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High-Efficiency Photo-Induced Charge Transfer for SERS Sensing in N-Doped 3D-Graphene on Si Heterojunction

Energy & Environmental Materials 2024年第2期7卷 268-276页

作者： Guanglin Zhang Jie Sun Genwang Wei Shan Zhang Zhengyi He Huijuan Wu Bingkun Wang Siwei Yang Guqiao Ding zhiduo liu Zhiwen Jin Caichao Ye Gang Wang Department of Microelectronic Science and Engineering School of Physical Science and TechnologyNingbo UniversityNingbo 315211China Department of Biochemistry and Molecular Biology School of Basic Medical SciencesShenzhen UniversityShenzhen 518071China Academy for Advanced Interdisciplinary Studies&Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Computational Science and Material DesignSouthern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Physical Science and Technology&Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou UniversityLanzhou 730000China

Nitrogen-doped three-dimensional graphene(N-doped 3D-graphene)is a graphene derivative with excellent adsorption capacity,large specific surface area,high porosity,and optoelectronic ***,N-doped 3D-graphene/Si heterojunctions were grown in situ directly on silicon(Si)substrates via plasma-assisted chemical vapor deposition(PACVD),which is promising for surface-enhanced Raman scattering(SERS)substrates *** analyses of theoretical simulation,incorporating N atoms in 3D-graphene are beneficial to increase the electronic state density of the system and enhance the charge transfer between the substrate and the target *** enhancement of the optical and electric fields benefits from the stronger light-matter interaction improved by the natural nano-resonator structure of N-doped *** as-prepared SERS substrates based on N-doped 3D-graphene/Si heterojunctions achieve ultra-low detection for various molecules:10^(-8)M for methylene blue(MB)and 10^(-9)M for crystal violet(CRV)with rhodamine(R6G)of 10^(10)*** practical detected,10^(-8)M thiram was precisely detected in apple peel *** results indicate that N-doped 3D-graphene/Si heterojunctions based-SERS substrates have promising applications in low-concentration molecular detection and food safety.

关键词： charge transfer DFT simulation N-doped 3D-graphene SERS Thiram detection

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A Spiral Graphene Framework Containing Highly Ordered Graphene Microtubes for Polymer Composites with Superior Through-Plane Thermal Conductivity

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Chinese Journal of Chemistry 2022年第3期40卷 329-336页

作者： Jinrui Gong Xue Tan Qilong Yuan zhiduo liu Junfeng Ying Le Lv Qingwei Yan Wubo Chu Chen Xue Jinhong Yu Kazuhito Nishimura Nan Jiang Cheng-Te Lin Wen Dai Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and Engineering(NIMTE)Chinese Academy of SciencesNingboZhejiang 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBejjing 100049China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)Beijing Key Lab of Nonophotonics&Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China College of Materials Science and Engineering Hunan UniversityChangshaHunan 410082China Advanced Nano-processing Engineering Lob Mechanical Systems EngineeringKogakuin UniversityTokyo 192-0015Japan

As the power density of electronic devices increases,there has been an urgent demand to develop highly conductive polymer composites to address the accompanying thermal management *** to the ultra-high intrinsic thermal conductivity,graphene is considered a very promising filler to improve the thermal conductivity of ***,graphene-based polymer composites prepared by the conventional mixing method generally have limited thermal conductivity,even under high graphene loading,due to the failure to construct efficient heat transfer pathways in the polymer ***,a spiral graphene framework(SGF)containing continuous and highly ordered graphene microtubes was developed based on a modified CVD *** embedding into the epoxy(EP)matrix,the graphene microtubes can act as efficient heat pathways,endowing the SGF/EP composites with a high through-plane thermal conductivity of 1.35 W·m^(-1)·K^(-1) at an ultralow graphene loading of 0.86 wt%.This result gives a thermal conductivity enhancement per 1 wt%filler loading of 710%,significantly outperforming various graphene structures as *** addition,we demonstrated the practical application of the SGF/EP composite as a thermal interface material for efficient thermal man-agement of the light-emitting diode(LED).

关键词： Graphene Chemical vapor deposition Polymer Thermal conductivity Thermal management material

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Enhanced thermal conductivity of epoxy composites with core-shell SiC@SiO_(2) nanowires

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High Voltage 2017年第3期2卷 154-160页

作者： Dianyu Shen Mengjie Wang Yuming Wu zhiduo liu Yong Cao Ting Wang Xinfeng Wu Qingtang Shi Kuan W.A.Chee Wen Dai Hua Bai Dan Dai Jilei Lyu Nan Jiang Cheng-Te Lin Jinhong Yu Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201People's Republic of China College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai 201306People's Republic of China Department of Electrical and Electronic Engineering University of NottinghamNingbo 315100People's Republic of China

Electronic packaging materials and thermal interface materials(TIMs)are widely used in thermal *** this study,the epoxy composites with core-shell structure SiC@SiO_(2) nanowires(SiC@SiO_(2) NWs)as fillers could effectively enhance the thermal conductivity of epoxy *** unique structure of fillers results in a high thermal conductivity of epoxy composites,which is attributed to good interfacial compatibility epoxy matrix and bridging connections of SiC@SiO_(2) *** neat epoxy to 2.5 wt%loading of SiC@SiO_(2) NWs,the thermal conductivity is significantly increased from 0.218 to 0.391 W m^(−1) K^(−1),increased by 79.4%.In addition,the composite with 2.5 wt%filler possess lower coefficient of thermal expansion and better thermal stability than that of neat *** these outstanding properties imply that epoxy/SiC@SiO_(2) NWs composites could be the ideal candidate for TIM.

