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非层状二维γ-In_(2)Se_(3)的各向异性生长及其光学特性

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原子与分子物理学报 2025年第6期42卷 58-65页

作者：雷子煊张文婷夏晓凤王红艳西南交通大学物理科学与技术学院材料先进技术重点实验室成都610031

非层状二维(2D)γ-In_(2)Se_(3)具有优异的光学和电学性能,在超薄柔性器件和光电探测领域具有广泛的应用前景.然而,相较于层状的类石墨烯材料,非层状材料固有的各向同性化学键,使得其二维各向异性生长面临较大的挑战.本研究构建了一种... 详细信息

非层状二维(2D)γ-In_(2)Se_(3)具有优异的光学和电学性能,在超薄柔性器件和光电探测领域具有广泛的应用前景.然而,相较于层状的类石墨烯材料,非层状材料固有的各向同性化学键,使得其二维各向异性生长面临较大的挑战.本研究构建了一种新的化学气相沉积(CVD)生长策略,成功制备了高质量的2Dγ-In_(2)Se_(3).首次选用低熔点的铟粉为前驱体,有效降低了生长温度.此外,生长过程去除了CVD法合成二维硒化物时不可避免的危险气体H_(2),这不仅能有效抑制InSe副产物的形成,还降低了实验危险性.通过探究原料用量、生长温度及时间等参数对样品形貌和厚度的影响,获得了最佳生长窗口.详细表征了2Dγ-In_(2)Se_(3)的微观形貌、化学组分、晶体结构和光学特性等.结果表明,样品具有强烈的光致发光(PL)效应,与γ-In_(2)Se_(3)的直接带隙属性相吻合.随着厚度的减小,PL峰会发生蓝移,说明光学带隙随之增大.Raman光谱显示,不同厚度的样品其特征峰也会发生移动,说明厚度会影响2Dγ-In_(2)Se_(3)的分子振动行为.由此可见,通过生长参数调控2Dγ-In_(2)Se_(3)的厚度,可实现对其光学带隙和分子振动行为的调控,这将为相关的理论研究和光电器件应用提供基本的材料平台.

关键词：非层状材料二维γ-In_(2)Se_(3) 化学气相沉积各向异性生长带隙

Effect of Spontaneously Generated Coherence and Detuning on 2D Atom Localization in Two Orthogonal Standing-Wave Fields

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Chinese Physics Letters 2014年第3期31卷 77-81页

作者： ZHAO Shun-cai WU Qi-xuan GONG Ai-Ling Department of Physics Kunming University of Science and Technology Kunming 650500 College English Department Kunming University of Science and Technology Kunming 650500

Two-dimensional （2D） atom localization via the spontaneously generated coherence （SGC） and detunings associated with the probe and standing-wave driving fields in a three-level V-type atomic system are investigated. In the gain process, two equal and tunable peak maxima of position distribution in the – plane via the detunings are observed. However, one decreasing and the other increasing peak maxima in the absorption process via the SGC are achieved in the quadrants I and III of the x–y plane. A better resolution and more novelty for the 2D atom localization in our scheme are obtained.

关键词： STANDING waves RESEARCH COHERENCE (Optics) ORTHOGONAL functions WAVELENGTHS PHYSICS research

P2X7 Receptor in Alcoholic Steatohepatitis and Alcoholic Liver Fibrosis

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Journal of Clinical and Translational Hepatology 2022年第6期10卷 1205-1212页

作者： Guo-Qing xia Qian Fang Jun-Nan cai Zi-xuan Li Feng-Zhi Zhang Xiong-Wen Lv Institute for Liver Diseases of Anhui Medical University HefeiAnhuiChina The Key Laboratory of Anti-inflammatory and Immune Medicines Ministry of EducationHefeiAnhuiChina Inflammation and Immune-Mediated Diseases Laboratory of Anhui Province Anhui Institute of Innovative DrugsSchool of PharmacyAnhui Medical UniversityHefeiAnhuiChina Wannan Medical College Yijishan HospitalAffiliated Hospital 1WuhuAnhuiChina

