W. Zhang

Publication List Details

Period

1991 - 2008

Number

324

Co-Authors

High performance Joint European Torus (JET) plasmas for deuterium-tritium operation with the MkII divertor (2008)

Jones, T. T. C., Adams, J. M., Ageladarakis, P., AliArshad, S., Alper, B., Altmann, H., ...

Planned experiments in the Joint European Torus [Plasma Physics and Controlled Fusion Research, Proceedings, 13th International Conference, Washington, D.C., 1990 (International Atomic Energy Agency,...

Latest JET results in deuterium and deuterium-tritium plasmas (2008)

Adams, J. M., Ageladarakis, P., Arshad, S. A., Alper, B., Altmann, H., Andrew, P., ...

All major JET systems have been fully commissioned for D-T and the DTE1 series of experiments has started with the D-T fuel mixture and operating conditions foreseen for ITER. In the area of ITER...

W-algebra W(2,2) and the vertex operator algebra L(1/2,0)\otimes L(1/2,0) (2007)

Zhang, W., Dong, C.

In this paper the W-algebra W(2,2) and its representation theory are studied. It is proved that a simple vertex operator algebra generated by two weight 2 vectors is either a vertex operator algebra...

Toward classfication of rational vertex operator algebras with central charges less than 1 (2007)

Dong, C., Zhang, W.

The rational and C_2-cofinite simple vertex operator algebras whose effective central charges and the central charges c are equal and less than 1 are classified. Such a vertex operator algebra is...

Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields (2007)

Zhang, W., Zudov, M. A., Pfeiffer, L. N., West, K. W.

Using dc excitation to spatially tilt Landau levels, we study resonant acoustic phonon scattering in two-dimensional electron systems. We observe that dc electric field strongly modifies phonon...

Coherent grazing exit x-ray scattering geometry for probing the structure of thin films (2007)

Pfeiffer, F., Zhang, W., Robinson, I. K.

We demonstrate a diffraction geometry which provides strong sensitivity to the microstructure of thin films. While a coherent beam of X-rays is being reflected from the surface of the sample,...

Entanglement, fidelity and topological entropy in a quantum phase transition to topological order (2007)

Hamma, A., Zhang, W., Haas, S., Lidar, D. A.

We present a numerical study of a quantum phase transition from a spin-polarized to a topologically ordered phase in a system of spin-1/2 particles on a torus. We demonstrate that this...

Simulation of Interfacial Phonon Transport in Si-Ge Heterostructures Using an Atomistic Green's Function Method (2007)

Zhang, W, Fisher, Timothy, Mingo, N.

An atomistic Green's function method is developed to simulate phonon transport across a strained germanium (or silicon) thin film between two semi-infinite silicon (or germanium) contacts. A...

The Atomistic Green's Function Method: An Efficient Simulation Approach for Nanoscale Phonon Transport (2007)

Zhang, W., Fisher, Timothy, Mingo, N.

This article presents a general formulation of an atomistic Green's function (AGF) method. The atomistic Green's function approach combines atomic-scale fidelity with asymptotic treatment of...

Magnetoresistance Oscillations in Two-dimensional Electron Systems Induced by AC and DC Fields (2007)

Zhang, W., Zudov, M. A., Pfeiffer, L. N., West, K. W.

We report on magnetotransport measurements in a high-mobility two-dimentional electron system subject simultaneously to AC (microwave) and DC (Hall) fields. We find that DC excitation affects...

Gallium(III) halide complexes with phosphines, arsines and phosphine oxides - a comparative study (2007)

Cheng, F., Codgbrook, H.L., Hector, A.L., Levason, W., Reid, G., Webster, M., ...

The phosphine oxide complexes [GaX3(Me3PO)] and [(GaX3)2{μ-o-C6H4(CH2P(O)Ph2)2}] have been prepared and characterised by microanalysis, IR and multinuclear NMR (1H, 13C{1H}, 31P{1H} and 71Ga)...

