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1,393 results on '"Dominguez G."'

1. Mechanoactivation of chromium silicide formation in the SiC-Cr-Si system

Author

Vlasova M., Kakazey M., Gonzales-Rodriguez J.G., Dominguez G., Ristić Momčilo M., Scherbina O., Tomila T., Isaeva L., Timofeeva I.I., and Bukov A.

Subjects
silicon carbide, chromium, silicon, comminution, chromium silicides, Chemical technology, TP1-1185
Abstract

The processes of simultaneous grinding of the components of a SiC-Cr-Si mixture and further temperature treatment in the temperature range 1073-1793 K were studied by X-ray phase analysis, IR spectroscopy, electron microscopy, and X-ray microanalysis. It was established that, during grinding of the mixture, chromium silicides form. A temperature treatment completes the process. Silicide formation proceeds within the framework of the diffusion of silicon into chromium. In the presence of SiO2 in the mixture, silicide formation occurs also as a result of the reduction of silica by silicon and silicon carbide. The sintering of synthesized composite SiC-chromium silicides powders at a high temperature under a high pressure (T = 2073 K, P = 5 GPa) is accompanied by the destruction of cc-SiC particles, the cc/3 transition in silicon carbide and deformation distortions of the lattices of chromium silicides.

Published
2002
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2. Cosmic Ray Induced Mass-Independent Oxygen Isotope Exchange: A Novel Mechanism for Producing $^{16}$O depletions in the Early Solar System

Author

Dominguez, G., Lucas, J., Tafla, L., Liu, M. C., and McKeegan, K.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

A fundamental puzzle of our solar system's formation is understanding why the terrestrial bodies including the planets,comets,and asteroids are depleted in $^{16}$O compared to the Sun. The most favored mechanism,the selective photodissociation of CO gas to produce $^{16}$O depleted water,requires finely tuned mixing timescales to transport $^{16}$O depleted water from the cold outer solar system to exchange isotopically with dust grains to produce the $^{16}$O depleted planetary bodies observed today. Here we show that energetic particle irradiation of SiO$_2$ (and Al$_2$O$_3$) makes them susceptible to anomalous isotope exchange with H$_2$O ice at temperatures as low as 10 K. The observed magnitude of the anomalous isotope exchange (D$^{17}$O) is sufficient to generate the $^{16}$O depletion characteristic of the terrestrial bodies in the solar system. We calculated the cosmic-ray exposure times needed to produce the observed $^{16}$O depletions in silicate (SiO2) dust in the interstellar medium and early solar system and find that radiation damage induced oxygen isotope exchange could have rapidly (~10-100 yrs) depleted dust grains of $^{16}$O during the Sun's T-Tauri phase. Our model explains whythe oldest and most refractory minerals found in the solar system, the anhydrous Calcium with Aluminum Inclusions (CAIs),are generally $^{16}$O enriched compared to chondrules and the bulk terrestrial solids and provides a mechanism for producing $^{16}$O depleted grains very early in the solar system's history. Our findings have broad implications for the distribution of oxygen isotopes in the solar system, the interstellar medium, the formation of the planets and its building blocks as well as the nature of mass-independent isotope effects.

Published
2021

3. Computational approaches to Explainable Artificial Intelligence: Advances in theory, applications and trends

Author

Górriz, J.M., Álvarez-Illán, I., Álvarez-Marquina, A., Arco, J.E., Atzmueller, M., Ballarini, F., Barakova, E., Bologna, G., Bonomini, P., Castellanos-Dominguez, G., Castillo-Barnes, D., Cho, S.B., Contreras, R., Cuadra, J.M., Domínguez, E., Domínguez-Mateos, F., Duro, R.J., Elizondo, D., Fernández-Caballero, A., Fernandez-Jover, E., Formoso, M.A., Gallego-Molina, N.J., Gamazo, J., González, J. García, Garcia-Rodriguez, J., Garre, C., Garrigós, J., Gómez-Rodellar, A., Gómez-Vilda, P., Graña, M., Guerrero-Rodriguez, B., Hendrikse, S.C.F., Jimenez-Mesa, C., Jodra-Chuan, M., Julian, V., Kotz, G., Kutt, K., Leming, M., de Lope, J., Macas, B., Marrero-Aguiar, V., Martinez, J.J., Martinez-Murcia, F.J., Martínez-Tomás, R., Mekyska, J., Nalepa, G.J., Novais, P., Orellana, D., Ortiz, A., Palacios-Alonso, D., Palma, J., Pereira, A., Pinacho-Davidson, P., Pinninghoff, M.A., Ponticorvo, M., Psarrou, A., Ramírez, J., Rincón, M., Rodellar-Biarge, V., Rodríguez-Rodríguez, I., Roelofsma, P.H.M.P., Santos, J., Salas-Gonzalez, D., Salcedo-Lagos, P., Segovia, F., Shoeibi, A., Silva, M., Simic, D., Suckling, J., Treur, J., Tsanas, A., Varela, R., Wang, S.H., Wang, W., Zhang, Y.D., Zhu, H., Zhu, Z., and Ferrández-Vicente, J.M.