Alcoholic liver disease is one of the most common chronic liver diseases in the *** is a liver disease caused by prolonged heavy drinking and its main clinical features are nausea,vomiting,enlargement of the liver,and *** studies suggest that Kupffer cell-mediated inflam-matory response is a core driver in the development of alco-holic steatohepatitis and alcoholic liver *** a danger signal,extracellular ATP activates the assembly of NLPR3 inflammasome by acting on purine P2X7 receptor,the ac-tivated NLRP3 inflammasome prompts ASC to cleave pro-cCaspase-1 into active caspase-1in *** caspase-1 promotes the conversion of pro-IL-1βto IL-1β,which fur-ther enhances the inflammatory ***,we briefly review the role of the P2X7R-NLRP3 inflammasome axis in the pathogenesis of alcoholic liver disease and the evolution of alcoholic steatohepatitis and alcoholic liver ***-ulation of the inflammasome axis of P2X7R-NLRP3 may be a new approach for the treatment of alcoholic liver disease.

关键词： ATP P2X7 receptor Kupffer cells NLRP3 inflammasome Alcoholic steatohepatitis Alcoholic liver fibrosis

A locking-free anisotropic nonconforming rectangular finite element approximation for the planar elasticity problem

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Applied Mathematics(A Journal of Chinese Universities) 2008年第1期23卷 9-18页

作者： SHI Dong-yang WANG cai-xia Dept. of Math. Zhengzhou Univ. Zhengzhou 450052 China. Faculty of Math. and Inform. Sci. North China Univ. of Water Conservancy and Electric PowerZhengzhou 450011 China.

This paper deals with a new nonconforming anisotropic rectangular finite element approximation for the planar elasticity problem with pure displacement boundary condition. By use of the special properties of this element, and by introducing the complementary space and a series of novel techniques, the optimal error estimates of the energy norm and the L^2-norm are obtained. The restrictions of regularity assumption and quasi-uniform assumption or the inverse assumption on the meshes required in the conventional finite element methods analysis are to be got rid of and the applicable scope of the nonconforming finite elements is extended.

关键词： anisotropic mesh locking-free nonconforming finite element optimal error estimate complementary space.

Photochemical multicomponent transformation of acceptor-only diazoalkanes by merging their cycloaddition and carbene reactivities

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Chinese Chemical Letters 2023年第9期34卷 138-142页

作者： Bao-Gui cai Guo-Yong Xu Jun xuan Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials College of Chemistry&Chemical EngineeringAnhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of EducationHefei 230601China Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China

Herein,we report an efficient photochemical method for the synthesis of poly-substituted pyrazoles through a multicomponent reaction of acceptor-only diazoalkanes,alkynes,and solvents(cyclic ethers or nitriles).The key to this success was driven by the photolysis of acceptor-only diazoalkanes to form free carbene species and the fast in situ[3+2]-cycloaddition formation of nucleophilic N–H pyrazole *** work also serves as an entry to allow future reaction design on the combination of carbene reactivity of diazoalkanes with their other reaction modes.

关键词： Photochemical synthesis Multicomponent reaction Diazoalkanes Carbene Pyrazoles

Predicting Chromatographic Retention Time of C10-Chlorinated Paraffins in Gas Chromatography-Mass Spectrometry Using Quantitative Structure Retention Relationship

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Chemical Research in Chinese Universities 2015年第2期31卷 192-197页

作者： xia Zhenzhen cai Wensheng SHAO Xueguang Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) State Key Laboratory of Medicinal Chemical Biology Research Center for Analytical Sciences College of Chemistry Nankai University Tianjin 300071 P. R. China

