检索结果-南通市图书馆

维普期刊数据库

番茄BURP结构域基因家族全基因组鉴定及表达分析

在线全文

学校读者我要写书评

暂无评论

中国农业科技导报 2024年第8期26卷 51-62页

作者：张福林奚瑞刘宇翔陈兆龙余庆辉李宁新疆农业科学院园艺作物研究所新疆特色果蔬基因组研究与遗传改良重点实验室乌鲁木齐830091 新疆农业大学园艺学院乌鲁木齐830052

BURP结构域蛋白为植物所特有,在植物生长发育和胁迫响应中起着重要作用。为鉴定番茄BURP结构域基因(SlBURP)及分析其表达,从番茄基因组中鉴定出12个SlBURP基因,系统进化分析将其分为7个亚族,不同亚族的保守基序和基因结构有明显差异。Sl... 详细信息

BURP结构域蛋白为植物所特有,在植物生长发育和胁迫响应中起着重要作用。为鉴定番茄BURP结构域基因(SlBURP)及分析其表达,从番茄基因组中鉴定出12个SlBURP基因,系统进化分析将其分为7个亚族,不同亚族的保守基序和基因结构有明显差异。SlBURPs启动子序列中广泛存在胁迫、生长、激素、光响应元件,表明该家族基因在对非生物胁迫的响应中有重要作用。共线性分析表明,番茄SlBURP基因和拟南芥BURP基因家族成员来自同一祖先。RT-qPCR表明,SlBURP6、SlBURP7、SlBURP8、SlBURP12在叶中大量表达;SlBURP2、SlBURP6、SlBURP7、SlBURP8在盐处理后转录水平上升;在植物调节剂处理下SlBURP5、SlBURP8、SlBURP9、SlBURP12基因在果实发育期的转录水平均有上升。综上所述,SlBURP基因在番茄生长发育和逆境胁迫中起着重要作用。

关键词：番茄 BURP基因家族果实发育盐胁迫表达分析

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

高压电缆工井远距离护层环流检测装置的研制

电工材料 2024年第4期 87-89页

作者：林添进邹振平张秀清陈亮陈肇隆国网福建省电力有限公司泉州供电公司福建泉州362000

本研究研制了一种高压电缆工井远距离护层环流检测装置,通过合理设计,极大减少了作业所需的准备工作量,大幅度减少作业人员在测量护层环流的作业时间,降低作业过程中的风险,提高了电网运行的可靠性,具有显著的社会效益。

关键词：输电线路高压电缆环流检测

维普期刊数据库博看期刊

CO_(2)-promoted transfer-free growth of conformal graphene

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 6334-6342页

作者： Ruojuan Liu Zhe Peng Xiaoli Sun zhaolong chen Zhi Li Haina Ci Bingzhi Liu Yi cheng Bei Jiang Junxiong Hu Wanjian Yin Jingyu Sun Zhongfan Liu Center for Nanochemistry Beijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Beijing Graphene Institute Beijing 100095China Beijing Cancer Hospital Beijing 100142China Department of Materials Science and Engineering National University of Singapore117575Singapore College of Energy Soochow Institute for Energy and Materials InnovationsSUDA-BGI Collaborative Innovation CenterSoochow UniversitySuzhou 215006China

Gaseous promotors have readily been adopted during the direct synthesis of graphene over insulators to enhance the growth quality and/or boost the growth *** understanding of the real functions of carbon-containing promotors has still remained *** this study,we identify the critical roles of a representative CO_(2)promotor played in the direct growth of *** comparative experimental trials validate CO_(2)as an effective modulator to decrease graphene nucleation density,improve growth kinetics,mitigate adlayer *** first-principles calculations illustrate that the generation of gas-phase OH species in CO_(2)-assisted system helps decrease the energy barriers of CH4 decomposition and carbon attachment to the growth front,which might be the key factor to allow high-quality direct *** a CO_(2)-promoted strategy enables the conformal coating of graphene film over curved insulators,where the sheet resistance of grown graphene on quartz reaches as low as 1.26 kΩ·sq^(−1)at an optical transmittance of~95.8%.The fabricated endoscope lens based on our conformal graphene harvests an apoptosis of 82.8%for noninvasive thermal *** work presented here is expected to motivate further investigations in the controllable growth of high-quality graphene on insulating substrates.