Published
2023
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5. The Future of Stardust Science

Author

Westphal, A. J., Bridges, J. C., Brownlee, D. E., Butterworth, A. L., De Gregorio, B. T., Dominguez, G., Flynn, G. J., Gainsforth, Z., Ishii, H. A., Joswiak, D., Nittler, L. R., Ogliore, R. C., Palma, R., Pepin, R. O., Stephan, T., and Zolensky, M. E.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Recent observations indicate that >99% of the small bodies in the Solar System reside in its outer reaches --- in the Kuiper Belt and Oort Cloud. Kuiper Belt bodies are probably the best preserved representatives of the icy planetesimals that dominated the bulk of the solid mass in the early Solar System. They likely contain preserved materials inherited from the protosolar cloud, held in cryogenic storage since the formation of the Solar System. Despite their importance, they are relatively underrepresented in our extraterrestrial sample collections by many orders of magnitude ($\sim$10$^{13}$ by mass) as compared with the asteroids, represented by meteorites, which are composed of materials that have generally been strongly altered by thermal and aqueous processes. We have only begun to scratch the surface in understanding Kuiper Belt objects, but it is already clear that the very limited samples of them that we have in our laboratories hold the promise of dramatically expanding our understanding of the formation of the Solar System. Stardust returned the first samples from a known small solar-system body, the Jupiter-family comet 81P/Wild 2, and, in a separate collector, the first solid samples from the local interstellar medium. The first decade of Stardust research resulted in more than 142 peer-reviewed publications, including 15 papers in Science. Analyses of these amazing samples continue to yield unexpected discoveries and to raise new questions about the history of the early Solar System. We identify 9 high-priority scientific objectives for future Stardust analyses that address important unsolved problems in planetary science., Comment: In press at Meteoritics and Planetary Science

Published
2017
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11. Relevance of Common Spatial Patterns Ranked by Kernel PCA in Motor Imagery Classification

Author

Velasquez-Martinez, L. F., Luna-Naranjo, D., Cárdenas-Peña, D., Acosta-Medina, C. D., Castaño, G. A., Castellanos-Dominguez, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Liang, Peipeng, editor, Goel, Vinod, editor, and Shan, Chunlei, editor

Published
2019
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12. Subject-Oriented Dynamic Characterization of Motor Imagery Tasks Using Complexity Analysis

Author

Velasquez-Martinez, L. F., Arteaga, F., Castellanos-Dominguez, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Liang, Peipeng, editor, Goel, Vinod, editor, and Shan, Chunlei, editor

Published
2019
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13. Supervised Relevance Analysis for Multiple Stein Kernels for Spatio-Spectral Component Selection in BCI Discrimination Tasks

Author

López-Montes, Camilo, Cárdenas-Peña, David, Castellanos-Dominguez, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Nyström, Ingela, editor, Hernández Heredia, Yanio, editor, and Milián Núñez, Vladimir, editor

Published
2019
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14. Group Differences in Time-Frequency Relevant Patterns for User-Independent BCI Applications

Author

Velasquez-Martinez, L. F., Zapata-Castaño, F. Y., Padilla-Buritica, J. I., Ferrández Vicente, José Manuel, Castellanos-Dominguez, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2019
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15. Multiple-Instance Lasso Regularization via Embedded Instance Selection for Emotion Recognition

Author

Caicedo-Acosta, J., Cárdenas-Peña, D., Collazos-Huertas, D., Padilla-Buritica, J. I., Castaño-Duque, G., Castellanos-Dominguez, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2019
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16. EEG Channel Relevance Analysis Using Maximum Mean Discrepancy on BCI Systems

Author

Luna-Naranjo, D. F., Hurtado-Rincon, J. V., Cárdenas-Peña, D., Castro, V. H., Torres, H. F., Castellanos-Dominguez, G., Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Vera-Rodriguez, Ruben, editor, Fierrez, Julian, editor, and Morales, Aythami, editor

Published
2019
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17. Gender Effects on an EEG-Based Emotion Level Classification System

Author

De La Pava, I., Álvarez, A., Herrera, P., Castellanos-Dominguez, G., Orozco, A., Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Vera-Rodriguez, Ruben, editor, Fierrez, Julian, editor, and Morales, Aythami, editor

