检索结果-南通市图书馆

Synthesis of free-standing Ga_2O_3 films for flexible devices by water etching of Sr_3Al_2O_6 sacrificial layers

Chinese Physics B 2019年第1期28卷 166-170页

作者： Xia Wang Zhen-Ping Wu Wei Cui Yu-Song Zhi Zhi-Peng Li Pei-Gang Li dao-you guo Wei-Hua Tang Laboratory of Information Functional Materials and Devices School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100876China Center for Optoelectronics Materials and Devices Department of PhysicsZhejiang Sci-Tech UniversityHangzhou 310018China

Flexible electronic devices have attracted much attention due to their practical and commercial value. Integration of thin films with soft substrate is an effective way to fabricate flexible electronic devices. Ga_2O_3 thin films deposited directly on soft substrates would be amorphous mostly. However, the thickness of the thin film obtained by mechanical exfoliation method is difficult to control and the edge of the film is fragile and easy to be damaged. In this work, we fabricated free-standing Ga_2O_3 thin films using the water-soluble perovskite Sr_3Al_2O_6 as a sacrificial buffer layer. The obtained Ga_2O_3 thin films were polycrystalline. The thickness and dimension of the films were controllable. A flexible Ga_2O_3solar-blind UV photodetector was fabricated by transferring the free-standing Ga_2O_3 film on a flexible polyethylene terephthalate substrate. The results displayed that the photoelectric performances of the flexible Ga_2O_3 photodetector were not sensitive to bending of the device. The free-standing Ga_2O_3 thin films synthesized through the method described here can be transferred to any substrates or integrated with other thin films to fabricate electronic devices.

关键词： free-standing Ga2O3 thin film crystalline Sr3Al2O6 flexible photodetector

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A 4×4 metal-semiconductor-metal rectangular deep-ultraviolet detector array of Ga_(2)O_(3)photoconductor with high photo response

引用

Chinese Physics B 2022年第8期31卷 700-704页

作者： Zeng Liu Yu-Song Zhi Mao-Lin Zhang Li-Li Yang Shan Li Zu-Yong Yan Shao-Hui Zhang dao-you guo Pei-Gang Li Yu-Feng guo Wei-Hua Tang College of Integrated Circuit Science and Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China National and Local Joint Engineering Laboratory for RF Integration and Micro-Packing Technologies Nanjing University of Posts and TelecommunicationsNanjing 210023China China Academy of Launch Vehicle Technology Beijing 100076China School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060China Center for Optoelectronics Materials and Devices Department of PhysicsZhejiang Sci-Tech UniversityHangzhou 310018China

A 4×4 beta-phase gallium oxide(β-Ga_(2)O_(3))deep-ultraviolet(DUV)rectangular 10-fingers interdigital metalsemiconductor-metal(MSM)photodetector array of high photo responsivity is *** Ga2O_(3)thin film is prepared through the metalorganic chemical vapor deposition technique,then used to construct the photodetector array via photolithography,lift-off,and ion beam sputtering *** one photodetector cell shows dark current of 1.94 p A,phototo-dark current ratio of 6×10_(7),photo responsivity of 634.15 A·W^(-1),specific detectivity of 5.93×1011cm·Hz1/2·W^(-1)(Jones),external quantum efficiency of 310000%,and linear dynamic region of 108.94 d B,indicating high performances for DUV photo ***,the 16-cell photodetector array displays uniform performances with decent deviation of 19.6%for photo responsivity.

关键词： Ga_(2)O_(3) array photodetector MOCVD deep UV detection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Self-powered solar-blind photodiodes based on EFG-grown(100)-dominant β-Ga_(2)O_(3) substrate

引用

Chinese Physics B 2021年第1期30卷 483-486页

作者： Xu-Long Chu Zeng Liu Yu-Song Zhi Yuan-Yuan Liu Shao-Hui Zhang Chao Wu Ang Gao Pei-Gang Li dao-you guo Zhen-Ping Wu Wei-Hua Tang Laboratory of Information Functional Materials and Devices School of Science&State Key Laboratory of Information Photonics and Optical CommunicationsBeijing University of Posts and TelecommunicationsBeijing 100876China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China The Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China China Aerospace System Simulation Technology Co. Ltd.(Beijing)Beijing 100195China Division of Interdisciplinary and Comprehensive Research&Platform for Characterization and Test Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Center for Optoelectronics Materials and Devices&Key Laboratory of Optical Field Manipulation of Zhejiang Province Department of PhysicsZhejiang Sci-Tech UniversityHangzhou 310018China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China College of Electronic and Optical Engineering&College of Microelectronics Nanjing University of Posts and TelecommunicationsNanjing 210046China National and Local Joint Engineering Laboratory for RF Integration and Micro-Packing Technologies Nanjing University of Posts and TelecommunicationsNanjing 210046China

