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Random Networks and Aligned Arrays of Single-Walled Carbon Nanotubes for Electronic Device Applications

Nano Research 2008年第4期1卷 259-272页

作者： qing cao John A.Rogers Department of Chemistry University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA Department of Materials Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA Department of Electrical and Computer Engineering University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA Department of Mechanical Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA Frederick-Seitz Materials Research Laboratory University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA

Singled-walled carbon nanotubes(SWNTs),in the form of ultrathin fi lms of random networks,aligned arrays,or anything in between,provide an unusual type of electronic material that can be integrated into circuits in a conventional,scalable *** electrical,mechanical,and optical properties of such fi lms can,in certain cases,approach the remarkable characteristics of the individual SWNTs,thereby making them attractive for applications in electronics,sensors,and other *** review discusses the synthesis and assembly of SWNTs into thin film architectures of various types and provides examples of their use in digital electronic circuits with levels of integration approaching 100 transistors and in analog radio frequency(RF)systems with operating frequencies up to several gigahertz,including transistor radios in which SWNT transistors provide all of the active *** results represent important steps in the development of an SWNT-based electronics technology that could fi nd utility in areas such as fl exible electronics,RF analog devices and others that might complement the capabilities of established systems.

关键词： Carbon nanotubes electronic devices thin-film transistors

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Hydrophilic MnO_(2) nanowires coating with o-fluoroaniline for electrocatalytic water oxidation

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Chinese Journal of Structural Chemistry 2023年第8期42卷 31-36页

作者： Lingshuang qin Wei Zhang Rui cao Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China

In the active Mn_(4)cao_(5) cluster of the natural water oxidation system,one of the dangling Mn atoms is surrounded by water molecules through coordination and hydrogen *** means that the enrichment of water molecules around the Mn catalysts has a positive effect on the water oxidation *** by nature photosynthesis,the hydrophilic surfaces are believed to be able to capture water molecules to assist water ***,we report MnO_(2)@PFANI nanowires with improved mass transfer efficiency and conductivity for electrocatalytic water *** as-prepared nanowires are synthesized by coating hydrophilic polymers on MnO_(2) *** hydrophilic surface captures water molecule and promotes mass transfer processes,and the conductivity of the polymer can also increase charge transfer *** reach a current density of 10 mA cm^(-2),a low overpotential of 440 mV is required in a 1.0 M KOH solution for the MnO_(2)@PFANI *** hydrophilicity and conductivity are systematically investigated by both physical and electrochemical *** study provides a surface engineering idea for the fabrication of efficient electrocatalysts.

关键词： Electrocatalysis Oxygen evolution reaction MnO_(2) Hydrophilicity Conductivity

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Fermion Determinant with Dynamical Chiral Symmetry Breaking

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Communications in Theoretical Physics 2002年第8期38卷 185-188页

作者： LU qin YANG Hua WANG qing Department of Physics Tsinghua University Beijing 100084 China Department of Physics Tsinghua University Beijing 100084 China Institute of Electronic Technology Information Engineering University Zhengzhou 450004 China Department of Physics Tsinghua University Beijing 100084 China Institute of Theoretical Physics Academia Sinica Beijing 100080 China

One-loop fermion determinant is discussed for the case in which the dynamical chiral symmetry breakingcaused by momentum-dependent fermion self-energy ∑(p2) takes place. The obtained series generalizes the heat kerne... 详细信息

关键词： determinant, dynamical symmetry breaking, heat kernel

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Gauge Covariance and Momentum Space Asymptotically Non-logarithmic Total Derivatives

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Communications in Theoretical Physics 2008年第2期49卷 431-434页

作者： LU qin ZHANG Ying WANG qing Department of Physics Tsinghua University Beijing 100084 China

We focus on a new gauge symmetry keeping regularization scheme for momentum integration and point out that dropping out momentum space asymptotic non-logarithmic total derivative divergent integrations in quantum fiel... 详细信息

关键词： gauge covariance momentum integration total derivative

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New Families of Soliton and Periodic Solutions of Bose-Einstein Condensation in Linear Magnetic Field and Time-Dependent Laser Field

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Communications in Theoretical Physics 2005年第2X期44卷 209-212页

作者： MEI Jian-qin ZHANG Hong-qing Department of Applied Mathematics Dalian University of Technology Dalian 116024 China

By using a new generally projective Riccati equation method and with the help of symbolic computation,we consider a nonlinear Gross-Pitaevskii equation with weak bias magnetic and time-dependent laser fields. As a res... 详细信息

关键词： Bose-Einstein condensation Gross-Pitaevskii equation soliton solution periodic solution

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Ranks of the Common Solution to Six Quaternion Matrix Equations

