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Structure of a Phase-Separating System in the Presence of Oscillatory Particles

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Communications in Theoretical Physics 2004年第5X期42卷 773-778页

作者： HUANGFu-Bin zhuyue-jin LOUSen-Yue physicsDepartment ShanghaiJiaoTongUniversityShanghai200030China physicsDepartment NingboUniversityNingbo315211China

We numerically simulate the processing of the phase separation of the polymer blend-particle system under fluctuating fields by new discretization's form. Due to the presence of oscillatory particles which have an affinity for one of the components, the ordering mechanism of phase separation will be changed. By changing the oscillatory frequency ω and amplitude γ, we can find the formation of the striped structures either parallel or perpendicular to the oscillatory direction and obtain a diagram describing the orientational ordering of the domain structures.

关键词：共混聚合物相位独立性薄膜材料动力学结构

Painleve Nonstandard Truncation Expansion Solutions of Dynamics Equation ofDiblock Copolymer

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Communications in Theoretical Physics 2005年第3期43卷 561-566页

作者： QIANXian-Min zhuyue-jin HUANGFu-Bin physicsDepartment ShanghaiJiaoTongUniversityShanghai200030China／／physicsDepartmentShaoxingCollegeofArtsandSciencesShaoxing312000China PhysicsDepartment NingboUniversityNingbo315211China PhysicsDepartment ShanghaiJiaoTongUniversityShanghai200030China

Through Pickering's and extended Painleve nonstandard truncated expansionmethod, this paper solves the phase-separating dynamics equation of diblock copolymer, and obtainsvarious exact solutions. We discuss non-comple... 详细信息

关键词： Painleve nonstandard truncated expansion phase separation diblockcopolymer hyperbolic function elliptic function

Quantum Fluctuation of a Mesoscopic Inductance Coupling Circuit at Finite Temperature

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Communications in Theoretical Physics 2003年第4期39卷 447-450页

作者： SONGTong－Qiang zhuyue－jin DepartmentofPhysics NingboUniversityNingbo315211China

We study the quantization of mesoscopic inductance coupling circuit and discuss its time evolution. Bymeans of the thermal field dynamics theory we study the quantum fluctuation of the system at finite temperature.

关键词： mesoscopic inductance coupling circuit quantum fluctuation Joule heat effects

N—Particle Entangled States of Continuum Variables

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Communications in Theoretical Physics 2003年第3期39卷 275-278页

作者： SONGTong－Qiang zhuyue－jin DepartmentofPhysics NingboUniversityNingbo315211China

We construct the n-particle entangled states |β>θ in n-mode Fock space, and examine their completeness relation and partly non-orthonormal property. Their Schmidt decomposition and entangled operator are manifestly ... 详细信息

关键词： N-particle entangled state Schmidt decomposition entangled operator

Phase Properties of Nonlinear Coherent States

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Communications in Theoretical Physics 2002年第11期37卷 606-610页

作者： SONGTong－Qing zhuyue－jin DepartmentofPhysics NingboUniversityNingbo315211China

Using the Pegg-Barnett formalism we study the phase probability distributions and the squeezing effects of measured phase operators in the nonlinear coherent states introduced by R.L. de Matos Filho and W. Vogel to describe the center-of mass motion of a trapped ion and the q-coherent states. Moreover, we have obtained the completeness relation of nonlinear coherent states and proved that the q-Fock state \n>(q) introduced in many papers is, in fact, the usual Fock state.

关键词： nonlinear coherent state phase probability distribution measured phase operators

A Fair Off-Line E-Cash System with Group Signature

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Wuhan University Journal of Natural Sciences 2004年第5期9卷 745-748页

作者： SUYun-Xue zhuyue-fei NetEngineeringDepartmentofPLAInformationEngineeringUniversity Zhengzhou450002HenanChina

This paper describes the research results and development of fair off-line e-cash systems so far, and points out that in these systems, the bank can compute the double-spender’s account secret key, thus the bank can impersonate the double-spender to withdraw from the double-spender’s account. This article utilizes anonymity control and group signature to address this shortcoming. Key words electronic cash - anonymity control - group signature CLC number TP 309 Foundation item: Supported by the National Natural Science Fundation of China (90204015)Biography: SU Yun-xue (1975-), male, Ph. D. research direction: the software and theory of computer and information security.

关键词： electronic cash anonymity control group signature

A Formal Model for the Security of Proxy Signature Schemes

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Wuhan University Journal of Natural Sciences 2005年第1期10卷 275-278页

作者： GUChun-xiang zhuyue-fei ZHANGYa-juan NetworkEngineeringDepartment InformationEngineeringUniversityZhengzhou450002HenanChina

This paper provides theoretical foundations for the secure proxy signatureprimitive. We pres-enta formal model for the security of proxy signature schemes, which defines thecapabilities of the adversary and the security goals to capture which mean for a prox-ysignaturescheme to be secure. Then, we present an example of proxy signature scheme that can be proven securein the standard model.

关键词： provable security digital signature proxy signature

An Identity-Based Key-Exchange Protocol

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Wuhan University Journal of Natural Sciences 2005年第1期10卷 235-238页

作者： ZHANGYa-juan zhuyue-fei HUANGQiu-sheng NetworkEngineeringDepartment InformationEngineeringUniversityZhengzhou450002HenanChina

An identity-based key-exchange protocol using a bilinear map is proposed andit is proved SK-sceure( session key secure) in the AM (authenticated links adversarial model)provided the BDDH (bilinear Diftie-Hellmen) assumption is correct. Then we applythe signature-basedauthenticalor to our protocol and obtain an id entity-based key-exchange protocol that is SK-securein the UM (unauthenticated links adversarial model) provided the BDDH assumption is correct.

关键词： AM DM KE protocol authenticator BDDH assumption

Ti-modified Mesoporous Molecular Sieves Containing both Selective Oxidation and Photocatalysis Centers

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Chemical Research in Chinese Universities 2004年第4期20卷 386-391页

作者： GUOZong-ying HEjing DavidG.Evans DUANXue zhuyue-xiang XIAOTian-cun TheKeyLaboratoryofScienceandTechnologyofControllableChemicalReactionsofMinistryofEducation BeijingUniversityofChemicalTechnologyBeijing100029P.R.China StateKeyLaboratoryforStructuralChemistryofUnstableandStableSpecies CollegeofChemistryandMolecularEngineeringPekingUniversityBeijing100871P.R.China InorganicChemistryLaboratory OxfordUniversityOX13QRUK

Mesoporous molecular sieves possessing high mesopore volumes and large specific surface areas were prepared and characterized by means of XRD, low temperature N_2 adsorption-desorption measurements, FT IR, Raman, UV-visible diffuse reflectance and XPS spectroscopy. The materials contain both framework and extra-framework Ti centers which exhibit selective oxidation catalytic activity and photocatalytic activity respectively. The catalysis of selective oxidation was studied with the hydroxylation of benzene with hydrogen peroxide and photochemical activity was studied by the yields of ·OH and H_2O_2, respectively.

关键词： Ti-modified mesoporous materials Framework sites Non-framework sites Selective oxidation Photocatalysis