, Spherical lenses, Polarizers

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Proceedings Article | 14 January 1998 Paper

Simulation studies of vapor bubble generation by short-pulse lasers

Peter Amendt, Richard London, Moshe Strauss, Michael Glinsky, Duncan Maitland, Peter Celliers, Steven Visuri, David Bailey, David Young, Darwin Ho, Charles Lin, Michael Kelly

Proceedings Volume 3195, (1998) https://doi.org/10.1117/12.297909

KEYWORDS: Absorption, Optical simulations, Computer simulations, Laser applications, Laser vision correction, Fiber optics, Laser energy, Pulsed laser operation, Picosecond phenomena, Laser development

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SPIE Journal Paper | 1 January 1998 Open Access

Experimental and computational laser tissue welding using a protein patch

Ward Small, Nicholas Heredia, Duncan Maitland, David Eder, Peter Celliers, Luiz Da Silva, Richard London, Dennis Matthews

JBO, Vol. 3, Issue 01, (January 1998) https://doi.org/10.1117/12.10.1117/1.429866

KEYWORDS: Laser tissue interaction, Natural surfaces, Laser welding, Monte Carlo methods, Tissues, Temperature metrology, Optical simulations, Proteins, Infrared radiation, Arteries

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Proceedings Article | 16 June 1997 Paper

Computational modeling of stress transient and bubble evolution in short-pulse laser-irradiated melanosome particles

Moshe Strauss, Peter Amendt, Richard London, Duncan Maitland, Michael Glinsky, Charles Lin, Michael Kelly

Proceedings Volume 2975, (1997) https://doi.org/10.1117/12.275491

KEYWORDS: Absorption, Particles, Pulsed laser operation, Laser energy, Optical simulations, Injuries, Atmospheric particles, Laser damage threshold, Superposition, Laser irradiation

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Laser injury by sub-nanosecond pulses in the eye and skin is related to strongly absorbing pigment particles such as melanin with dimension of order 10-15 nm. Single melanosomes, with size of approximately 1 micrometers and containing many such melanin particles, were isolated in water and irradiated with 100 psec pulses. Using time resolved imaging techniques, they observed the emission of a strong shock wave followed by rapid bubble expansion on a nanosecond timescale. The shock had a supersonic speed of approximately 2700 m/sec and an initial pressure of nearly 35 kbars. The shock wave can induce further tissue damage in addition to that produced by the bubble expansion and reduce the threshold for laser damage in the retina. In this work we simulate the system by using the hydrodynamic computer code LATIS with a realistic equation of state for water. We simulate both isolated melanin particles and whole melanosomes. Our melanosome model considers a spherical structure of order 1 micrometers in diameter with a uniform energy. This is consistent with the fact that the melanin particles are not stress confined while the melanosome is almost stress confined; thus, the pressure builds up uniformly in the melanosome. The details of the dynamics of the supersonic shock wave emission and rapid bubble evolution on both the melanin and melanosome scales are investigated. Comparison between modeling and experiments is presented. In order to achieve peak pressures and shock speeds comparable to the reported values, it is necessary to model the melanosome as having an absorption coefficient of approximately 6000 cm^-1. Another way to achieve agreement with experiment is if the superposition of shock waves from the many melanin particles inside the melanosome produces a stronger shock than calculated by assuming a smooth absorption, as in our melanosome model. A better experimental determination of the values of linear and non- linear absorption coefficients for a single melanosome is needed in order to decide between the two approaches.

Proceedings Article | 16 June 1997 Paper

Simulations of laser-initiated stress waves

Duncan Maitland, Peter Celliers, Peter Amendt, Luiz Da Silva, Richard London, Dennis Matthews, Moshe Strauss, Steven Visuri

Proceedings Volume 2975, (1997) https://doi.org/10.1117/12.275489

KEYWORDS: Absorption, Refractive index, Water, Monte Carlo methods, Cavitation, Optical simulations, Fiber lasers, Pulsed laser operation, Laser energy, Wave propagation

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Proceedings Article | 16 June 1997 Paper

Modeling of bubble dynamics in relation to medical applications

Peter Amendt, Moshe Strauss, Richard London, Michael Glinsky, Duncan Maitland, Peter Celliers, Steven Visuri, David Bailey, David Young, Darwin Ho

Proceedings Volume 2975, (1997) https://doi.org/10.1117/12.275500

KEYWORDS: Interfaces, Absorption, Laser therapeutics, Acoustics, Modeling, Laser vision correction, Laser applications, Laser safety, Spherical lenses, Data modeling

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Proceedings Article | 22 May 1997 Paper

Laser welding and collagen crosslinks

Karen Reiser, Ward Small, Duncan Maitland, Nicholas Heredia, Luiz Da Silva, Dennis Matthews, Jerold Last

Proceedings Volume 2970, (1997) https://doi.org/10.1117/12.275052

KEYWORDS: Collagen, Semiconductor lasers, Laser welding, Laser tissue interaction, Tissues, Laser stabilization, Wound healing, Sodium, Indocyanine green, Biological research

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Proceedings Article | 22 May 1997 Paper

In vivo argon laser vascular welding using thermal feedback: open- and closed-loop patency and collagen crosslinking

Ward Small, Peter Celliers, George Kopchok, Karen Reiser, Nicholas Heredia, Duncan Maitland, David Eder, Richard London, Mauricio Heilbron, Farabi Hussain, Rodney White, Luiz Da Silva, Dennis Matthews

Proceedings Volume 2970, (1997) https://doi.org/10.1117/12.275050

KEYWORDS: Argon ion lasers, Feedback control, Collagen, Tissues, Optical fibers, In vivo imaging, Control systems, Natural surfaces, Veins, Infrared radiation

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Proceedings Article | 17 May 1996 Paper

Computational modeling of laser thrombolysis for stroke treatment

Moshe Strauss, Peter Amendt, Richard London, Duncan Maitland, Michael Glinsky, Peter Celliers, David Bailey, David Young, Steven Jacques

Proceedings Volume 2671, (1996) https://doi.org/10.1117/12.240007

KEYWORDS: Blood, Laser energy, Tissues, Water, Laser therapeutics, Absorption, Computational modeling, Pulsed laser operation, Failure analysis, Cavitation

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Proceedings Article | 17 May 1996 Paper

Laser tissue welding mediated with a protein solder

Ward Small, Nicholas Heredia, Peter Celliers, Luiz Da Silva, David Eder, Michael Glinsky, Richard London, Duncan Maitland, Dennis Matthews, Barbara Soltz

Proceedings Volume 2671, (1996) https://doi.org/10.1117/12.240016

KEYWORDS: Natural surfaces, Tissues, Laser welding, Proteins, Laser tissue interaction, Arteries, Fusion energy, Semiconductor lasers, Indocyanine green, Infrared detection

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Proceedings Article | 17 May 1996 Paper

Dynamic simulations of tissue welding

Duncan Maitland, David Eder, Richard London, Michael Glinsky, Barbara Soltz

Proceedings Volume 2671, (1996) https://doi.org/10.1117/12.240013

KEYWORDS: Tissues, Skin, Diffusion, Natural surfaces, Laser tissue interaction, Computer simulations, Thermal modeling, Tissue optics, Optical simulations, Laser welding

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