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Acta Mathematicae Applicatae Sinica 2011年第3期27卷 443-462页

作者： qing-wen Wang Yan Zhou qin Zhang Department of Mathematics Shanghai University 99 Shangda Road Shanghai 200444 China

A new expression is established for the common solution to six classical linear quaternion matrix equations A 1 X = C 1 , X B 1 = C 3 , A 2 X = C 2 , X B 2 = C 4 , A 3 X B 3 = C 5 , A 4 X B 4 = C 6 which was investigated recently by Wang, Chang and Ning （Q. Wang, H. Chang, Q. Ning, The common solution to six quaternion matrix equations with applications, Appl. Math. Comput. 195： 721-732 （2008））. Formulas are derived for the maximal and minimal ranks of the common solution to this system. Moreover, corresponding results on some special cases are presented. As an application, a necessary and sufficient condition is presented for the invariance of the rank of the general solution to this system. Some known results can be regarded as the special cases of the results in this paper.

关键词： system of matrix equations quaternion matrix minimal rank maximal rank linear matrixexpression generalized inverse

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A free monoid containing all prefix codes

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Applied Mathematics(A Journal of Chinese Universities) 2024年第4期39卷 596-603页

作者： cao Chun-hua LIU qin YANG Di School of Mathematics and Statistics Yunnan UniversityKunming 650405China Chongqing Tongnan Experimental Middle School Chongqing 402660China Zhonghua Vocational College Yunnan University of Finance and EconomicsKunming 650221China

In this paper,we exhibit a free monoid containing all prefix codes in connection with the sets of i-th powers of primitive words for all i≥*** extends two results given by Shyr and Tsai in 1998 at the same time.

关键词： prefix code free monoid primitive word maximal prefix code

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Effects of Correlated Noises on Statistic Property of Single-Mode Laser

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Chinese Physics Letters 1996年第8期13卷 583-586页

作者： WEI Xue-qin cao Li WU Da-jin National Laboratory of Laser Technology and Department of PhysicsHuazhong University of Science and TechnologyWuhan 430074 Department of Physics Huazhong University of Science and TechnologyWuhan 430074 CCAST(World Laboratory) P.O.Box 8730Beijing 100080

The loss-noise model with saturation effects driven by correlated additive and multiplicative white noise is *** analytical expression of the stationary probability distribution is *** mean,variance and skewness of the steady-state laser intensity are calculated *** have also found the correlated noises affect the statistic properties of laser ***,the laser intensity is locked at a fixed value when correlated parameterλis equal to-1.

关键词： noise intensity additive

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The Mechanism of Water Oxidation from Mn-Based Heterogeneous Electrocatalysts

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Chinese Journal of Structural Chemistry 2022年第4期41卷 22-33页

作者： Shujiao Yang Lingshuang qin Wei Zhang Rui cao Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an 710119China

Searching for a renewable energy system is always the goal to fulfill sustainable development for the *** oxidation is considered as a crucial reaction to attain sustainable energy *** by the biological Mn_(4)cao_(5)cluster,considerable effort has been devoted to developing highly efficient Mn-based heterogeneous catalysts and exploring intrinsic mechanism for water *** review begins with describing the structural characteristics of the Mn_(4)Ca O_(5)cluster and the proposed catalytic ***,the structural characteristics of synthetic Mn-based heterogeneous catalyst are summarized,with emphasis on the understanding of reaction mechanisms and the rate-determining ***,the strategy of understanding the catalytic mechanism of Mn-based water oxidation is prospected.

关键词： water oxidation Mn-based electrocatalysts oxygen evolution reaction structure mechanism

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Kinetics of the decomposition of dimethylhexane-1,6-dicarbamate to1,6-hexamethylene diisocyanate

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Chinese Journal of Chemical Engineering 2015年第5期23卷 775-779页

作者： Yan cao Huiquan Li Ningbo qin Ganyu Zhu National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences

The kinetics of the decomposition of dimethylhexane-1,6-dicarbamate to 1,6-hexamethylene diisocyanate was studied. A consecutive reaction model was established and the reaction orders for the two steps were confirmed to be 1 and 1.3 by the integral test method and the numerical differential method, respectively. The activation energies of the two steps were （56.94 4±5.90） kJ·mol^-1 and （72.07±3.47） kJ·mol^-1 with the frequency factors exp（ 12.53±1.42） min^- 1 and （ 14.254±0.84） tool^-0.33. L^0.33·min^-1, respectively. Based on the kinetic model obtained, the progress of the reaction can be calculated under given conditions.

关键词： Kinetics 1 6-Hexamethylene diisocyanate Decomposition Dimethylhexane-1 6-dicarbamate

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