关键词： chemical vapor deposition graphene carbon dioxide transfer-free growth promotor conformal

Graphene-driving strain engineering to enable strain-free epitaxy of AlN film for deep ultraviolet light-emitting diode

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2022年第5期11卷 808-819页

作者： Hongliang Chang Zhetong Liu Shenyuan Yang Yaqi Gao Jingyuan Shan Bingyao Liu Jingyu Sun zhaolong chen Jianchang Yan Zhiqiang Liu Junxi Wang Peng Gao Jinmin Li Zhongfan Liu Tongbo Wei Research and Development Center for Semiconductor Lighting Technology Institute of SemiconductorsChinese Academy of Sciences100083 BeijingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences100049 BeijingChina Center for Nanochemistry(CNC) Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking University100871 BeijingChina Electron Microscopy Laboratory and International Center for Quantum MaterialsSchool of PhysicsPeking University100871 BeijingChina Beijing graphene institute(BGI) 100095 BeijingChina Academy for Advanced Interdisciplinary Studies Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced MaterialsPeking University100871 BeijingChina State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences100083 BeijingChina

The energy-efficient deep ultraviolet(DUV)optoelectronic devices suffer from critical issues associated with the poor quality and large strain of nitride material system caused by the inherent mismatch of *** this work,we have prepared the strain-free AlN film with low dislocation density(DD)by graphene(Gr)-driving strain-pre-store engineering and a unique mechanism of strain-relaxation in quasi-van der Waals(QvdW)epitaxy is *** DD in AlN epilayer with Gr exhibits an anomalous sawtooth-like evolution during the whole epitaxy *** can help to enable the annihilation of the dislocations originated from the interface between AlN and Gr/sapphire by impelling a lateral two-dimensional growth ***,it can induce AlN epilayer to pre-store sufficient tensile strain during the early growth stage and thus compensate the compressive strain caused by ***,the low-strain state of the DUV light-emitting diode(DUV-LED)epitaxial structure is realized on the strain-free AlN template with ***,the DUV-LED with Gr demonstrate 2.1 times enhancement of light output power and a better stability of luminous wavelength compared to that on bare *** in-depth understanding of this work reveals diverse beneficial impacts of Gr on nitride growth and provides a novel strategy of relaxing the vital requirements of hetero-mismatch in conventional heteroepitaxy.

关键词： sapphire diode strain

6-inch uniform vertically-oriented graphene on soda-lime glass for photothermal applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2018年第6期11卷 3106-3115页

作者： Haina Ci Huaying Ren Yue Qi Xudong chen zhaolong chen Jincan Zhang Yanfeng Zhang Zhongfan Liu Center for Nanochemistry (CNC) Beijing Science and Engineering Center for Nanocarbons College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Academy forAdvanced Interdisciplinary Studies Peking University Beijing 100871 China Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China

Vertically-oriented graphene （VG） has many advantages over flat lying graphene, including a large surface area, exposed sharp edges, and non-stacking three-dimensional geometry. Recently, VG nanosheets assembled on specific substrates have been used for applications in supersensitive gas sensors and high-performance energy storage devices. However, to realize these intriguing applications, the direct growth of high-quality VG on a functional substrate is highly desired. Herein, we report the direct synthesis of VG nanosheets on traditional soda-lime glass due to its low-cost, good transparency, and compatibility with many applications encountered in daily life. This synthesis was achieved by a direct-current plasma enhanced chemical vapor deposition （dc-PECVD） route at 580℃, which is right below the softening point of the glass, and featured a scale-up size - 6 inches. Particularly, the fabricated VG nanosheets/glass hybrid materials at a transmittance range of 97%-34% exhibited excellent solarthermal performances, reflected by a 70%-130% increase in the surface temperature under simulated sunlight irradiation. We believe that this graphene glass hybrid material has great potential for use in future transparent ＂green-warmth＂ construction materials.