关键词： composites nanowires composite

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Differential Expression of Neutrophilic Granule Proteins between Th1 and Th2 Cells

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Acta Biochimica et Biophysica Sinica 2007年第1期39卷 67-72页

作者： De'e XIE~(1,2#) zhiduo liu~(1#) Zhenhu LI~1 Yongyong JI~1 Jiwu CHEN~2 and Bing SUN~(1*) ~1Institute of Biochemistry and Cell Biology,Shanghai Institutes for Biological Sciences,Shanghai 200031,China ~2School of Life Science,East East China Normal University,Shanghai 200062,China Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological SciencesShanghai 200031 China School of Life Science East China Normal UniversityShanghai 200062 China

Thelper cell type 1 （Thl） and 2 （Th2） play central roles in immune *** identify thenovel genes differentially expressed between Th 1 and Th2 cells,CD4+T cells were isolated from DO 11.10transgenic mice and induced under Thl or Th2 *** showed differential expression ofneutrophilic granule proteins （NGP） between Thl and Th2 *** was first identified as a myeloid-specific granule protein with homology to the cystatin *** we confirmed greater expressionof NGP in Th2 cells by reverse transcription-polymerase chain reaction and real-time polymerase chainreaction *** also showed that the expression of NGP mRNA had a peak expression after 5 d cultureunder Th2- but not Thl-biasing conditions. Antibody against NGP was prepared,and in concert with theresults of mRNA analysis,the level of NGP protein in Th2 cells detected by Western blot analysis was alsohigher than that in Th1 ***-NGP fusion proteins overexpressed in HeLa cells were localized to *** results suggest NGP is a novel marker distinguishing Th2 from Th1 cells and maybe anovel cytokine secreted by Th2 cells.

关键词： neutrophilic granule protein cystatin Th2 cell

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Distributed implantation of a flexible microelectrode array for neural recording

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Microsystems & Nanoengineering 2022年第3期8卷 177-184页

作者： Chunrong Wei Yang Wang Weihua Pei Xinyong Han Longnian Lin zhiduo liu Gege Ming Ruru Chen Pingping Wu Xiaowei Yang Li Zheng Yijun Wang State Key Laboratory of Integrated Optoelectronics Institute ofSemiconductorsChinese Academy of Sciences100083 BeijingChina University of Chinese Academy of Sciences 100049 BeijingChina School of Future Technologies University of Chinese Academy of Sciences100049 BeijingChina School of Microelectronics University of Sciences and Technology of China230000 HefeiChina Institute of Automation ChineseAcademy of Sciences100190 BeijingChina Key Laboratory of Brain Functional Genomics East China Normal University200062 ShanghaiChina Brain Machine Fusion Itelligence Institute 215131 SuzhouChina Technical Institute of Physids and Chemistry Chinese Academy of Sciences100190 BeijingChina Chinese Institute for Brain Research 102206 BeijingChina

Flexible multichannel electrode arrays(fMEAs)with multiple flaments can be flexibly implanted in various *** is necessary to develop a method for implanting the fMEA in different locations and at various depths based on the recording *** study proposed a strategy for reducing the microelectrode volume with integrated *** implantation system was developed specifically for semiautomatic distributed *** feasibility and convenience of the fMEA and implantation platform were verified in *** acute and chronic recording results provied the effectiveness of the packaging and implantation *** methods could provide a novel strategy for developing fMEAs with more flaments and recording sites to measure functional interactions across multiple brain regions.

关键词： implantation recording microelectrode

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两种不同热处理工艺下亚稳β钛合金Ti-6Mo-5V-3Al-2Fe-2Zr的低周疲劳行为

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稀有金属材料与工程 2023年第2期52卷 658-666页

作者：刘知多张浩宇周舸程军张兴君陈立佳沈阳工业大学辽宁沈阳110870 西北有色金属研究院陕西西安710016 辽宁北方精密设备有限公司沈阳分公司辽宁沈阳110000

研究了固溶+等温时效及固溶+随炉冷却2种不同热处理工艺下Ti-6Mo-5V-3Al-2Fe-2Zr(质量分数,%)合金的低周疲劳行为。结果显示:固溶+等温时效处理后的M1合金显微组织中含有短棒状的晶内α相以及连续晶界α相;固溶+随炉冷却处理后得到的M2... 详细信息

