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Effect of N-Doping on Absorption and Luminescence of Anatase TiO_(2) Films

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Chinese Physics Letters 2012年第2期29卷 204-207页

作者： XIANG Xia SHI xiao-Yan GAO xiao-Lin JI Fang WANG Ya-Jun LIU Chun-Ming zu xiao-tao Department of Applied Physics University of Electronic Science and Technology of ChinaChengdu 610054 Institute of Mechanical Manufacture Technology China Academy of Engineering PhysicsMianyang 621900

Anatase TiO_(2) films are deposited on glass substrates at different oxygen partial pressures of 0.8-1.6 *** temperature N ion implantation is conducted in the films at ion fluences up to 5 × 10^(17) ions/cm^(2).UV-visible absorption and photoluminescence (PL) are *** the increase of N ion fluences,the band gap of TiO_(2) decreases and the absorbance increases.X-ray photoelectron spectroscopy (XPS) confirms the formation of O-Ti-N nitride after implantation,resulting in the red shift of the band *** PL intensity of the deposited films increases with the increasing oxygen partial pressure and decreases remarkably due to the irradiation defects induced by ion implantation.

关键词： implantation fir visible

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热辅助磁盘探针存储的研究

物理学报 2006年第8期55卷 4271-4275页

作者：章黎祖小涛电子科技大学应用物理系成都610054

描述了一种热辅助磁盘存储技术,该技术可应用于未来的高密度磁盘存储.记录介质是一种CoNiPt多层膜,它可用作垂直模式的磁记录介质.使用扫描隧道显微镜(STM)产生的隧道电流作为热源对磁膜进行局部加热.隧道电流随着加在STM针尖与磁膜之... 详细信息

描述了一种热辅助磁盘存储技术,该技术可应用于未来的高密度磁盘存储.记录介质是一种CoNiPt多层膜,它可用作垂直模式的磁记录介质.使用扫描隧道显微镜(STM)产生的隧道电流作为热源对磁膜进行局部加热.隧道电流随着加在STM针尖与磁膜之间的脉冲电压幅值的增大而增大.实验结果显示了圆形记录点在磁膜上生成,记录点尺寸与电压值相关,阈值电压为4V左右.当电压高于阈值时,记录点尺寸随着电压的增大而增大,平均尺寸为170nm;当电压低于阈值时,未发现记录点.一个简单的模型解释了以上实验现象.

关键词：扫描隧道显微镜热辅助磁盘存储技术高密度磁盘存储

Laser Cleaning Techniques for Removing Surface Particulate Contaminants on Sol-Gel SiO_(2) Films

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Chinese Physics Letters 2011年第7期28卷 133-136页

作者： ZHANG Chun-Lai LI Xi-Bin WANG Zhi-Guo LIU Chun-Ming XIANG Xia LV Hai-Bing YUAN xiao-Dong zu xiao-tao School of Physical Electronics University of Electronic Science and Technology of ChinaChengdu 610054 Research Center of Laser Fusion China Academy of Engineering PhysicsMianyang 621900

Dry laser cleaning(DLC)and laser shockwave cleaning(LSC)are used to remove the particulate contamination from SiO_(2) sol−gel optical *** results show that the LSC with a shockwave initiated by plasma formation under a focused laser beam pulse offers much better efficiency than *** particles up to 10µm on SiO_(2 )films can be removed without substrate damage at a gap distance of 0.5 mm,and a more uniform surface microstructure can be obtained after ***,it is demonstrated that the transmittance of contaminated SiO2 films can be restored to the as-deposited value after the LSC on dispersed-particle *** has potential applications in engineering-oriented large components.