Synthesis, spectroscopic and structural systematics of complexes of Germanium(IV) Halides (GeX4, X = F, Cl, Br or I) with mono-, bi- and tri-dentate and macrocyclic nitrogen donor ligands (2007)

Cheng, F., Davis, M.F., Hector, A.L., Levason, W., Reid, G., Webster, M., ...

The six-coordinate adducts cis-[GeX4(L-L)] (L-L = 2,2-bipyridyl, 1,10-phenanthroline, or Me2NCH2CH2NMe2, X = F, Cl or Br) have been synthesised and characterised by IR and VT 1H and 19F{1H} NMR...

mu-1,2-Bis(diphenylphosphino)ethane-kappa P-2 : P-bis[trichloridogallium(III)] (2007)

Cheng, F., Hector, A.L., Levason, W., Reid, G., Webster, M., Zhang, W.

The centrosymmetric molecule of the title compound, [(GaCl3)2(C26H24P2)] or [(GaCl3)2{[mu]-Ph2P(CH2)2PPh2}], consists of two pseudo-tetrahedral Ga centres coordinated by three Cl atoms [Ga-Cl =...

Timing and duration of supergene mineralization at the Xinrong manganese deposit, western Guangdong Province, South China: cryptomelane Ar-40/Ar-39 dating (2007)

Li, J. W., Vasconcelos, P. M. D., Zhang, W., Deng, X. D., Duzgoren-Aydin, N., Yan, D. R., ...

Supergene Mn-oxide deposits are widely distributed in Guangxi, Guangdong, Yunnan, and Hunan Provinces, South China, accounting for 18% of the total Mn reserves in the country. Direct dating of...

Neogene weathering and supergene manganese enrichment in subtropical South China: An Ar-40/Ar-39 approach and paleoclimatic significance (2007)

Li, J. W., Vasconcelos, P. M. D., Duzgoren-Aydin, N., Yan, D. R., Zhang, W., Deng, X. D., ...

Deep weathering profiles and associated supergene Mn-oxides deposits are widely distributed in South China. However, data on their ages are not available until most recently. Ar-40/Ar-39 laser...

Magnetic properties of sediments from the Chaohu lake for the last 7000 years and their implications for the evolution of Asian Monsoon (2007)

Zhang, W., Dai, X., Zhang, F., Shi, Y., Yu, L., Dearing, J.A.

The monsoon climate changes during the Holocene, a period characterized by civilization development, has a significant impact on the living environment of the human society, especially the alteration...

Magnetotransport in a two-dimensional electron system in dc electric fields (2006)

Zhang, W., Zudov, M. A., Pfeiffer, L. N., West, K. W.

We report on nonequilibrium transport measurements in a high-mobility two-dimensional electron system subject to weak magnetic field and dc excitation. Detailed study of dc-induced...

Giant optical activity in dielectric planar metamaterials with 2D chirality (2006)

Potts, A, Zhang, W, Bagnall, D. M

For the first time, all-dielectric planar chiral metamaterials consisting of arrays of silicon nitride gammadions on fused silica substrates have been fabricated, and shown to be capable of inducing...

Giant optical activity in dielectric planar metamaterials with 2D chirality (2006)

Potts, A, Zhang, W, Bagnall, D. M

For the first time, all-dielectric planar chiral metamaterials consisting of arrays of silicon nitride gammadions on fused silica substrates have been fabricated, and shown to be capable of inducing...

Giant optical activity in dielectric planar metamaterials with 2D chirality (2006)

Potts, A, Zhang, W, Bagnall, D. M

For the first time, all-dielectric planar chiral metamaterials consisting of arrays of silicon nitride gammadions on fused silica substrates have been fabricated, and shown to be capable of inducing...

Giant optical activity in dielectric planar metamaterials with 2D chirality (2006)

Potts, A, Zhang, W, Bagnall, D. M

For the first time, all-dielectric planar chiral metamaterials consisting of arrays of silicon nitride gammadions on fused silica substrates have been fabricated, and shown to be capable of inducing...