研究了固溶+等温时效及固溶+随炉冷却2种不同热处理工艺下Ti-6Mo-5V-3Al-2Fe-2Zr(质量分数,%)合金的低周疲劳行为。结果显示:固溶+等温时效处理后的M1合金显微组织中含有短棒状的晶内α相以及连续晶界α相;固溶+随炉冷却处理后得到的M2合金显微组织中含有细长针状的晶内α相、连续晶界α相以及WGBα相。在0.6%、0.7%和0.8%的较低应变幅下M1合金和M2合金均呈现出循环稳定的现象,晶内α相间距较小的M2合金呈现出较高的应力幅值;在1.0%的较高应变幅下,由于背应力和摩擦应力的竞争机制,导致M1合金和M2合金均呈现循环软化现象。在0.9%和1.0%的较高应变幅下M2合金的背应力硬化速率相对较小,其循环软化现象更加明显,其应力幅值相对较低。M2合金的晶内α相将基体分割为若干“封闭单元”且β晶界处形成了向晶内平行生长的WGBα相,导致其低周疲劳寿命均低于M1合金。

关键词：亚稳β钛合金随炉冷却低周疲劳行为摩擦应力背应力

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热处理对Ti-6Mo-5V-3Al-2Fe-2Zr合金拉伸性能的影响

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材料研究学报 2022年第12期36卷 919-925页

作者：刘知多张浩宇程军周舸张兴君陈立佳沈阳工业大学材料科学与工程学院沈阳110870 西北有色金属研究院陕西省医用金属材料重点实验室西安710016 辽宁北方精密设备有限公司沈阳分公司沈阳110020

研究了固溶+单级时效处理、固溶+双级时效处理、固溶+随炉冷却处理对新型亚稳β钛合金Ti-6Mo-5V-3Al-2Fe-2Zr的显微组织和拉伸性能的影响。结果表明:与固溶+单级时效处理相比,固溶+双级时效处理析出的晶内次生α相间距减小和体积分数增... 详细信息

研究了固溶+单级时效处理、固溶+双级时效处理、固溶+随炉冷却处理对新型亚稳β钛合金Ti-6Mo-5V-3Al-2Fe-2Zr的显微组织和拉伸性能的影响。结果表明:与固溶+单级时效处理相比,固溶+双级时效处理析出的晶内次生α相间距减小和体积分数增大而使合金的强度提高。两种热处理都使合金中生成连续的晶界α相,导致合金的塑性降低;与上述两种热处理相比,固溶+随炉冷却处理使合金中析出的晶内次生α相的间距明显减小且沿晶界生成向晶内生长的α_(wgb)相,使合金的强度和塑性显著提高,其抗拉强度达到1421 MPa,断后伸长率为7.7%;与次生α相的体积分数相比,其间距是影响合金强度的主要因素。随着次生α相间距的减小,合金的强度提高。

关键词：金属材料亚稳β钛合金随炉冷却次生α相拉伸性能

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ECM1 controls Th2 cell egress from lymph nodes through re-expression of S1P1

ECM1 controls Th2 cell egress from lymph nodes through re-ex...

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2012年中国科协海峡两岸青年科学家学术活动月——第九届海峡两岸细胞生物学学术研讨会

作者： Zhenhu Li Yuan Zhang zhiduo liu Xiaodong Wu Yuhan Zheng Zhiyun Tao Kairui Mao Jie Wang Guomei Lin Lin Tian Yongyong Ji Meiling Qin Shuhui Sun Xueliang Zhu 孙兵 Shanghai Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological SciencesChinese Academy of Sciences

Th2 cells are differentiated from naive CD4+helper T cells,which have a crucial role in adaptive immune *** are critically involved in inflammatory diseases such as allergies and *** of Th2 cells into inflammatory tissues requires sphingosine-1-phosphate(S1P)interaction with the S1P receptor *** T cell trafficking is crucial for immunological responses,the mechanisms controlling specific

关键词： ECM1 regulate allergies asthma

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Imaging Immunity: Creating a Quantitative Spatiotemporal Understanding of Host Defense

Imaging Immunity: Creating a Quantitative Spatiotemporal Und...

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第十届全国免疫学学术大会

作者： Germain,Ronald N. Laemmermann,Tim Torabi-Parizi,Parizad Honda,Tetsuya Egen,Jackson G. liu,zhiduo Rudensky,A.Y. Levine,A.G. Li,Weizhe Gerner,Michael Y. Laboratory of Systems Biology NIAIDNIH Critical Care Medicine Dept. NIH Kyoto University Hospital Amgen Inc. South San Francisco Howard Hughes Medical Institute Memorial Sloan-Kettering Cancer Center Immunology Program Memorial Sloan-Kettering Cancer Center

Immune responses involve cell-cell interactions within lymphoid tissues,trafficking of activated cells to sites of effector function,and the migration of effector cells within peripheral *** gain a more detailed appre...

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沥青混凝土桥面铺装初期病害及防范措施的探讨

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辽宁省交通高等专科学校学报 2009年第1期11卷 17-19页

作者：刘志铎刘志博刘志硕新民市公路管理处辽宁沈阳110300

本文阐述沥青混凝土桥面铺装作用及性能要求,在对其初期病害发生原因分析的基础上,提出了一些避免和减少沥青桥面铺装早期病害的观点和看法,以便与大家共同探索或找出问题的解决方法。

关键词：沥青混凝土桥面铺装初期病害桥面防水

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