Phase Reversal Diffraction in incoherent light (2009)
Zhang, Su-Heng, Gan, Shu, Cao, De-Zhong, Xiong, Jun, Zhang, Xiangdong, Wang, Kaige
Phase reversal occurs in the propagation of an electromagnetic wave in a negatively refracting medium or a phase-conjugate interface. Here we report the experimental observation of phase reversal...
On Newman-Penrose constants of stationary electrovacuum spacetimes (2009)
Zhang, Xiangdong, Wu, Xiaoning, Gao, Sijie
A theorem related to the Newman-Penrose constants is proven. The theorem states that all the Newman-Penrose constants of asymptotically flat, stationary, asymptotically algebraically special...
Chunhua Ge, Xiangqian Li, Xiangdong Zhang, Yang Zhao, Rui Zhang
The asymmetric unit of the title compound, C14H8N2O8·2C3H7NO or L·2DMF (DMF = N,N-dimethylformamide), contains one half of the centrosymmetric molecule L and one solvent molecule, which is...
4,4′-Bipyridine–2,3,4,5,6-pentafluorobenzoic acid (1/2) (2009)
Xiangdong Zhang, Lijuan Wang, Chunhua Ge, Yanmei Men, Rui Zhang
In the title 1:2 adduct, C10H8N2·2C7HF5O2, the complete 4,4′-bipyridine molecule is generated by a crystallographic twofold axis. The components of the adduct are linked by intermolecular...
1,10-Phenanthrolinium 2,3,4,5,6-pentafluorobenzoate–2,3,4,5,6-pentafluorobenzoic acid (1/2) (2009)
Xiangdong Zhang, Yanmei Men, Xianghua Yan, Chunhua Ge, Yuxia Kong
In the title compound, C12H9N2+·C7F5O2−·2C7HF5O2, the cation and anion are linked by an N—H...O hydrogen bond. The neutral molecules bond to the anion via O—H...O hydrogen...
Extremal transmission and beating effect of acoustic wave in two-dimensional sonic crystal (2008)
Zhang, Xiangdong, Liu, Zhengyou
The extremal transmission of acoustic wave near the Dirac point in two-dimensional (2D) sonic crystal (SC), being inversely proportional to the thickness of sample, has been demonstrated...
Poly[[diaqua-μ4-tartrato-μ2-tartrato-dimanganese(II)] dihydrate] (2008)
Chunhua Ge, Zhen Zhao, Guangxi Han, Xiangdong Zhang
In the title compound, {[Mn(C4H4O6)(H2O)]·H2O}n, the Mn2+ ion is connected to three different tartrate anions and a water molecule, resulting in a distorted MnO6 octahedral geometry. There are...
Xiangdong Zhang, Chunhua Ge, Lei Guan, Zhimin Sun
In the title compound, [Cd(C6H4O8S2)(C12H8N2)2(H2O)]·H2O, each CdII ion is coordinated by four N atoms [Cd—N = 2.310 (7)–2.341 (7) Å] from two...
Bis[1-hydroxyethylidenediphosphonato(1−)](1,10-phenanthroline)nickel(II) monohydrate (2008)
Xiangdong Zhang, Chunhua Ge, Xiaoyan Zhang, Qitao Liu
In the mononuclear title compound, [Ni(C2H6O7P2)2(C12H8N2)]·H2O, the NiII atom (site symmetry 2) is bonded to two phosphate-based O,O′-bidentate chelate ligands and one...
3,3′-(Ethane-1,2-diyl)bis(2-thioxo-1,3-oxazolidin-4-one) (2008)
Chunhua Ge, Ya'nan Guo, Xiangdong Zhang, Xiaoyan Zhang, Qitao Liu
The asymmetric unit of the title compound, C8H8N2O4S2, contains one half of a centrosymmetric molecule. A short C...O distance of 3.012 (4) Å between the carbonyl groups of...
It is shown, for the first time, that the zitterbewegung of photon can appear near the Dirac point in two-dimensional photonic crystal. The superiority of such a phenomenon for photons is that it can...
Demonstration of a New Transport Regime of Photon in Two-dimensional Photonic Crystal (2007)
A new transport regime of photon in two-dimensional photonic crystal near the Dirac point has been demonstrated by exact numerical simulation. In this regime, the conductance of photon is inversely...
Absolute negative refraction regions for both polarizations of electromagnetic wave in two-dimensional photonic crystal have been found through both the analysis and the exact numerical simulation....
Engineering acoustic band gaps in phononic crystals (2001)
Zhang, Zhao Qing, Lai, Yun, Zhang, Xiangdong
In recent years, the study of acoustic and elastic waves propagation in periodic materials, known as "phononic crystals", has received increasing amount of attention. Analogous to photonic crystals,...
A New Scheme for an Automatic Generation of Multi-Variable Fuzzy Systems (2001)
Liang Chen, Naoyuki Tokuda, Xiangdong Zhang, Yongbao He
We present a new novel method of automatically generating a multi-variable fuzzy inference system from given sample sets. We first decompose the sample set, say , into a cluster of sample sets...
Studies on the mode of action of the antibiotic bicyclomycin /--by Xiangdong Zhang. (1997)
Degree granted by Dept. of Chemistry.
Development of transducers and technique for guided waves in plastics /--by Xiangdong Zhang. (1989)
Thesis (M.S.)--University of Nebraska--Lincoln, 1989.