We report the edge-defined-film-fed(EFG)-grown β-Ga_(2)O_(3)-based Schottky *** device has a reverse leakage current of ~nA and a rectified ratio of ~10^(4) at ±5 *** addition,the photodiode detector shows a dark current of 0.3 pA,a photo-responsivity(R) of 2.875 mA/W,a special detectivity(D*) of 10^(10) Jones,and an external quantum efficiency(EQE) of 1.4% at zero bias,illustrating a self-powered *** work may advance the development of the Ga_(2)O_(3)-based Schottky diode solar-blind photodetectors.

关键词： β-Ga_(2)O_(3)substrate Schottky photodiode solar-blind detection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Melamine/Stearic Acid Composite Nanowires and Vesicles with an Intercalated Nanostructure Prepared through NCCM Method

引用

Chinese Journal of Chemical Physics 2012年第6期25卷 708-712,I0004页

作者： Juan guo dao-yong Chen The State Key Laboratory of Molecular Engineering of Polymers and Department of MacromolecularScience Fudan University Shanf hai 200433 China

A solvent-non-solvent method invented in our laboratory for preparing non-covalently con- nected micelles （NCCM） was used to intercalate melamine （MA） molecules into stearic acid （SA） bilayers to form tile composite nanoparticles with an intercalated nanostructure in which a melamine bilayer is sandwiched between two stearic acid bilayers, NCCM method helps to sufficiently mix the two components in nanospace and meanwhile inhibits the strong tendency of self-crystallization of MA, leading to the intercalation. Although the nanopar- ticles have a regular inner structure, the primary MA/SA nanoparticles have an irregular morphology. Regular nanoparticles were obtained through annealing the suspension of the primary nanoparticles. Through annealing at different temperatures, the MA/SA compos- ite nanowires and vesicles with an intercalated structure were prepared respectively. It is proposed that the morphological change results from the change in the intercalated structure.

关键词： Organic intercalation system Non-covalently connected micelles method Annealing treatment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The progress in the verification of key technologies for floating structures near islands and reefs

引用

Journal of Hydrodynamics 2021年第1期33卷 1-12页

作者： you-sheng Wu Jun Ding Xue-kang Gu Chun-yan Ji Xiong-bo Zheng guo-ping Zhou dao-lin Xu Li Ma China Ship Scientific Research Center Wuxi 214082China School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China College of Shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China Shanghai Merchant Ship Design and Research Institute Shanghai 201203China College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteQingdao 266000China

In 2019 a Scientific Research&Demonstration Platform was deployed near islands and reefs in South China Sea by a joint research group of 7 institutes and universities in *** is a simplified small model of a two-module semi-submersible-type *** test on site has continued for more than one and half years since then for long-term observations to validate the developed key technologies for design and behavior predictions of floating structures deployed near islands and *** integrated information system was set up to continuously collect and inspect the data of the encountered waves,structure responses,connector forces,mooring line forces,anti-corrosion status of the platform,the performance efficiencies of a floating breakwater nearby and a wave energy converter attached on the *** this paper,the status of the on-site measurements and validations of the key technologies are briefly described.

