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Gvg Baranoski - One of the best experts on this subject based on the ideXlab platform.

  • A Cell-Based Light Interaction Model for Human Blood
    Computer Graphics Forum, 2012
    Co-Authors: Gvg Baranoski, Bradley W. Kimmel, Tenn F. Chen, Erik Miranda
    Abstract:

    The development of predictive appearance models for organic tissues is a challenging task due to the inherent complexity of these materials. In this paper, we closely examine the biophysical processes responsible for the appearance attributes of whole blood, one the most fundamental of these materials. We describe a new appearance model that simulates the mechanisms of Light propagation and absorption within the cellular and fluid portions of this specialized tissue. The proposed model employs a comprehensive, and yet flexible first principles approach based on the morphological, optical and biochemical properties of blood cells. This approach allows for environment driven changes in the cells' anatomy and orientation to be appropriately included into the Light transport simulations. The correctness and predictive capabilities of the proposed model are quantitatively and qualitatively evaluated through comparisons of modeled results with actual measured data and experimental observations reported in the scientific literature. Its incorporation into rendering systems is illustrated through images of blood samples depicting appearance variations controlled by physiologically meaningful parameters. Besides the contributions to the modeling of material appearance, the research presented in this paper is also expected to have applications in a wide range of biomedical areas, from optical diagnostics to the visualization and noninvasive imaging of blood-perfused tissues. © 2012 Wiley Periodicals, Inc.

  • On the predictive modeling of visible Light Interaction with fresh and environmentally stressed monocotyledonous leaves
    2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
    Co-Authors: Gvg Baranoski
    Abstract:

    The author has recently proposed a model to simulate Light Interactions with monocotyledonous (unifacial) leaves in the infrared domain. In this paper, we evaluate the applicability of this model to simulations performed in the visible (photosynthetic) domain, and aimed at the investigation of biophysical responses triggered by nutrient and water stress. The model's fidelity and predictability in this spectral domain are assessed through quantitative and qualitative comparisons of modeled results with measured data obtained for maize specimens. Its predictive capabilities are further demonstrated through the simulation of reflectance profiles resulting from experiments involving maize leaves under different water reduction procedures.

  • IGARSS (1) - On the predictive modeling of visible Light Interaction with fresh and environmentally stressed monocotyledonous leaves
    2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
    Co-Authors: Gvg Baranoski
    Abstract:

    The author has recently proposed a model to simulate Light Interactions with monocotyledonous (unifacial) leaves in the infrared domain. In this paper, we evaluate the applicability of this model to simulations performed in the visible (photosyn-thetic) domain, and aimed at the investigation of biophysical responses triggered by nutrient and water stress. The model's fidelity and predictability in this spectral domain are assessed through quantitative and qualitative comparisons of modeled results with measured data obtained for maize specimens. Its predictive capabilities are further demonstrated through the simulation of reflectance profiles resulting from experiments involving maize leaves under different water reduction procedures.

  • A Practical Analytical Approach for Predicting Sand Spectral Signatures
    IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
    Co-Authors: Bradley W. Kimmel, Gvg Baranoski
    Abstract:

    The authors have recently proposed a model, based on Monte Carlo methods, to simulate Light Interaction with sand. In this paper, principal component analysis (PCA) and regression techniques are applied to yield a compact analytical representation of the spectral reflectance signatures produced by the model. This analytical formulation compares well with the original model and is appropriate for applications demanding interactive rates.

  • A novel approach for simulating Light Interaction with particulate materials: application to the modeling of sand spectral properties.
    Optics Express, 2007
    Co-Authors: Bradley W. Kimmel, Gvg Baranoski
    Abstract:

    In this paper, we present a new spectral Light transport model for sand. The model employs a novel approach to simulate Light Interaction with particulate materials which yields both the spectral and spatial (bidirectional reflectance distribution function, or BRDF) responses of sand. Furthermore, the parameters specifying the model are based on the physical and mineralogical properties of sand. The model is evaluated quantitatively, through comparisons with measured data. Good spectral reconstructions were achieved for the reflectances of several real sand samples. The model was also evaluated qualitatively, and compares well with descriptions found in the literature. Its potential applications include, but are not limited to, applied optics, remote sensing and image synthesis.

Braulio García-cámara - One of the best experts on this subject based on the ideXlab platform.