关键词： removed remove moving

Research on blade tip clearance cavitation and turbulent kinetic energy characteristics of axial flow pump based on the partially-averaged Navier-Stokes model

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Journal of Hydrodynamics 2024年第1期36卷 184-201页

作者： xiao-qi Jia Shuai-kang Zhang zu-chao Zhu Key Laboratory of Fluid Transmission Technology of Zhejiang Province Zhejiang Sci-Tech UniversityHangzhou310018China

To reveal the cavitation forms of tip leakage vortex(TLV)of the axial flow pump and the flow mechanism of the flow field,this research adopts the partially-averaged Navier-Stokes(PANS)model to simulate the cavitation values of an axial flow pump,followed by experimental *** experimental result shows that compared with the shear stress transport(SST)k-ωmodel,the PANS model significantly reduces the eddy viscosity of the flow field to make the vortex structure clearer and allow the turbulence scale to be more robustly *** cavitation area within the axial flow pump mainly comprises of TLV cavitation,clearance cavitation and tip leakage flows combined effect of triangular cloud cavitation *** formation and development of cavitation are accompanied by the formation and evolution of vortex,and variations in vortex structure also generate and promote the development of *** addition,an in-depth analysis of the relationship between the turbulent kinetic energy(TKE)transport equation and cavitation patterns was also conducted,finding that the regions with relatively high TKE are mainly distributed around gas/liquid boundaries with serious cavitation and evident gas-liquid *** phenomenon is mainly attributed to the combined effect of the pressure action term,stress diffusion term and TKE production term.

关键词： Cavitation axial flow pump tip leakage vortex(TLV) partially-averaged Navier-Stokes(PANS)model turbulent kinetic energy(TKE)

The Structure Evolution of Fused Silica Induced by CO2 Laser Irradiation

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Chinese Physics Letters 2012年第4期29卷 108-111页

作者： LIU Chun-Ming JIANG Yong LUO Cheng-Si SHI xiao-Yan REN Wei XIANG Xia WANG Hai-Jun HE Shao-Bo YUAN xiao-Dong LV Hai-Bing ZHENG Wan-Guo zu xiao-tao Research Center of Laser Fusion China Academy of Engineering PhysicsMianyang 621900 Department of Applied Physics University of Electronic Science and Technology of ChinaChengdu 610054

The structure evolution of fused silica induced by CO2 laser irradiation (with a wavelength of 10.6 μm) is studied in *** the non-evaporation mitigation process,the irradiation time should be long enough to completely eliminate ***,there is a raised rim around the mitigated *** rim height is enhanced when the irradiation time increases,and the mitigated site can lead to off-axis and on-axis downstream light *** shrinkage occurs during the irradiation and rapid cooling processes,and this may be due to a decrease in the Si O Si bond *** distribution of debris overlaps with the maximum phase retardance induced by *** debris arouses an enhanced light absorption in the region from 220nm to 800nm.

关键词： debris eliminate overlap

Limits of Riemann Solutions for Isentropic MHD in a Variable Cross-Section Duct as Magnetic Field Vanishes

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Chinese Annals of Mathematics,Series B 2024年第4期45卷 637-660页

作者： Wancheng SHENG tao xiao Department of Mathematics Shanghai UniversityShanghai 200444China Shanghai Aircraft Design and Research Institute Shanghai 201210China.

The stability for magnetic field to the solution of the Riemann problem for the polytropic fluid in a variable cross-section duct is *** the vanishing magnetic field method,the stable solutions are determined by comparing the limit solutions with the solutions of the Riemann problem for the polytropic fluid in a duct obtained by the entropy rate admissibility criterion.

关键词： Variable duct Magnetogasdynamics Riemann problem Stability Vanishing magnetic field method

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MgS晶体结构性质的密度泛函研究

物理学报 2005年第11期54卷 5301-5307页

作者：陈中钧肖海燕祖小涛电子科技大学应用物理系成都610054

采用基于密度泛函理论(DFT)基础上的第一性原理赝势平面波方法对MgS晶体四种构型(B1,B2,B3,B4)的体相性质进行了系统研究.计算结果表明,B1构型的晶体是间接带隙型半导体,而B2,B3和B4构型的晶体则是直接带隙型材料,其中B2构型的带隙宽度... 详细信息

采用基于密度泛函理论(DFT)基础上的第一性原理赝势平面波方法对MgS晶体四种构型(B1,B2,B3,B4)的体相性质进行了系统研究.计算结果表明,B1构型的晶体是间接带隙型半导体,而B2,B3和B4构型的晶体则是直接带隙型材料,其中B2构型的带隙宽度最窄,其值为0.42eV.在压力不超过200.3GPa时,B1构型的MgS晶胞是最稳定的,当压力大于该值时,会发生B1构型到B2构型的转化.