Mechanisms of weak thickness dependence of the critical current density in strong pinning ex situ metal-organic-deposition route YBa2Cu3O7-x coated conductors (2006)

Kim, S. I., Gurevich, A., Song, X., Li, X., Zhang, W., Kodenkandath, T., ...

We report on the thickness dependence of the superconducting characteristics including critical current Ic, critical current density Jc, transition temperature Tc, irreversibility field Hirr, bulk...

A Simple Means to Immobilize Enzyme into Conducting Polymers via Entrapment (2006)

Chen, J., Winther-Jensen, B., Lynam, C., Ngamna, O, Moulton, S., Zhang, W., ...

Poly3,4-ethylenedioxy thiophene PEDT, obtained by chemical vapor phase polymerization can shrink to 5% of its original thickness during a washing step. This phenomenon was exploited to immobilize the...

A Simple Means to Immobilize Enzyme into Conducting Polymers via Entrapment (2006)

Chen, J., Winther-Jensen, B., Lynam, C., Ngamna, O, Moulton, S., Zhang, W., ...

Poly3,4-ethylenedioxy thiophene PEDT, obtained by chemical vapor phase polymerization can shrink to 5% of its original thickness during a washing step. This phenomenon was exploited to immobilize the...

Breakthrough curves and elution profiles of single solutes in case of adsorption isotherms with two inflection points (2006)

Zhang, W., Shan, Y., Seidel-Morgenstern, A.

The shape of breakthrough curves and elution profiles depends strongly on the course of the specific equilibrium functions characterizing the chromatographic system. For a highly efficient system the...

Multi-segment linear gradient optimization strategy based on resolution map in HPLC (2006)

Shan, Y., Zhang, W., Seidel-Morgenstern, A., Zhao, R., Zhang, Y.

Based on the mechanism of chromatographic retention (the relationship between the retention of solute and the mobile phase conditions) and method of resolution map, several methods of optimizing...

Municipal District Heating and Cooling Co-generation System Feasibility Research (2006)

Zhang, W., Guan, W., Pan, Y., Ding, G., Song, X., Zhang, Y., ...

In summer absorption refrigerating machines provide cold water using excess heat from municipal thermoelectric power plant through district heating pipelines, which reduces peak electric load from...

Thermal Economic Analysis of an Underground Water Source Heat Pump System (2006)

Zhang, W., Lin, B.

The paper presents the thermal economic analysis of an underground water source heat pump system in a high school building based on usage per exergy cost as an evaluation standard, in which the black...

Research on the Effect of a Planting Roof on the Thermal Load of a Business Building (2006)

Zhang, W., Wu, J., Wei, Y., Gao, X.

A pair of comparative testing rooms (one with an ordinary roof and the other with a planting roof) was established in our laboratory, and in- situ measurement (in summer) data have been collected and...

Research on the Integration Characteristics of Cooling Energy Recovery from Room Exhausting Cool Air in Summer (2006)

Zhang, W., Wu, J., Wei, Y.

Currently, the design and construction of buildings and building energy systems are far from reasonable. The requirement and consumption of primary energy resources is aggravated, the use of building...

Municipal District Heating and Cooling Co-generation System Feasibility Research (2006)

Zhang, W., Guan, W., Pan, Y., Ding, G., Song, X., Zhang, Y., ...

In summer absorption refrigerating machines provide cold water using excess heat from municipal thermoelectric power plant through district heating pipelines, which reduces peak electric load from...

Thermal Economic Analysis of an Underground Water Source Heat Pump System (2006)

Zhang, W., Lin, B.

The paper presents the thermal economic analysis of an underground water source heat pump system in a high school building based on usage per exergy cost as an evaluation standard, in which the black...

Research on the Effect of a Planting Roof on the Thermal Load of a Business Building (2006)

Zhang, W., Wu, J., Wei, Y., Gao, X.

