检索结果-南通市图书馆

Flexible, Transparent and Conductive Metal Mesh Films with Ultra‑High FoM for Stretchable Heating and Electromagnetic Interference Shielding

引用

Nano-Micro Letters 2024年第5期16卷 201-213页

作者： Zibo Chen Shaodian Yang Junhua Huang Yifan Gu Weibo Huang Shaoyong Liu zhiqiang lin Zhiping Zeng Yougen Hu Zimin Chen Boru Yang Xuchun Gui State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packing Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongPeople’s Republic of China School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275People’s Republic of China

Despite the growing demand for transparent conductive films in smart and wearable electronics for electromagnetic interference(EMI)shielding,achieving a flexible EMI shielding film,while maintaining a high transmittance remains a significant challenge.Herein,a flexible,transparent,and conductive copper(Cu)metal mesh film for EMI shielding is fabricated by self-forming crackle template method and electroplating technique.The Cu mesh film shows an ultra-low sheet resistance(0.18Ω□^(-1)),high transmittance(85.8%@550 nm),and ultra-high figure of merit(>13,000).It also has satisfactory stretchability and mechanical stability,with a resistance increases of only 1.3%after 1,000 bending cycles.As a stretchable heater(ε>30%),the saturation temperature of the film can reach over 110°C within 60 s at 1.00 V applied voltage.Moreover,the metal mesh film exhibits outstanding average EMI shielding effectiveness of 40.4 dB in the X-band at the thickness of 2.5μm.As a demonstration,it is used as a transparent window for shielding the wireless communication electromagnetic waves.Therefore,the flexible and transparent conductive Cu mesh film proposed in this work provides a promising candidate for the next-generation EMI shielding applications.

关键词： Metal mesh Transparent conductive film Stretchable heater Electromagnetic interference shielding

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

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

引用

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 materials.Existing 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 band.The 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 THz.Theoretical calculations suggest that the wrinkled structure enhances the film’s conductivity and surface plasmon resonances,resulting in an improved THz wave absorption.Additionally,the wrinkled structure enhances the MXene films’stretchability and stability.After bending and stretching(at 30%strain)cycles,the average THz transmittance of the wrinkled film is only 0.5%and 2.4%,respectively.The 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

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

Refined Evaluation of Satellite Precipitation Products against Rain Gauge Observations along the Sichuan–Tibet Railway

引用

Journal of Meteorological Research 2022年第5期36卷 779-797页

作者： zhiqiang lin Xiuping YAO Jun DU Zhenbo ZHOU Plateau Atmosphere and Environment Key Laboratory of Sichuan Province School of Atmospheric SciencesChengdu University of Information TechnologyChengdu 610225 China Meteorological Administration Training Centre China Meteorological AdministrationBeijing 100081 Tibet Institute of Plateau Atmosphericand Environmental Science Lhasa 850000

Being constructed in southwestern China, the Sichuan–Tibet Railway(STR) travels across the eastern Tibetan Plateau where there is the most complex terrain and changeable weather in the world. Due to sparse ground-based observations over the Tibetan Plateau, precipitation products retrieved by remote sensing are more widely used;however,satellite-based precipitation products(SPPs) have not yet been strictly and systematically evaluated along the STR.This study aims to evaluate the performance of six SPPs by a series of metrics with available ground observations along the STR during 1998–2020. The six SPPs include the datasets derived from the Tropical Rainfall Measuring Mission(TRMM), Climate Prediction Center morphing technique(CMORPH), Global Precipitation Measurement(GPM), Global Satellite Mapping of Precipitation(GSMaP), Precipitation Estimation from Remotely Sensed Information Using Artificial Neural Networks(PERSIANN), and Fengyun-2 satellites precipitation estimate(FY2PRE). The results indicate that most of the SPPs can capture the precipitation characteristics on multiple timescales(monthly,daily, hourly, and diurnal cycle) as shown by the evaluated metrics. The probability density functions of the daily and hourly precipitation are also well represented by the SPPs, and 30 mm day^(-1) and 16 mm h^(-1) are identified as the daily and hourly thresholds of extreme precipitation events along the STR. The best SPP varies at different timescales:GPM and GSMaP are suitable for the monthly and daily scale, and FY2PRE and GPM are suited to the hourly scale.In general, GPM is relatively optimum on multiple timescales, and PERSIANN gives the worst performance. In addition, the SPPs perform worse at higher altitudes and for more intense precipitation. Overall, the results from this study are expected to provide essential reference for using the SPPs in meteorological services and disaster prevention in the STR construction and its future operation.