Published
2019
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21. Electronic and plasmonic phenomena at graphene grain boundaries

Author

Fei, Z., Rodin, A. S., Gannett, W., Dai, S., Regan, W., Wagner, M., Liu, M. K., McLeod, A. S., Dominguez, G., Thiemens, M., Neto, A. H. Castro, Keilmann, F., Zettl, A., Hillenbrand, R., Fogler, M. M., and Basov, D. N.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Graphene, a two-dimensional honeycomb lattice of carbon atoms, is of great interest in (opto)electronics and plasmonics and can be obtained by means of diverse fabrication techniques, among which chemical vapor deposition (CVD) is one of the most promising for technological applications. The electronic and mechanical properties of CVD-grown graphene depend in large part on the characteristics of the grain boundaries. However, the physical properties of these grain boundaries remain challenging to characterize directly and conveniently. Here, we show that it is possible to visualize and investigate the grain boundaries in CVD-grown graphene using an infrared nano-imaging technique. We harness surface plasmons that are reflected and scattered by the graphene grain boundaries, thus causing plasmon interference. By recording and analyzing the interference patterns, we can map grain boundaries for a large area CVD-grown graphene film and probe the electronic properties of individual grain boundaries. Quantitative analysis reveals that grain boundaries form electronic barriers that obstruct both electrical transport and plasmon propagation. The effective width of these barriers (~10-20 nm) depends on the electronic screening and it is on the order of the Fermi wavelength of graphene. These results uncover a microscopic mechanism that is responsible for the low electron mobility observed in CVD-grown graphene, and suggest the possibility of using electronic barriers to realize tunable plasmon reflectors and phase retarders in future graphene-based plasmonic circuits., Comment: 25 pages, 9 figures

Published
2013
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24. Influence of Time-Series Extraction on Binge Drinking Interpretability Using Functional Connectivity Analysis

Author

Padilla-Buriticá, J. I., Torres, H. F., Pereda, E., Correa, A., Castellanos-Domínguez, G., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Wang, Shouyi, editor, Yamamoto, Vicky, editor, Su, Jianzhong, editor, Yang, Yang, editor, Jones, Erick, editor, Iasemidis, Leon, editor, and Mitchell, Tom, editor

Published
2018
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25. Assessment of Source Connectivity for Emotional States Discrimination

Author

Martinez-Vargas, J. D., Nieto-Mora, D. A., Muñoz-Gutiérrez, P. A., Cespedes-Villar, Y. R., Giraldo, E., Castellanos-Dominguez, G., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Wang, Shouyi, editor, Yamamoto, Vicky, editor, Su, Jianzhong, editor, Yang, Yang, editor, Jones, Erick, editor, Iasemidis, Leon, editor, and Mitchell, Tom, editor

Published
2018
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26. Generalized Low-Computational Cost Laplacian Eigenmaps

Author

Salazar-Castro, J. A., Peña, D. F., Basante, C., Ortega, C., Cruz-Cruz, L., Revelo-Fuelagán, J., Blanco-Valencia, X. P., Castellanos-Domínguez, G., Peluffo-Ordóñez, D. H., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Yin, Hujun, editor, Camacho, David, editor, Novais, Paulo, editor, and Tallón-Ballesteros, Antonio J., editor

Published
2018
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30. Gate-tuning of graphene plasmons revealed by infrared nano-imaging

Author

Fei, Z., Rodin, A. S., Andreev, G. O., Bao, W., McLeod, A. S., Wagner, M., Zhang, L. M., Zhao, Z., Dominguez, G., Thiemens, M., Fogler, M. M., Castro-Neto, A. H., Lau, C. N., Keilmann, F., and Basov, D. N.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Surface plasmons are collective oscillations of electrons in metals or semiconductors enabling confinement and control of electromagnetic energy at subwavelength scales. Rapid progress in plasmonics has largely relied on advances in device nano-fabrication, whereas less attention has been paid to the tunable properties of plasmonic media. One such medium-graphene-is amenable to convenient tuning of its electronic and optical properties with gate voltage. Through infrared nano-imaging we explicitly show that common graphene/SiO2/Si back-gated structures support propagating surface plasmons. The wavelength of graphene plasmons is of the order of 200 nm at technologically relevant infrared frequencies, and they can propagate several times this distance. We have succeeded in altering both the amplitude and wavelength of these plasmons by gate voltage. We investigated losses in graphene using plasmon interferometry: by exploring real space profiles of plasmon standing waves formed between the tip of our nano-probe and edges of the samples. Plasmon dissipation quantified through this analysis is linked to the exotic electrodynamics of graphene. Standard plasmonic figures of merits of our tunable graphene devices surpass that of common metal-based structures., Comment: 15 pages, 3 figures