关键词： MgS,第一性原理赝势平面波方法,电子结构,转化压力密度泛函理论(DFT) 结构性质 MgS 晶体带隙宽度第一性原理计算结果系统研究构型

High-yield production of porous carbon spheres derived from enzymatic hydrolysis lignin for zinc ion hybrid capacitors

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Frontiers of Chemical Science and Engineering 2024年第2期18卷 127-136页

作者： tao Huang Xihong zu Jianhui Ma Wenbin Jian Xueqing Qiu Wenli Zhang Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China School of Advanced Manufacturing Guangdong University of TechnologyJieyang 522000China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China

The widespread implementation of supercapacitors is hindered by the limited energy density and the pricey porous carbon electrode *** cost of porous carbon is a significant factor in the overall cost of supercapacitors,therefore a high carbon yield could effectively mitigate the production cost of porous *** study proposes a method to produce porous carbon spheres through a spray drying technique combined with a carbonization process,utilizing renewable enzymatic hydrolysis lignin as the carbon source and KOH as the activation *** purpose of this study is to examine the relationship between the quantity of activation agent and the development of morphology,pore structure,and specific surface area of the obtained porous carbon *** demonstrate that this approach significantly enhances the carbon yield of porous carbon,achieving a yield of 22%in contrast to the conventional carbonization-activation method(9%).The samples acquired through this method were found to contain a substantial amount of mesopores,with an average pore size of 1.59 to 1.85 nm and a mesopore ratio of 25.6%.Additionally,these samples showed high specific surface areas,ranging from 1051 to 1831 m2·g^(−1).Zinc ion hybrid capacitors with lignin-derived porous carbon cathode exhibited a high capacitance of 279 F·g^(−1) at 0.1 A·g^(−1) and an energy density of 99.1 Wh·kg^(−1) when the power density was 80 kW·kg^(−1).This research presents a novel approach for producing porous carbons with high yield through the utilization of a spray drying approach.

关键词： enzymatic hydrolysis lignin porous carbon spheres spray drying zinc ion hybrid capacitors

CRD-CGAN:category-consistent and relativistic constraints for diverse text-to-image generation

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Frontiers of Computer Science 2024年第1期18卷 61-75页

作者： tao HU Chengjiang LONG Chunxia xiao College of Intelligent Systems Science and Engineering Hubei Minzu UniversityEnshi 445000China School of Computer Science Wuhan UniversityWuhan 430072China Key Laboratory of Performing Art Equipment&System Technology Ministry of Culture and TourismBeijing 100007China Meta Reality Labs BurlingameCA94010USA

Generating photo-realistic images from a text description is a challenging problem in computer *** works have shown promising performance to generate synthetic images conditional on text by Generative Adversarial Networks(GANs).In this paper,we focus on the category-consistent and relativistic diverse constraints to optimize the diversity of synthetic *** on those constraints,a category-consistent and relativistic diverse conditional GAN(CRD-CGAN)is proposed to synthesize K photo-realistic images *** use the attention loss and diversity loss to improve the sensitivity of the GAN to word attention and ***,we employ the relativistic conditional loss to estimate the probability of relatively real or fake for synthetic images,which can improve the performance of basic conditional ***,we introduce a category-consistent loss to alleviate the over-category issues between K synthetic *** evaluate our approach using the Caltech-UCSD Birds-200-2011,Oxford 102 flower and MS COCO 2014 datasets,and the extensive experiments demonstrate superiority of the proposed method in comparison with state-of-the-art methods in terms of photorealistic and diversity of the generated synthetic images.

关键词： text-to-image diverse conditional GAN relativi-stic category-consistent