The formation of single-crystal diamond membranes is an important prerequisite for the fabrication of high-quality optical cavities in this material. Diamond membranes fabricated using lift-off processes involving the ...
Ahn, Jung; Wang, Guoxiu; Kim, Yong(Elsevier Inc, 2009)
In this paper, we present a facile method to synthesize SnO2 nanofibres. Unlike the conventional CVD process for synthesizing nanofibres, the present synthesis method needs neither specific source gas nor substrates. Sn?Ag ...
Wang, Xianlong; Zeng, Zhi; Ahn, Hyojun; Wang, Guoxiu(American Institute of Physics, 2009)
The adsorption of Li ions on boron doped graphene was investigated using a first-principles method. Our results show that, as boron doping turns graphene into an electron-deficient system, more Li ions can be captured ...
Effective, permanent tuning of the whispering gallery modes (WGMs) of p-i-n doped GaN microdisk cavity with embedded InGaN quantum dots over one free spectral range is demonstrated by irradiating the microdisks with a ...
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 ...