Published
2012
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31. Model for quantitative tip-enhanced spectroscopy and the extraction of nanoscale-resolved optical constants

Author

McLeod, AS, Kelly, P, Goldflam, MD, Gainsforth, Z, Westphal, AJ, Dominguez, G, Thiemens, MH, Fogler, MM, and Basov, DN

Subjects
cond-mat.mtrl-sci, physics.optics, Fluids & Plasmas, Physical Sciences, Chemical Sciences
Abstract

Near-field infrared spectroscopy by elastic scattering of light from a probe tip resolves optical contrasts in materials at dramatically subwavelength scales across a broad energy range, with the demonstrated capacity for chemical identification at the nanoscale. However, current models of probe-sample near-field interactions still cannot provide a sufficiently quantitatively interpretation of measured near-field contrasts, especially in the case of materials supporting strong surface phonons. We present a model of near-field spectroscopy derived from basic principles and verified by finite-element simulations, demonstrating superb predictive agreement both with tunable quantum cascade laser near-field spectroscopy of SiO2 thin films and with newly presented nanoscale Fourier transform infrared (nanoFTIR) spectroscopy of crystalline SiC. We discuss the role of probe geometry, field retardation, and surface mode dispersion in shaping the measured near-field response. This treatment enables a route to quantitatively determine nanoresolved optical constants, as we demonstrate by inverting newly presented nanoFTIR spectra of an SiO2 thin film into the frequency dependent dielectric function of its mid-infrared optical phonon. Our formalism further enables tip-enhanced spectroscopy as a potent diagnostic tool for quantitative nanoscale spectroscopy. © 2014 American Physical Society.

Published
2014

32. Tunable Phonon Polaritons in Atomically Thin van der Waals Crystals of Boron Nitride

Author

Dai, S, Fei, Z, Ma, Q, Rodin, AS, Wagner, M, McLeod, AS, Liu, MK, Gannett, W, Regan, W, Watanabe, K, Taniguchi, T, Thiemens, M, Dominguez, G, Neto, AH Castro, Zettl, A, Keilmann, F, Jarillo-Herrero, P, Fogler, MM, and Basov, DN

Subjects
General Science & Technology
Abstract

van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dimensional solids are emerging as a new paradigm in the physics of materials. We used infrared nanoimaging to study the properties of surface phonon polaritons in a representative van der Waals crystal, hexagonal boron nitride. We launched, detected, and imaged the polaritonic waves in real space and altered their wavelength by varying the number of crystal layers in our specimens. The measured dispersion of polaritonic waves was shown to be governed by the crystal thickness according to a scaling law that persists down to a few atomic layers. Our results are likely to hold true in other polar van der Waals crystals and may lead to new functionalities.

Published
2014

34. Relevant Kinematic Feature Selection to Support Human Action Recognition in MoCap Data

Author

Pulgarin-Giraldo, J. D., Ruales-Torres, A. A., Alvarez-Meza, A. M., Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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35. Spatial Resolution of EEG Source Reconstruction in Assessing Brain Connectivity Analysis

Author

Padilla-Buriticá, Jorge Ivan, Martínez-Vargas, J. D., Suárez-Ruiz, A., Ferrandez, J. M., Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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36. EEG Source Imaging Based on Dynamic Sparse Coding as ADHD Biomarker

Author

Grisales-Franco, F. M., Medina-Salcedo, J. M., Ovalle-Martínez, D. M., Martínez-Vargas, J. D., García-Murillo, D. G., Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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37. Influence of Anisotropic Blood Vessels Modeling on EEG Source Localization

Author

Cuartas-Morales, E., Torrado-Carvajal, Angel, Hernandez-Tamames, Juan Antonio, Malpica, Norberto, Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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38. MRI-Based Feature Extraction Using Supervised General Stochastic Networks in Dementia Diagnosis

Author

Collazos-Huertas, D., Tobar-Rodriguez, A., Cárdenas-Peña, D., Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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39. Detection of EEG Dynamic Changes Due to Stimulus-Related Activity in Motor Imagery Recordings

Author

Velasquez-Martinez, L. F., Alvarez-Meza, A., Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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40. Non-linear Covariance Estimation for Reconstructing Neural Activity with MEG/EEG Data