A pair of comparative testing rooms (one with an ordinary roof and the other with a planting roof) was established in our laboratory, and in- situ measurement (in summer) data have been collected and...

Research on the Integration Characteristics of Cooling Energy Recovery from Room Exhausting Cool Air in Summer (2006)

Zhang, W., Wu, J., Wei, Y.

Currently, the design and construction of buildings and building energy systems are far from reasonable. The requirement and consumption of primary energy resources is aggravated, the use of building...

A Simple Means to Immobilize Enzyme into Conducting Polymers via Entrapment (2006)

Chen, J., Winther-Jensen, B., Lynam, C., Ngamna, O, Moulton, S., Zhang, W., ...

Poly3,4-ethylenedioxy thiophene PEDT, obtained by chemical vapor phase polymerization can shrink to 5% of its original thickness during a washing step. This phenomenon was exploited to immobilize the...

Magnetic properties of sediments from Lake Chaohu and its response to sedimentary dynamics (2006)

Xie, H., Zhang, W., Gu, C., Dai, X., Yu, L., Dearing, J.A.

Magnetic study on core sediments from western Lake Chaohu and soils from Hangbu River Catchment suggests that magnetite is the dominant magnetic mineral, and soils from Hangbu River Catchment are the...

Calibration of the Rossi X-ray Timing Explorer Proportional Counter Array (2005)

Jahoda, K., Markwardt, C. B., Radeva, Y., Rots, A., Stark, M. J., Swank, J. H., ...

We present the calibration and background model for the Proportional Counter Array (PCA) aboard the Rossi X-ray Timing Explorer (RXTE). The energy calibration is systematics limited below 10 keV with...

Low-voltage ionization of air with carbon-based materials (2005)

Peterson, M S, Zhang, W, Fisher, Timothy, Garimella, Suresh

Polycrystalline diamond and carbon nanotubes (CNTs) exhibit excellent vacuum field emission properties, characterized by low turn-on voltage and high current density. Their atmospheric field emission...

Low-voltage ionization of air with carbon-based materials (2005)

Peterson, M. S., Zhang, W., Fisher, T. S., Garimella , S V

Polycrystalline diamond and carbon nanotubes (CNTs) exhibit excellent vacuum field emission properties, characterized by low turn-on voltage and high current density. Their atmospheric field emission...

High field x-ray diffraction study on a magnetic-field-induced valence transition in YbInCu4 (2005)

Matsuda, Y. H., Inami, T., Ohwada, K., Murata, Y., Nojiri, H., Murakami, Y., ...

We report the first high-field x-ray diffraction experiment using synchrotron x-rays and pulsed magnetic fields exceeding 30 T. Lattice deformation due to a magnetic-field-induced valence transition...

Intensity modulation and polarization rotation of visible light by dielectric planar chiral metamaterials (2005)

Zhang, W., Potts, A., Papakostas, A., Bagnall, D.M.

We have demonstrated how dielectric planar chiral surfaces can both modulate the intensity and change the polarization state of visible light diffracted from patterned surfaces. These effects are...

Intensity modulation and polarization rotation of visible light by dielectric planar chiral metamaterials (2005)

Zhang, W., Potts, A., Papakostas, A., Bagnall, D.M.

We have demonstrated how dielectric planar chiral surfaces can both modulate the intensity and change the polarization state of visible light diffracted from patterned surfaces. These effects are...

Intensity modulation and polarization rotation of visible light by dielectric planar chiral metamaterials (2005)

Zhang, W., Potts, A., Papakostas, A., Bagnall, D.M.

We have demonstrated how dielectric planar chiral surfaces can both modulate the intensity and change the polarization state of visible light diffracted from patterned surfaces. These effects are...

Intensity modulation and polarization rotation of visible light by dielectric planar chiral metamaterials (2005)

Zhang, W., Potts, A., Papakostas, A., Bagnall, D.M.

We have demonstrated how dielectric planar chiral surfaces can both modulate the intensity and change the polarization state of visible light diffracted from patterned surfaces. These effects are...