Chlorinated paraffins（CPs） are potential persistent organic pollutants（POPs）, which threat the safety of environment and organisms. However, the analysis of CPs is a difficult task due to their complex composition containing thousands of congeners. In the present work, quantitative structure retention relationship（QSRR） of CPs was studied. A total of 470 molecular descriptors were generated, for describing the structures of 28 CPs and 12 descriptors relevant to retention time of the CPs were selected by stepwise regression. Then, QSRR models between retention time on the one hand and the selected descriptors on the other hand were established by multiple linear regres- sion（MLR）, partial least squares（PLS） and least square support vector regression（LS-SVR）. The result shows that PLS model is better than MLR and LS-SVR, obtaining a squared correlation coefficient（r2） of 0.9996 and a root mean squared error（RMSE） of 0.015. The PLS model was then used to predict the retention time of 49 C10-CPs. Three of them were investigated by gas chromatography coupled with mass spectrometry（GC-MS）. A well-defined correlation was found between the measured retention time and the predicted value.

关键词： Chlorinated paraffin Multivariate calibration Retention time Quantitative structure retention relationship

Generalized Multi-component TC Hierarchy and Its Multi-component Integrable Coupling System

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Communications in Theoretical Physics 2005年第5X期44卷 793-798页

作者： xia Tie-Cheng YOU Fu-cai Department of Mathematics Shanghai University Shanghai 200444 China

A new 3M-dimensional Lie algebra X is constructed firstly. Then, the corresponding loop algebra X is produced, whose commutation operation defined by us is as simple and straightforward as that in the loop algebra *** follows that a generalscheme for generating multi-component integrable hierarchy is proposed. By taking advantage of X, a new isospectral problem is established, and then well-known multi-component TC hierarchy is obtained. Finally,an expanding loop algebra FM of the loop algebra X is presented. Based on the FM, the multi-component integrable coupling system of the generalized multi-component TC hierarchy has been worked out. The method in this paper can be applied to other nonlinear evolution equations hierarchies. It is easy to find that we can construct any finite-dimensional Lie algebra by this approach.

关键词： loop algebra multi-component TC hierarchy multi-component integrable coupling system

The Polynomial Modules over Quantum Group U_(q)(sl3)

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Algebra Colloquium 2022年第4期29卷 663-668页

作者： Limeng xia Qianqian cai Jiao Zhang Institute of Applied System Analysis Jiangsu University ZhenjiangJiangsu 212013China Department of Mathematics Shanghai UniversityShanghai 200444China

Let g be a finite dimensional complex simple Lie algebra with Cartan subalgebraη.Then C[η]has a g-module structure if and only if g is of type A or of type C;this is called the polynomial module of rank one,In the quantum version,the rank one polynomial modules over U_(q)(sl_(2))have been *** this paper,we prove that the quantum group U_(q)(sl_(3))has no rank one polynomial module.

关键词： quantum group polynomial module rank one

Electroless deposition of Au nanoparticles on reduced graphene oxide/polyimide film for electrochemical detection of hydroquinone and catechol

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Frontiers of Materials Science 2017年第3期11卷 262-270页

作者： xuan SHEN xiaohong xia Yongling DU Chunming WANG College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China

An electrochemical sensor for determination of hydroquinone （HQ） and catechol （CC） was developed using Au nanoparticles （AuNPs） fabricated on reduced graphene oxide/polyimide （PIIRGO） film by electroless deposition. The electrochemical behaviors of HQ and CC at PIIRGO-AuNPs electrode were investigated by cyclic voltammetry （CV） and differential pulse voltammetry （DPV）. Under the optimized condition, the current responses at PI/RGO-AuNPs electrode were linear over ranges from 1 to 654 mol/L for HQ and from 2 to 1289 mol/L for CC, with the detection limits of 0.09 and 0.2 mollL, respectively. The proposed electrode exhibited good reproducibility, stability and selectivity. In addition, the proposed electrode was successfully applied in the determination of HQ and CC in tap water and the Yellow River samples.

关键词： electroless Au nanoparticles hydroquinone catechol sensor