Author

Duque-Muñoz, L., Martinez-Vargas, J. D., Castellanos-Dominguez, G., Vargas-Bonilla, J. F., López, J. D., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Ferrández Vicente, José Manuel, editor, Álvarez-Sánchez, José Ramón, editor, de la Paz López, Félix, editor, Toledo Moreo, Javier, editor, and Adeli, Hojjat, editor

Published
2017
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41. A Similarity Indicator for Differentiating Kinematic Performance Between Qualified Tennis Players

Author

Pulgarin-Giraldo, J. D., Alvarez-Meza, A. M., Melo-Betancourt, L. G., Ramos-Bermudez, S., Castellanos-Dominguez, G., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Beltrán-Castañón, César, editor, Nyström, Ingela, editor, and Famili, Fazel, editor

Published
2017
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43. Electronic and plasmonic phenomena at graphene grain boundaries

Author

Fei, Z, Rodin, AS, Gannett, W, Dai, S, Regan, W, Wagner, M, Liu, MK, McLeod, AS, Dominguez, G, Thiemens, M, Castro Neto, Antonio H, Keilmann, F, Zettl, A, Hillenbrand, R, Fogler, MM, and Basov, DN

Subjects
Physical Sciences, Engineering, Nanotechnology, Condensed Matter Physics, cond-mat.mes-hall, Nanoscience & Nanotechnology
Abstract

Graphene, a two-dimensional honeycomb lattice of carbon atoms of great interest in (opto)electronics and plasmonics, can be obtained by means of diverse fabrication techniques, among which chemical vapour deposition (CVD) is one of the most promising for technological applications. The electronic and mechanical properties of CVD-grown graphene depend in large part on the characteristics of the grain boundaries. However, the physical properties of these grain boundaries remain challenging to characterize directly and conveniently. Here we show that it is possible to visualize and investigate the grain boundaries in CVD-grown graphene using an infrared nano-imaging technique. We harness surface plasmons that are reflected and scattered by the graphene grain boundaries, thus causing plasmon interference. By recording and analysing the interference patterns, we can map grain boundaries for a large-area CVD graphene film and probe the electronic properties of individual grain boundaries. Quantitative analysis reveals that grain boundaries form electronic barriers that obstruct both electrical transport and plasmon propagation. The effective width of these barriers (∼10-20 nm) depends on the electronic screening and is on the order of the Fermi wavelength of graphene. These results uncover a microscopic mechanism that is responsible for the low electron mobility observed in CVD-grown graphene, and suggest the possibility of using electronic barriers to realize tunable plasmon reflectors and phase retarders in future graphene-based plasmonic circuits.

Published
2013

44. Natural orifice surgery: Initial clinical experience

Author

Horgan, S, Cullen, JP, Talamini, MA, Mintz, Y, Ferreres, A, Jacobsen, GR, Sandler, B, Bosia, J, Savides, T, Easter, DW, Savu, MK, Ramamoorthy, SL, Whitcomb, E, Agarwal, S, Lukacz, E, Dominguez, G, and Ferraina, P

Abstract

Background: Natural orifice translumenal endoscopic surgery (NOTES) has moved quickly from preclinical investigation to clinical implementation. However, several major technical problems limit clinical NOTES including safe access, retraction and dissection of the gallbladder, and clipping of key structures. This study aimed to identify challenges and develop solutions for NOTES during the initial clinical experience. Methods: Under an Institutional Review Board (IRB)-approved protocol, patients consented to a natural orifice operation for removal of either the gallbladder or the appendix via either the vagina or the stomach using a single umbilical trocar for safety and assistance. Results: Nine transvaginal cholecystectomies, one transgastric appendectomy, and one transvaginal appendectomy have been completed to date. All but one patient were discharged on postoperative day 1 as per protocol. No complications occurred. Conclusion: The limited initial evidence from this study demonstrates that NOTES is feasible and safe. The addition of an umbilical trocar is a bridge allowing safe performance of NOTES procedures until better instruments become available. The addition of a flexible long grasper through the vagina and a flexible operating platform through the stomach has enabled the performance of NOTES in a safe and easily reproducible manner. The use of a uterine manipulator has facilitated visualization of the cul de sac in women with a uterus to allow for safe transvaginal access. © The Author(s) 2009.

Published
2009

46. Trajectories of Water and Sand Jets

Author

Serrano, D. A., Sánchez-Silva, F., Klapp, J., Tamayo, P., Medina, A., Domínguez, G., Förstner, Ulrich, Series Editor, Rulkens, Wim H., Series Editor, Salomons, Wim, Series Editor, Klapp, Jaime, editor, Sigalotti, Leonardo Di G., editor, Medina, Abraham, editor, López, Abel, editor, and Ruiz-Chavarría, Gerardo, editor

Published
2016
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