In lossless periodic media, the concept of group velocity is fundamental to the study of propagation dynamics. When spatially averaged, the group velocity is numerically equivalent to energy velocity, defined as the ratio ...
We report on very high coupling efficiencies into rod-type photonic crystal (PC) slabs with unmodified interfaces. Three-dimensional finite difference time domain simulations show that reflected powers of less than 1.5% ...
We give a rigorous semianalytical definition of impedance for square and triangular (hexagonal) lattice two-dimensional photonic crystals (PCs). Our impedance is a small matrix, derived from transfer matrices, which stores ...
Li, A. H.; Liu, H.; Lonescu, M.; Wang, X.; Dou, S. X.; Collings, E. W.; Sumption, M. D.; Bhatia, M.; Lin, Z.; Zhu, J.(American Institute of Physics, 2005)
YBa2Cu3O7 films were fabricated by pulsed laser deposition on SrTiO3 s100d single-crystal
substrates whose surfaces were modified by the introduction of Ag nanodots. The critical current
density sJcd was found to increase ...
In sub-stoichiometric MoO3, electrical and optical responses across the solar spectrum are tunable and manifest a sharp phase transition in thin films at a specific oxygen content. Models of optical response in insulating ...
Material grown by room temperature electron beam induced deposition (EBID) using (CH(3))(3)CH(3)C(5)H(4)Pt precursor consists of platinum nanocrystals embedded in an amorphous matrix. The crystallites are shown to intermix ...
We study the radiation dynamics of an electric dipole source placed near or inside a discrete invisibility cloak. We show that the main features of radiation dynamics can be understood in terms of the interaction of the ...
In this work, the flow of the Josephson vortices (JVs) has been studied for the highly anisotropic Bi2Sr2Ca2Cu3Oy (Bi2223) single crystals. A giant flow of JVs or giant positive magnetoresistance (MR) of over 500%-2000% ...
We report on the magnetoresistance (MR) and magnetic properties of In1.90-xMn0.1SnxO3 (0 <= x <= 0.06) oxide. All samples were found to be ferromagnetic below T-C=46 K. Sn doping changed In1.90Mn0.1O3 from an insulator to ...
The lattice parameters of a metallic nanoparticle decrease with its size. To describe this phenomenon, a model based on elasticity is developed in this paper. Using this model, we investigate the lattice contraction of a ...
We have constructed the Green's tensor for two-dimensional gyrotropic photonic clusters and have calculated their optical local density of states (LDOS). For clusters that support the chiral Hall edge states we calculate ...
We report the direct, room-temperature, near-field mapping and spectroscopy of the optical modes of a photonic-crystal microcavity containing quantum wells. We use a near-field optical probe to reveal the imprint of the ...
We derive semianalytic models of two types of photonic crystal resonators by simplifying the Bloch mode scattering matrix method. Essential to the models are two parameters, which are interpreted to be the phase change ...
We present an exact theory for modeling defect modes in two-dimensional photonic crystals having an infinite cladding. The method is based on three key concepts, namely, the use of fictitious sources to modify response ...
Gou, Xinglong; Wang, Guoxiu; Park, Jinsoo; Liu, Hao; Yang, Juan(Institute of Physics (UK), 2008)
Monodisperse a-Fe2O3 porous nanospheres with uniform shape and size have been synthesized via a facile template-free route. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy ...
We consider formulations for the Helmholtz operator for conically propagating modes on an array of high contrast ferromagnetic cylindrical inclusions in the limit when their wavelength outside the inclusions tends to ...
Marquarding, M.; Kilborn, V. A.; Mader, S.; O'Brien, J.; Doyle, M. T.; Ryder, S. D.; Minchin, R. F.; Garcia-Appadoo, D.; Drinkwater, M. J.; Ekers, R. D.; Gibson, B. K.; Freeman, K. C.; Jerjen, H.; Zwaan, M. A.; Stootman, F.; Sadler, E. M.; Ryan-Weber, E.; Stevens, J.; Meyer, M. J.; Gurovich, S.; Staveley-Smith, L.; Webster, R. L.; Putman, M. E.; Knezek, P. M.; Koribalski, B. S.; Barnes, D. G.; Disney, M. J.; de Blok, W. J.; Kesteven, M. J.; Bhathal, R.; Stewart, I. M.; Wong, O.; Harnett, J. I.; Henning, P. A.; Waugh, M.(Blackwell Publishing, 2006)
The Northern HIPASScatalogue (NHICAT) is the northern extension of the HIPASS catalogue,
HICAT. This extension adds the sky area between the declination (Dec.) range of +20 < 8
< +25"30' to HICAT's Dec. range of -900 < ...
Chahine Khaled; Ballico Mark; Reizes John; Madadnia Jafar(Springer Netherlands, 2008)
Design modifications are presented for a 289-mm long, 25.4-mm inner diameter blackbody heater element of a 48 kW Thermogage blackbody furnace, based on (i) cutting a small â¿¿heater zoneâ¿¿ into the ends of the tube and ...
Duan, Runyao; Feng, Yuan; Ying, Mingsheng(The American Physical Society, 2009)
We provide a feasible necessary and sufficient condition for when an unknown quantum operation (quantum device) secretly selected from a set of known quantum operations can be identified perfectly within a finite number ...