关键词： near islands and reefs inhomogeneous wave environment multi-module floating structures VLFS floating breakwater wave responses hydroelastic analysis predictions on-site measurements validation verification

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Exfoliation corrosion of extruded Mg-Li-Ca alloy

引用

Journal of Materials Science & Technology 2018年第9期34卷 1550-1557页

作者： Zi-you Ding Lan-Yue Cui Rong-Chang Zeng Yan-Bin Zhao Shao-Kang Guan dao-Kui Xu Cun-guo Lin College of Materials Science and Engineering Shandong University of Science and Technology Qingdao 266590 China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450002 China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Science and Technology on Marine Corrosion and Protection Laboratory Qingdao 266071 China Qingdao Branch of Luoyang Ship Material Research Institute Qingdao 266101 China

Exfoliation on as-extruded Mg-1 Li-1 Ca magnesium alloy was investigated after an immersion in 3.5 wt%NaCl aqueous solution for 90, 120 and 150 days through optical microscope, digital camera, scanning electron microscope, electrochemical workstation, scanning Kalvin probe, X-ray diffraction and Fourier transform infrared spectroscope. The results demonstrated that exfoliation corrosion occurred on extruded Mg-1 Li-1 Ca alloy due to elongated microstructure parallel to surface, and delamination of lamellar structure resulted from galvanic effect and wedge effect. Skin layer with fine grains exhibited better corrosion resistance, whereas the interior with coarse grains and the intermetallic compound,Mg2 Ca particles existing in a fibrous structure, dispersed along grain boundaries and extrusion direction in a line. Furthermore, galvanic effect between Mg2 Ca particles and their neighboring a-Mg matrix facilitated dissolution of Mg2 Ca particles and a-Mg matrix; wedge effect was caused by formation of corrosion products. Exfoliation corrosion of extruded Mg-Li-Ca alloys might be a synergic effect of pitting corrosion,filiform corrosion, intergranular corrosion and stress corrosion. Finally, exfoliation corrosion mechanism was proposed.

关键词： Magnesium-lithium alloy Exfoliation corrosion Intermetallic compound Extrusion Microstructure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Safety and efficacy of single-incision laparoscopic surgery for appendectomies: A meta-analysis

引用

World Journal of Gastroenterology 2013年第25期19卷 4072-4082页

作者： Ping Li Zong-Hui Chen Qing-guo Li Tang Qiao you-Yong Tian dao-Rong Wang Department of Gastrointestinal Surgery Subei People's Hospital of Jiangsu Province (the First Affiliated Hospital of Yangzhou University) Department of Neurology Nanjing First Hospital (the Third Affiliated Hospital of Nanjing Medical University)

AIM: To compare single incision laparoscopic surgery for an appendectomy (SILS-A) with conventional laparoscopic appendectomy (C-LA) when implemented by experienced surgeons. METHODS: Studies and relevant literature regarding the performance of single-incision laparoscopic surgery vs conventional laparoscopic surgery for appendectomy were searched for in the Cochrane Central Register of Controlled Clinical Trials, MEDLINE, EMBASE and World Health Organization international trial register. The operation time (OR time), complications, wound infection and postoperative day using SILS-A or C-LAwere pooled and compared using a meta-analysis. The risk ratios and mean differences were calculated with 95%CIs to evaluate the effect of SILS-A. RESULTS: Sixteen recent studies including 1624 patients were included in this meta-analysis. These studies demonstrated that, compared with C-LA, SILS-A has a similar OR time in adults but needs a longer OR time in children. SILS-A has similar complications, wound infection and length of the postoperative day in adults and children, and required similar doses of narcotics in children, the pooled mean different of -0.14 [95%CI: -2.73-(-2.45), P > 0.05], the pooled mean different of 11.47 (95%CI: 10.84-12.09, P 0.05), a pooled RR of 1.9 (95%CI: 0.92-3.91, P > 0.05), a pooled RR of 1.01 (95%CI: 0.51-2.0, P > 0.05) a pooled RR of 1.86 (95%CI: 0.77-4.48, P > 0.05), the pooled mean different of -0.25 (95%CI: -0.50-0, P = 0.05) the pooled mean different of -0.01 (95%CI: -0.05-0.04, P > 0.05) the pooled mean different of -0.13 (95%CI: -0.49-0.23, P > 0.05) respectively. CONCLUSION: SILS-A is a technically feasible and reliable approach with short-term results similar to those obtained with the C-LA procedure.