关键词： eastern Tibetan Plateau Sichuan–Tibet Railway(STR) satellite-based precipitation products evaluation multiple timescales

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

Tailorable,Lightweight and Superelastic Liquid Metal Monoliths for Multifunctional Electromagnetic Interference Shielding

引用

Nano-Micro Letters 2022年第2期14卷 136-150页

作者： Yadong Xu zhiqiang lin Krishnamoorthy Rajavel Tao Zhao Pengli Zhu Yougen Hu Rong Sun Ching-Ping Wong Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Liquid metal(LM)has become an emerging material paradigm in the electromagnetic interference shielding field owing to its excellent electrical conductivity.However,the processing of lightweight bulk LM composites with finite package without leakage is still a great challenge,due to high surface tension and pump-out issues of LM.Here,a novel confined thermal expansion strategy based on expandable microsphere(EM)is proposed to develop a new class of LM-based monoliths with 3D continuous conductive network.The EM/LM monolith(EM/LMm)presents outstanding performance of lightweight like metallic aerogel(0.104 g cm^(-1)),high strength(3.43 MPa),super elasticity(90%strain),as well as excellent tailor ability and recyclability,rely on its unique gas-filled closed-cellular structure and refined LM network.Moreover,the assembled highly conducting EM/LMm exhibits a recorded shielding effectiveness(98.7 dB)over a broad frequency range of 8.2-40 GHz among reported LM-based composites at an ultra-low content of LM,and demonstrates excellent electromagnetic sealing capacity in practical electronics.The ternary EM/LM/Ni monoliths fabricated by the same approach could be promising universal design principles for multifunctional LM composites,and applicable in magnetic responsive actuator.

关键词： Liquid metal Elastic monolith Confined thermal expansion Electromagnetic interference shielding Magnetic actuation

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

Improving Simulations of Vegetation Dynamics over the Tibetan Plateau:Role of Atmospheric Forcing Data and Spatial Resolution

引用

Advances in Atmospheric Sciences 2022年第7期39卷 1115-1132,I0018-I0022页

作者： Zhijie KANG Bo QIU Zheng XIANG Ye LIU zhiqiang lin Weidong GUO School of Atmospheric Sciences Nanjing UniversityNanjing 210046China Pacific Northwest National Laboratory Washington 99354USA Plateau Atmosphere and Environment Key Laboratory of Sichuan Province School of Atmospheric SciencesChengdu University of Information TechnologyChengdu 610225China

The efficacy of vegetation dynamics simulations in offline land surface models(LSMs)largely depends on the quality and spatial resolution of meteorological forcing data.In this study,the Princeton Global Meteorological Forcing Data(PMFD)and the high spatial resolution and upscaled China Meteorological Forcing Data(CMFD)were used to drive the Simplified Simple Biosphere model version 4/Top-down Representation of Interactive Foliage and Flora Including Dynamics(SSiB4/TRIFFID)and investigate how meteorological forcing datasets with different spatial resolutions affect simulations over the Tibetan Plateau(TP),a region with complex topography and sparse observations.By comparing the monthly Leaf Area Index(LAI)and Gross Primary Production(GPP)against observations,we found that SSiB4/TRIFFID driven by upscaled CMFD improved the performance in simulating the spatial distributions of LAI and GPP over the TP,reducing RMSEs by 24.3%and 20.5%,respectively.The multi-year averaged GPP decreased from 364.68 gC m^(-2)yr^(-1)to 241.21 gC m^(-2)yr^(-1)with the percentage bias dropping from 50.2%to-1.7%.When using the high spatial resolution CMFD,the RMSEs of the spatial distributions of LAI and GPP simulations were further reduced by 7.5%and 9.5%,respectively.This study highlights the importance of more realistic and high-resolution forcing data in simulating vegetation growth and carbon exchange between the atmosphere and biosphere over the TP.