关键词： vertically oriented graphene (VG) soda-lime glass photothermal application antireflective material

Stretchable,Transparent,and Ultra-Broadband Terahertz Shielding Thin Films Based on Wrinkled MXene Architectures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第9期16卷 110-122页

作者： Shaodian Yang Zhiqiang Lin Ximiao Wang Junhua Huang Rongliang Yang Zibo chen Yi Jia Zhiping Zeng zhaolong Cao Hongjia Zhu Yougen Hu Enen Li Huanjun chen Tianwu Wang Shaozhi Deng Xuchun Gui State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China National Key Laboratory of Materials for Integrated Circuits Shenzhen Institute of Advanced Electronic MaterialsShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Guangdong Province Key Laboratory of Display Material and Technology Guangzhou 510275People’s Republic of China China Academy of Aerospace Science and Innovation Beijing 100176People’s Republic of China School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275People’s Republic of China GBA Branch of Aerospace Information Research Institute Chinese Academy of SciencesGuangzhou 510700People’s Republic of China School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijing 100049People’s Republic of China Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics Guangzhou 510700People’s Republic of China

With the increasing demand for terahertz(THz)technology in security inspection,medical imaging,and flexible electronics,there is a significant need for stretchable and transparent THz electromagnetic interference(EMI)shielding *** EMI shielding materials,like opaque metals and carbon-based films,face challenges in achieving both high transparency and high shielding efficiency(SE).Here,a wrinkled structure strategy was proposed to construct ultra-thin,stretchable,and transparent terahertz shielding MXene films,which possesses both isotropous wrinkles(height about 50 nm)and periodic wrinkles(height about 500 nm).Compared to flat film,the wrinkled MXene film(8 nm)demonstrates a remarkable 36.5%increase in SE within the THz *** wrinkled MXene film exhibits an EMI SE of 21.1 dB at the thickness of 100 nm,and an average EMI SE/t of 700 dBμm^(−1)over the 0.1-10 *** calculations suggest that the wrinkled structure enhances the film’s conductivity and surface plasmon resonances,resulting in an improved THz wave ***,the wrinkled structure enhances the MXene films’stretchability and *** bending and stretching(at 30%strain)cycles,the average THz transmittance of the wrinkled film is only 0.5%and 2.4%,*** outstanding performances of the wrinkled MXene film make it a promising THz electromagnetic shielding materials for future smart windows and wearable electronics.

关键词： Terahertz Wrinkle structure Electromagnetic interference shielding MXene

维普期刊数据库

Bioinspired synthesis of CVD graphene flakes and graphene-supported molybdenum sulfide catalysts for hydrogen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Nano Research 2016年第1期9卷 249-259页

作者： Ke chen Cong Li zhaolong chen Liurong Shi Sathish Reddy Huan Meng Qingqing Ji Yanfeng Zhang Zhongfan Liu Center for Nanochemistry (CNC) Beijing Science and Engineering Center for Low Dimensional Carbon Materials Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China Key Laboratory for Special Functional Materials of Ministry of Education Henan University Kaifeng 475004 China Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China

Chemical vapor deposition has been the most-promising approach for growing large-area high-quality graphene films on planar substrates. Beyond the lateral growth, the synthesis of three-dimensional （3D） graphene has also been demon- strated recently on metal foams and insulating nanoparticles for exploring their applications in electrochemical electrodes. However, the existing approaches need either to prefabricate abundant starting substrates, or to construct porous frameworks for graphene growth. Herein, we report a straightforward, bioinspired strategy for growing large-quantity graphene flakes on cuttlebone substrates using the chemical vapor deposition （CVD） method. The separated graphene flakes from growth substrates are highly crystalline and layer-thickness controllable, outperforming the traditional chemically exfoliated graphene with few surface groups. Due to their inheriting the biomineral-derived morphology, the 3D graphene microstructures show a highly exposed and curved surface, which can load more MoSx（x ≥ 2） catalysts than other planar supports for highly efficient hydrogen generation. Briefly, the bioinspired approach is expected to achieve a reasonable balance between quality and quantity for graphene production, thus propelling its wide applications in energy storage and conversion devices.