  • Exploring the scattering directionality and Light Interaction in nanoparticle dimers of different semiconductors
    Photonics Letters of Poland, 2017
    Co-Authors: Ricardo Vergaz Benito, Braulio García-cámara, José Francisco Algorri, Alexander Cuadrado, José Manuel Sánchez-pena
    Abstract:

    Assuming as a starting point our recent work on a dimer of silicon nanoparticles with Light scattering directionality, we have explored the Light Interaction between the incoming and scattered electric fields in dimers made of other different semiconductors. The scattering directionality is achieved by accomplishing Kerker's conditions. By directing the scattered Light towards the gap of the dimer, interferential effects can be used to achieve high or low Light intensities as a basis of all-optical nanoswitches. A comparison between dimers of different materials is shown. Full Text: PDF References R. Gomez-Medina, B. Garcia-Camara, I. Suarez-Lacalle, F. Gonzalez, F. Moreno, M. Nieto-Vesperias and J.J. Saenz, "Electric and magnetic dipolar response of germanium nanospheres: interference effects, scattering anisotropy, and optical forces", J. Nanophoton. 5 053512 (2011). CrossRef B. Rolly, B. Stout and N. Bonod, "Boosting the directivity of optical antennas with magnetic and electric dipolar resonant particles", Opt. Express 20 20376 (2012). CrossRef B. Garcia-Camara, R. Gomez-Medina, J.J. Saenz, and B. Sepulveda, "Sensing with magnetic dipolar resonances in semiconductor nanospheres", Opt. Express 21 23007-23020 (2013). CrossRef B. Garcia-Camara et al., "All-Optical Nanometric Switch Based on the Directional Scattering of Semiconductor Nanoparticles", J. Phys. Chem. C. 119, 19558?19564 (2015). CrossRef A.I. Barreda, H. Saleh, A. Litman, F. Gonzalez, J-M. Geffrin, and F. Moreno, "Electromagnetic polarization-controlled perfect switching effect with high-refractive-index dimers and the beam-splitter configuration", Nat. Commun. 8, 13910 (2017). CrossRef R. Vergaz et al., "Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality", IEE Phot. Jour., 8(3), 4501410 (2016) CrossRef B. Garcia-Camara et al., "Size Dependence of the Directional Scattering Conditions on Semiconductor Nanoparticles", IEEE Photon. Technol. Lett. 27(19), 2059?2062 (2015). CrossRef

  • Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality
    IEEE Photonics Journal, 2016
    Co-Authors: R. Vergaz, Alexander Cuadrado, José Francisco Algorri, José Manuel Sánchez-pena, Braulio García-cámara
    Abstract:

    Dimers of nanoparticles are very interesting for several devices due to the possibility of obtaining intense Light concentrations in the gap between them. A dynamic control of this Interaction to obtain either the maximum or minimum Light through interferential effects could be also relevant for a multitude of devices such as chemical sensors or all-optical devices for interchip/intrachip communications. Semiconductor nanoparticles satisfying Kerker conditions present an anisotropic scattering distribution with a minimum in either the forward or the backward direction and prominent scattering in the contrary direction. The reduction or enhancement of the electromagnetic field in a certain direction can minimize or maximize the Interaction with neighboring nanoparticles. In this paper, we consider a dimer of nanoparticles such that each component satisfies each one of the Kerker conditions. Depending on the arrangement of the nanoparticles with respect to the impinging Light direction, we can produce a minimum or a maximum of the electric field between them, reducing or maximizing the interferential effects. The strong dependence of the directional conditions with external conditions, such as the incident wavelength, can be used to dynamically control the Light concentration in the gap.

José Manuel Sánchez-pena - One of the best experts on this subject based on the ideXlab platform.

  • Exploring the scattering directionality and Light Interaction in nanoparticle dimers of different semiconductors
    Photonics Letters of Poland, 2017
    Co-Authors: Ricardo Vergaz Benito, Braulio García-cámara, José Francisco Algorri, Alexander Cuadrado, José Manuel Sánchez-pena
    Abstract:

    Assuming as a starting point our recent work on a dimer of silicon nanoparticles with Light scattering directionality, we have explored the Light Interaction between the incoming and scattered electric fields in dimers made of other different semiconductors. The scattering directionality is achieved by accomplishing Kerker's conditions. By directing the scattered Light towards the gap of the dimer, interferential effects can be used to achieve high or low Light intensities as a basis of all-optical nanoswitches. A comparison between dimers of different materials is shown. Full Text: PDF References R. Gomez-Medina, B. Garcia-Camara, I. Suarez-Lacalle, F. Gonzalez, F. Moreno, M. Nieto-Vesperias and J.J. Saenz, "Electric and magnetic dipolar response of germanium nanospheres: interference effects, scattering anisotropy, and optical forces", J. Nanophoton. 5 053512 (2011). CrossRef B. Rolly, B. Stout and N. Bonod, "Boosting the directivity of optical antennas with magnetic and electric dipolar resonant particles", Opt. Express 20 20376 (2012). CrossRef B. Garcia-Camara, R. Gomez-Medina, J.J. Saenz, and B. Sepulveda, "Sensing with magnetic dipolar resonances in semiconductor nanospheres", Opt. Express 21 23007-23020 (2013). CrossRef B. Garcia-Camara et al., "All-Optical Nanometric Switch Based on the Directional Scattering of Semiconductor Nanoparticles", J. Phys. Chem. C. 119, 19558?19564 (2015). CrossRef A.I. Barreda, H. Saleh, A. Litman, F. Gonzalez, J-M. Geffrin, and F. Moreno, "Electromagnetic polarization-controlled perfect switching effect with high-refractive-index dimers and the beam-splitter configuration", Nat. Commun. 8, 13910 (2017). CrossRef R. Vergaz et al., "Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality", IEE Phot. Jour., 8(3), 4501410 (2016) CrossRef B. Garcia-Camara et al., "Size Dependence of the Directional Scattering Conditions on Semiconductor Nanoparticles", IEEE Photon. Technol. Lett. 27(19), 2059?2062 (2015). CrossRef

  • Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality
    IEEE Photonics Journal, 2016
    Co-Authors: R. Vergaz, Alexander Cuadrado, José Francisco Algorri, José Manuel Sánchez-pena, Braulio García-cámara
    Abstract:

    Dimers of nanoparticles are very interesting for several devices due to the possibility of obtaining intense Light concentrations in the gap between them. A dynamic control of this Interaction to obtain either the maximum or minimum Light through interferential effects could be also relevant for a multitude of devices such as chemical sensors or all-optical devices for interchip/intrachip communications. Semiconductor nanoparticles satisfying Kerker conditions present an anisotropic scattering distribution with a minimum in either the forward or the backward direction and prominent scattering in the contrary direction. The reduction or enhancement of the electromagnetic field in a certain direction can minimize or maximize the Interaction with neighboring nanoparticles. In this paper, we consider a dimer of nanoparticles such that each component satisfies each one of the Kerker conditions. Depending on the arrangement of the nanoparticles with respect to the impinging Light direction, we can produce a minimum or a maximum of the electric field between them, reducing or maximizing the interferential effects. The strong dependence of the directional conditions with external conditions, such as the incident wavelength, can be used to dynamically control the Light concentration in the gap.

Alexander Cuadrado - One of the best experts on this subject based on the ideXlab platform.

  • Exploring the scattering directionality and Light Interaction in nanoparticle dimers of different semiconductors
    Photonics Letters of Poland, 2017
    Co-Authors: Ricardo Vergaz Benito, Braulio García-cámara, José Francisco Algorri, Alexander Cuadrado, José Manuel Sánchez-pena
    Abstract:

    Assuming as a starting point our recent work on a dimer of silicon nanoparticles with Light scattering directionality, we have explored the Light Interaction between the incoming and scattered electric fields in dimers made of other different semiconductors. The scattering directionality is achieved by accomplishing Kerker's conditions. By directing the scattered Light towards the gap of the dimer, interferential effects can be used to achieve high or low Light intensities as a basis of all-optical nanoswitches. A comparison between dimers of different materials is shown. Full Text: PDF References R. Gomez-Medina, B. Garcia-Camara, I. Suarez-Lacalle, F. Gonzalez, F. Moreno, M. Nieto-Vesperias and J.J. Saenz, "Electric and magnetic dipolar response of germanium nanospheres: interference effects, scattering anisotropy, and optical forces", J. Nanophoton. 5 053512 (2011). CrossRef B. Rolly, B. Stout and N. Bonod, "Boosting the directivity of optical antennas with magnetic and electric dipolar resonant particles", Opt. Express 20 20376 (2012). CrossRef B. Garcia-Camara, R. Gomez-Medina, J.J. Saenz, and B. Sepulveda, "Sensing with magnetic dipolar resonances in semiconductor nanospheres", Opt. Express 21 23007-23020 (2013). CrossRef B. Garcia-Camara et al., "All-Optical Nanometric Switch Based on the Directional Scattering of Semiconductor Nanoparticles", J. Phys. Chem. C. 119, 19558?19564 (2015). CrossRef A.I. Barreda, H. Saleh, A. Litman, F. Gonzalez, J-M. Geffrin, and F. Moreno, "Electromagnetic polarization-controlled perfect switching effect with high-refractive-index dimers and the beam-splitter configuration", Nat. Commun. 8, 13910 (2017). CrossRef R. Vergaz et al., "Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality", IEE Phot. Jour., 8(3), 4501410 (2016) CrossRef B. Garcia-Camara et al., "Size Dependence of the Directional Scattering Conditions on Semiconductor Nanoparticles", IEEE Photon. Technol. Lett. 27(19), 2059?2062 (2015). CrossRef

  • Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality
    IEEE Photonics Journal, 2016
    Co-Authors: R. Vergaz, Alexander Cuadrado, José Francisco Algorri, José Manuel Sánchez-pena, Braulio García-cámara
    Abstract:

    Dimers of nanoparticles are very interesting for several devices due to the possibility of obtaining intense Light concentrations in the gap between them. A dynamic control of this Interaction to obtain either the maximum or minimum Light through interferential effects could be also relevant for a multitude of devices such as chemical sensors or all-optical devices for interchip/intrachip communications. Semiconductor nanoparticles satisfying Kerker conditions present an anisotropic scattering distribution with a minimum in either the forward or the backward direction and prominent scattering in the contrary direction. The reduction or enhancement of the electromagnetic field in a certain direction can minimize or maximize the Interaction with neighboring nanoparticles. In this paper, we consider a dimer of nanoparticles such that each component satisfies each one of the Kerker conditions. Depending on the arrangement of the nanoparticles with respect to the impinging Light direction, we can produce a minimum or a maximum of the electric field between them, reducing or maximizing the interferential effects. The strong dependence of the directional conditions with external conditions, such as the incident wavelength, can be used to dynamically control the Light concentration in the gap.

José Francisco Algorri - One of the best experts on this subject based on the ideXlab platform.

  • Exploring the scattering directionality and Light Interaction in nanoparticle dimers of different semiconductors
    Photonics Letters of Poland, 2017
    Co-Authors: Ricardo Vergaz Benito, Braulio García-cámara, José Francisco Algorri, Alexander Cuadrado, José Manuel Sánchez-pena
    Abstract:

    Assuming as a starting point our recent work on a dimer of silicon nanoparticles with Light scattering directionality, we have explored the Light Interaction between the incoming and scattered electric fields in dimers made of other different semiconductors. The scattering directionality is achieved by accomplishing Kerker's conditions. By directing the scattered Light towards the gap of the dimer, interferential effects can be used to achieve high or low Light intensities as a basis of all-optical nanoswitches. A comparison between dimers of different materials is shown. Full Text: PDF References R. Gomez-Medina, B. Garcia-Camara, I. Suarez-Lacalle, F. Gonzalez, F. Moreno, M. Nieto-Vesperias and J.J. Saenz, "Electric and magnetic dipolar response of germanium nanospheres: interference effects, scattering anisotropy, and optical forces", J. Nanophoton. 5 053512 (2011). CrossRef B. Rolly, B. Stout and N. Bonod, "Boosting the directivity of optical antennas with magnetic and electric dipolar resonant particles", Opt. Express 20 20376 (2012). CrossRef B. Garcia-Camara, R. Gomez-Medina, J.J. Saenz, and B. Sepulveda, "Sensing with magnetic dipolar resonances in semiconductor nanospheres", Opt. Express 21 23007-23020 (2013). CrossRef B. Garcia-Camara et al., "All-Optical Nanometric Switch Based on the Directional Scattering of Semiconductor Nanoparticles", J. Phys. Chem. C. 119, 19558?19564 (2015). CrossRef A.I. Barreda, H. Saleh, A. Litman, F. Gonzalez, J-M. Geffrin, and F. Moreno, "Electromagnetic polarization-controlled perfect switching effect with high-refractive-index dimers and the beam-splitter configuration", Nat. Commun. 8, 13910 (2017). CrossRef R. Vergaz et al., "Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality", IEE Phot. Jour., 8(3), 4501410 (2016) CrossRef B. Garcia-Camara et al., "Size Dependence of the Directional Scattering Conditions on Semiconductor Nanoparticles", IEEE Photon. Technol. Lett. 27(19), 2059?2062 (2015). CrossRef

  • Control of the Light Interaction in a Semiconductor Nanoparticle Dimer Through Scattering Directionality
    IEEE Photonics Journal, 2016
    Co-Authors: R. Vergaz, Alexander Cuadrado, José Francisco Algorri, José Manuel Sánchez-pena, Braulio García-cámara
    Abstract:

    Dimers of nanoparticles are very interesting for several devices due to the possibility of obtaining intense Light concentrations in the gap between them. A dynamic control of this Interaction to obtain either the maximum or minimum Light through interferential effects could be also relevant for a multitude of devices such as chemical sensors or all-optical devices for interchip/intrachip communications. Semiconductor nanoparticles satisfying Kerker conditions present an anisotropic scattering distribution with a minimum in either the forward or the backward direction and prominent scattering in the contrary direction. The reduction or enhancement of the electromagnetic field in a certain direction can minimize or maximize the Interaction with neighboring nanoparticles. In this paper, we consider a dimer of nanoparticles such that each component satisfies each one of the Kerker conditions. Depending on the arrangement of the nanoparticles with respect to the impinging Light direction, we can produce a minimum or a maximum of the electric field between them, reducing or maximizing the interferential effects. The strong dependence of the directional conditions with external conditions, such as the incident wavelength, can be used to dynamically control the Light concentration in the gap.