关键词： SSiB4 meteorological forcing data vegetation dynamics spatial resolution Tibetan Plateau

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

Regulating the Electrical and Mechanical Properties of TaS_(2) Films via van der Waals and Electrostatic Interaction for High Performance Electromagnetic Interference Shielding

引用

Nano-Micro Letters 2023年第7期15卷 278-292页

作者： Fukang Deng Jianhong Wei Yadong Xu zhiqiang lin Xi Lu Yan-Jun Wan Rong Sun Ching-Ping Wong Yougen Hu Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Shenzhen Geim Graphene Center Institute of Materials ResearchShenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Low-dimensional transition metal dichalcogenides(TMDs) have unique electronic structure, vibration modes, and physicochemical properties, making them suitable for fundamental studies and cutting-edge applications such as silicon electronics, optoelectronics, and bioelectronics. However, the brittleness, low toughness,and poor mechanical and electrical stabilities of TMD-based films limit their application. Herein, a TaS_(2) freestanding film with ultralow void ratio of 6.01% is restacked under the effect of bond-free van der Waals(vdW) interactions within the staggered 2H-TaS_(2) nanosheets.The restacked films demonstrated an exceptionally high electrical conductivity of 2,666 S cm^(-1), electromagnetic interference shielding effectiveness(EMI SE) of 41.8 dB, and absolute EMI SE(SSE/t) of 27,859 dB cm^(2) g^(-1), which is the highest value reported for TMD-based materials. The bond-free vdW interactions between the adjacent 2H-TaS_(2) nanosheets provide a natural interfacial strain relaxation, achieving excellent flexibility without rupture after 1,000 bends. In addition, the TaS_(2) nanosheets are further combined with the polymer fibers of bacterial cellulose and aramid nanofibers via electrostatic interactions to significantly enhance the tensile strength and flexibility of the films while maintaining their high electrical conductivity and EMI SE.This work provides promising alternatives for conventional materials used in EMI shielding and nanodevices.

关键词： 2D transition metal dichalcogenides 2H-TaS_(2) Flexibility Electromagnetic interference shielding

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

弯管内可控万向铰接柔性管动力学特性研究

引用

振动与冲击 2024年第5期43卷 173-181页

作者：林志强罗敏王晶徐亭亭李巧珍东北石油大学机械科学与工程学院黑龙江大庆163318 东北石油大学数学与统计学院黑龙江大庆163318

针对弯管内可控万向铰接柔性管随机动态接触问题,以弯管和可控铰接柔性管为研究对象,采用哈密顿原理结合多体系统动力学理论,引入刚体运动坐标系描述可控铰的运动约束,以管-管接触模型描述可控万向铰接管和弯管的动态接触,建立了弯管内... 详细信息

针对弯管内可控万向铰接柔性管随机动态接触问题,以弯管和可控铰接柔性管为研究对象,采用哈密顿原理结合多体系统动力学理论,引入刚体运动坐标系描述可控铰的运动约束,以管-管接触模型描述可控万向铰接管和弯管的动态接触,建立了弯管内可控万向铰接柔性管多体系统接触非线性动力学的数值计算方法。以超短半径水平井造斜段柔性钻具为例,根据贝克休斯公司的钻具动力学特性标准,对柔性钻杆的振动特性进行了评价,研究了不同转速和不同钻压对柔性钻杆动力学特性的影响。研究结果表明:横向振动是导致柔性钻具可能失效的主要因素;柔性钻杆的横向振动剧烈程度随着转速的增加而减小,随着钻压的增加而增大。

关键词：柔性管哈密顿原理多体系统动力学可控万向铰动态接触

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

Actively priming autophagic cell death with novel transferrin receptor-targeted nanomedicine for synergistic chemotherapy against breast cancer