关键词： graphene bioinspired synthesis chemical vapor deposition three-dimensional hydrogen evolutionreaction

Two-dimensional material-assisted remote epitaxy and van der Waals epitaxy: a review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Open 2023年第4期2卷 86-102页

作者： Zhetong Liu Bingyao Liu zhaolong chen Shenyuan Yang Zhiqiang Liu Tongbo Wei Peng Gao Zhongfan Liu Electron Microscopy Laboratory and International Center for Quantum MaterialsSchool of PhysicsPeking UniversityBeijing 100871China Beijing Graphene Institute(BGI) Beijing 100095China Academy for Advanced Interdisciplinary Studies Peking UniversityBeijing 100871China Center for Nanochemistry(CNC) Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Institute for Functional Intelligent Materials National University of SingaporeSingapore 117575Singapore State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Research and Development Center for Semiconductor Lighting Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Collaborative Innovation Center of Quantum Matter Beijing 100871China

Heteroepitaxy can reduce the cost and widen the application range of semiconductor film synthesis and device ***,the lattice and thermal expansion coefficient mismatches between epilayers and substrates limit the improvement of crystal quality and device ***-dimensional(2D)material-assisted heteroepitaxy offers an effective solution to these *** weak interaction at the interface between films and substrates facilitates the subsequent exfoliation and transfer of epilayer for the fabrication of flexible or high-power ***,we summarize the modes of 2D material-assisted epitaxy,which can be classified into remote epitaxy,pinhole epitaxy and van der Waals epitaxy based on the interfacial interaction between the epilayers and ***,we discuss in detail the improved crystal quality and functional applications,such as flexible devices,wavelength-modulated optoelectronic devices,and thermal management in high-power ***,we highlight the challenges and prospects of 2D material-assisted epitaxy,providing roadmaps for lateral research and semiconductor production.

关键词： graphene 2D materials heteroepitaxy remote epitaxy pinhole epitaxy van der Waals epitaxy

维普期刊数据库

Growth of 12-inch uniform monolayer graphene film on molten glass and its application in PbI2-based photodetector

在线全文

学校读者我要写书评

暂无评论

Nano Research 2019年第8期12卷 1888-1893页

作者： zhaolong chen Haina Ci Zhenjun Tan Zhipeng Dou Xu-dong chen Bingzhi Liu Ruojuan Liu Li Lin Lingzhi Cui Peng Gao Hailin Peng Yanfeng Zhang Zhongfan Liu Center for Nanochemistry (CNC) Beijing Science and Engineering Center for NanocarbonsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Beijing National Laboratory for Molecular Sciences Beijing 100871China Electron Microscopy Laboratory School of PhysicsPeking UniversityBeijing 100871China Beijing Graphene Insititue (BGI) Beijing 100095China Department of Materials Science and Engineering College of Engineering Peking UniversityBeijing 100871China

Direct growth of large area uniform graphene on functional insulating materials is essential for engineering versatile applications of graphene. However, the existing synthesis approaches can hardly avoid the generation of non-uniform multilayer graphene along the gas flow direction, affording huge challenges for further scaling up. Herein, by exploiting the molten state of soda-lime glass, we have accomplished the direct growth of large area uniform (up to 30 cm × 6 cm) graphene via a facile chemical vapor deposition route on low cost soda-lime glass. The use of molten glass eliminates the chemically active sites (surface corrugations, scratches, defects), and improves the mobility of carbon precursors, affording uniform nucleation and growth of monolayer graphene. Intriguingly, thus-obtained graphene acts as an ideal coating layer for the surface crystallographic modification of soda-lime glass, making it epitaxy substrates for synthesizing high-quality PbI2 nanoplates and continues films. Accordingly, a prototype photodetector was fabricated to present excellent photoelectrical properties of high responsivity (~ 600 on/off current ratio) and fast response speed (18 μs). This work hereby paves ways for the batch production and the direct applications of graphene glass as platforms for constructing high performance electronic and optoelectronic devices.

关键词： graphene chemical vapor deposition dielectric substrate lead iodide photodetector