The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Yutaka Kadoya - One of the best experts on this subject based on the ideXlab platform.
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Radiation pattern of plasmonic nano-antennas in a Homogeneous Medium.
Optics express, 2014Co-Authors: Takafumi Sugita, Kaori Yanazawa, Satoshi Maeda, Holger F. Hofmann, Yutaka KadoyaAbstract:Radiation patterns from plasmonic nano-antennas formed on a glass substrate were investigated using index-matching oils. It was confirmed that the pattern from single nano-antennas for various cases of index-mismatching between the substrate and the oil is explained well by the patterns of infinitesimal electric dipoles. We found that for an angular resolution of 2°, the index mismatch must be smaller than 0.001 to realize isotropic radiation. By using the appropriate condition, the radiation patterns of nano Yagi-Uda antennas in a quasi-Homogeneous Medium were obtained experimentally.
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Radiation pattern of plasmonic Yagi-Uda antennas in a Homogeneous Medium realized by liquid-immersion method
CLEO: 2013, 2013Co-Authors: Takafumi Sugita, Satoshi Maeda, Holger F. Hofmann, Yutaka KadoyaAbstract:The radiation pattern of plasmon-based optical Yagi-Uda antenna was measured in a quasi-Homogeneous Medium realized by immersing the antenna in a liquid. The directional gain of the 5-element antenna was found to be about 3.7, consistently with the theoretical prediction.
J. Vrbik - One of the best experts on this subject based on the ideXlab platform.
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Mixed Boundary Value Problem in a Non-Homogeneous Medium Under Steady Distribution of Temperature
Meccanica, 2004Co-Authors: J. Rokne, B M Singh, R S Dhaliwal, J. VrbikAbstract:This paper is concerned with a mixed boundary value problem of a non-Homogeneous Medium under steady distribution of temperature whose elastic constants are exponential functions of y . By using Fourier cosine transforms the mixed boundary value problem of heat conduction is reduced to a Fredholm integral equation of the second kind. Then the elastic problem of the non-Homogeneous semi-infinite half-plane under distribution of load over a plane face is solved. The influence of the non-homogeneity of the material on the thermal stress distribution is illustrated graphically.
Samita Basu - One of the best experts on this subject based on the ideXlab platform.
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Magnetic Field Effect on Photoinduced Electron Transfer Reaction Associated with Hydrogen Bond Formation in Homogeneous Medium
Applied Magnetic Resonance, 2012Co-Authors: Brotati Chakraborty, Samita BasuAbstract:The effect of low magnetic field (MF) of the order of 0.01–0.08 T on the reactions involving spin-correlated radical ion pairs generated through electron transfer as intermediates is an interplay between diffusion dynamics and spin dynamics of the individual radical ions in the solvent cage. In this paper, we have made an attempt to study photoinduced electron transfer reactions between three aromatic amines and acridone in ethanol Medium using a weak external MF. Although the MF effect is conventionally observed appreciably in heterogeneous organized Medium, in the present case a considerable MF effect is obtained in Homogeneous Medium, i.e., ethanol. The occurrence of this rare phenomenon has been attributed to the presence of water molecules as impurities in ethanol.
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Magnetic field effect on electron transfer reactions of acridine yellow with amines of varied structures in Homogeneous Medium
Chemical Physics Letters, 2010Co-Authors: Brotati Chakraborty, Samita BasuAbstract:Abstract Interaction of acridine yellow (AY) with three amines, viz., dimethylaniline (DMA), 4,4′-bis(dimethylamino)diphenylmethane (DMDPM) and triethylamine (TEA) in Homogeneous Medium is explored. DMA and DMDPM participate only in photoinduced electron transfer (PET) with AY whereas TEA is found to be involved in both PET and charge-transfer complex formation. The novelty of the present work lies in the fact that all the three AY-amine systems exhibit magnetic field effect on PET reactions in Homogeneous Medium due to inter-radical hydrogen bond mediated by intervening water molecules, which sustain the geminate characteristics as well as the spin correlation of radical ion pairs, that are formed as primary intermediates through PET.
Liping Chang - One of the best experts on this subject based on the ideXlab platform.
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Reciprocal Relations for Third-Order Correlation Between Intensity Fluctuations of Light Scattered From a Quasi-Homogeneous Medium
IEEE Photonics Journal, 2017Co-Authors: Liping Chang, Jia LiAbstract:Within the validity of the first-order Born approximation, we introduce the third-order correlation between intensity fluctuation (CIF) of light scattered from a quasi-Homogeneous Medium. The third-order CIF is defined as the degree of intensity correlations specified at three position vectors in scattered field. Expressions are derived for the normalized CIF and variance in intensity fluctuations (VIF) of the scattered field. Two reciprocal relations are generalized for the third-order CIF of the scattered field: 1) The normalized CIF is proportional to the real portion of the Fourier transform products of the strength of the scattering potential; 2) the third-order VIF of the scattered field is proportional to the cube of the Fourier transform of the normalized correlation coefficient of the scattering potential.
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Correlation between intensity fluctuations induced by scattering of a partially coherent, electromagnetic wave from a quasi-Homogeneous Medium
Journal of Quantitative Spectroscopy and Radiative Transfer, 2016Co-Authors: Liping Chang, Feinan ChenAbstract:Abstract Based on the first-order Born approximation, the correlation between intensity fluctuations is derived for a partially coherent, electromagnetic plane wave scattering from a spatially quasi-Homogeneous Medium. Young׳s pinholes are utilized to control the degree of coherence of the incident field. For the electromagnetic scattering case, it is shown that the CIF of the scattered field strongly depends on the degree of polarization of the incident wave, Young׳s pinhole parameter, effective radius and correlation length of the Medium. The influences of these parameters on the CIF distributions are revealed by numerical calculations.
Takafumi Sugita - One of the best experts on this subject based on the ideXlab platform.
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Radiation pattern of plasmonic nano-antennas in a Homogeneous Medium.
Optics express, 2014Co-Authors: Takafumi Sugita, Kaori Yanazawa, Satoshi Maeda, Holger F. Hofmann, Yutaka KadoyaAbstract:Radiation patterns from plasmonic nano-antennas formed on a glass substrate were investigated using index-matching oils. It was confirmed that the pattern from single nano-antennas for various cases of index-mismatching between the substrate and the oil is explained well by the patterns of infinitesimal electric dipoles. We found that for an angular resolution of 2°, the index mismatch must be smaller than 0.001 to realize isotropic radiation. By using the appropriate condition, the radiation patterns of nano Yagi-Uda antennas in a quasi-Homogeneous Medium were obtained experimentally.
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Radiation pattern of plasmonic Yagi-Uda antennas in a Homogeneous Medium realized by liquid-immersion method
CLEO: 2013, 2013Co-Authors: Takafumi Sugita, Satoshi Maeda, Holger F. Hofmann, Yutaka KadoyaAbstract:The radiation pattern of plasmon-based optical Yagi-Uda antenna was measured in a quasi-Homogeneous Medium realized by immersing the antenna in a liquid. The directional gain of the 5-element antenna was found to be about 3.7, consistently with the theoretical prediction.