引用

Acta Pharmaceutica Sinica B 2019年第5期9卷 1061-1077页

作者： Dong Mei Binlong Chen Bing He Haibin Liu zhiqiang lin Jialiang lin Xiaoyan Zhang Ning Sun Libo Zhao Xiaoling Wang Qiang Zhang Clinical Research Center Beijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijing100045China Key Laboratory of Molecular Pharmaceutics New Drug Delivery SystemsSchool of Pharmaceutical SciencesPeking UniversityBeijing100191China Department of General Surgery China-Japan Friendship HospitalBeijing100029China Institute of Systems Biomedicine School of Basic Medical SciencesPeking University Health Science CenterBeijing100191China

Recently, considerable attention in the field of cancer therapy has been focused on the mammalian rapamycin target(m TOR), inhibition of which could result in autophagic cell death(ACD). Though novel combination chemotherapy of autophagy inducers with chemotherapeutic agents is extensively investigated, nanomedicine-based combination therapy for ACD remains in infancy. In attempt to actively trigger ACD for synergistic chemotherapy, here we incorporated autophagy inducer rapamycin(RAP) into 7 pep-modified PEG-DSPE polymer micelles(7 pep-M-RAP) to specifically target and efficiently priming ACD of MCF-7 human breast cancer cells with high expression of transferrin receptor(Tf R). Cytotoxic paclitaxel(PTX)-loaded micelle(7 pep-M-PTX) was regarded as chemotherapeutic drug model. We discovered that with superior intracellular uptake in vitro and more tumor accumulation of micelles in vivo, 7 pep-M-RAP exhibited excellent autophagy induction and synergistic antitumor efficacy with 7 pep-M-PTX. Mechanism study further revealed that 7 pep-M-RAP and 7 pep-MPTX used in combination provided enhanced efficacy through induction of both apoptosis-and mitochondria-associated autophagic cell death. Together, our findings suggested that the targeted excess autophagy may provide a rational strategy to improve therapeutic outcome of breast cancer, and simultaneous induction of ACD and apoptosis may be a promising anticancer modality.

关键词： Autophagic cell death Combination therapy Targeted delivery Rapamycin Breast cancer Transferrin receptor Mitophagy Nanomedicines 7pep

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

农机驾驶员应具备的素质能力及培养思路

引用

农机使用与维修 2024年第5期 106-108页

作者：林志强黑龙江省农业机械工程科学研究院哈尔滨150081

农业机械化生产是现代农业实施的主要形式,农机驾驶员的操作能力直接影响农机作业质量,对于农业生产效益和产量影响巨大。针对现阶段农机驾驶员素质和工作能力,阐述了驾驶员工作中存在的问题和现实需求,分析了农机驾驶员应具备的素质能... 详细信息

农业机械化生产是现代农业实施的主要形式,农机驾驶员的操作能力直接影响农机作业质量,对于农业生产效益和产量影响巨大。针对现阶段农机驾驶员素质和工作能力,阐述了驾驶员工作中存在的问题和现实需求,分析了农机驾驶员应具备的素质能力和职业特征,提出了农机驾驶员的培养思路和相关建议,以期更好促进农机驾驶员职业素质提升。

关键词：农机驾驶员素质能力培养思路

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

常用农业机械安全检查要点及购机注意事项

引用

农机使用与维修 2024年第4期 108-110页

作者：林志强黑龙江省农业机械工程科学研究院哈尔滨150081

随着现代化农业机械的推广与使用,农业生产效率与产品质量得到大幅提升,农业机械安全性能与使用性能的要求也越来越高。通过常用农业机械产品安全性现状分析,阐述常用农业机械安全检查的要点,并提出常用农业机械购机注意事项,为满足新... 详细信息

随着现代化农业机械的推广与使用,农业生产效率与产品质量得到大幅提升,农业机械安全性能与使用性能的要求也越来越高。通过常用农业机械产品安全性现状分析,阐述常用农业机械安全检查的要点,并提出常用农业机械购机注意事项,为满足新形势下农业机械安全检查与合理购机提供一定参考。

关键词：农业机械安全性安全检查购机注意事项

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

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：