关键词： Single incision Laparoscopy Appendicitis Children Adult

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Floor heave characteristics and control technology of the roadway driven in deep inclined-strata

引用

International Journal of Mining Science and Technology 2015年第2期25卷 267-273页

作者： Wang Meng guo Guanlong Wang Xiangyu guo Yu dao Vietdoan State Key Laboratory of Coal Resources and Safety Mining School of MinesChina University of Mining & Technology Hanoi University of Mining and Geology

Based on in-mine instrumentation and theoretical analysis of the unsymmetrical large-deformation that occurred in the roadway after excavation,Differential Floor Heave(DFH)was found to be the main reason for roadway *** needs to be pointed out that the specific roadway was driven in inclined rock *** addition,the factors that contribute to the occurrence of DFH are discussed in *** is believed that DFH is triggered by the unsymmetrical stress distribution in the floor and the different rock types encountered near the two floor ***,DFH control should be focused on the left floor corner where shearing failure occurs initially and the left floor surface where tensile failure is more *** proposed DFH control strategies include unsymmetrical grouting for the whole roadway,re-design of the roof and ribs support,reinforcement of the weak zones,and release of the concentrated stress in the earlier ***,it is recommended that in the later stage,both bolts and cable bolts with higher strength and the backfilling technique using the coal measure rocks and concrete should be employed in the reversed-arch *** field instrumentation results,after using the proposed control strategies,indicate that large deformation in a DFH roadway has been successfully controlled.

关键词： Deep roadway Inclined strata Differential Floor Heave (DFH)Unsymmetrical deformation Two stage control strategies

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tensile force correction calculation method for prestressed construction of tension structures

引用

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第9期9卷 1201-1207页

作者： Xin ZHUO guo-fa ZHANG Koichiro ISHIKAWA dao-an LOU Department of Civtl Engmeermg Zhejiang University Hangzhou 310027 China Department of Architecture and Civil Engineering Fukui University Fukui 910-8507 Japan Zhejiang Zhancheng Construction Group Co. Ltd. Hangzhou 310005 China

Factors such as errors during the fabrication or construction of structural components and errors of calculation as- sumption or calculation methods, are very likely to cause serious deviation of many strings’ actual prestressing forces from the designed values during tension structure construction or service period, and further to threaten the safety and reliability of the structure. Aiming at relatively large errors of the prestressing force of strings in a tension structure construction or service period, this paper proposes a new finite element method (FEM), the "tensile force correction calculation method". Based on the measured prestressing forces of the strings, this new method applies the structure from the zero prestressing force status approach to the measured prestressing force status for the first phase, and from the measured prestressing force status approach to the designed prestressing force status for the second phase. The construction tensile force correction value for each string can be obtained by multi-iteration with FEM. Using the results of calculation, the strings’ tensile force correction by group and in batch will be methodic, simple and accurate. This new calculation method can be applied to the prestressed correction construction simulation analysis for tension structures.

关键词： Tension structures Prestressed construction High precision

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genome-wide identification of target genes for transcription factor BR-C in the silkworm,Bombyx mori

引用

Insect Science 2021年第6期28卷 1530-1540页

作者： Meng-Pei guo Wen-Liang Qian Xue-Chuan He Jian Peng Peng Wang Wei-Na Wang Qing-you Xia dao-Jun Cheng State Key Laboratory of Silkworm Genome Biology Biological Science Research CenterSouthwest UniversityChongqing400715China Chongqing Key Laboratory of Sericultural Science Southwest UniversityChongqing400715China

Transcription factor Broad Complex(BR-C)is an ecdysone primary response gene in insects and participates in the regulation of insect growth and *** this study,we performed a genome-wide identification of BR-C target genes in silkworm(Bombyx mori)using chromatin immunoprecipitation followed by high-throughput sequencing(ChIP-seq).As a result,a total of 1006 BR-C ChIP peaks were identified,and 15%of peaks were located in the promoter regions of 133 protein-coding *** annotation revealed that these ChIP peak-associated genes,as potential BR-C targets,were enriched in pathways related to biosynthetic process,metabolic process,and *** analysis and quantitative real-time polymerase chain reaction(PCR)examination revealed that developmental changes in expression patterns of a portion of potential BR-C targets,including HR96 and GC-otl,were similar to those of ***-PCR examination confirmed that BR-C could directly bind to the promoters of potential ***,dual luciferase assays demonstrated that HR96 promoter activity was significantly upregulated following BR-C overexpression,and this upregu-lation was abolished when the binding motif in the promoter was *** study will be helpful for deciphering the regulatory roles of BR-C during insect growth and development.

关键词： BR-C ChIP-seq direct binding silkworm target genes transcriptional regulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：