检索结果-南通市图书馆

Spontaneous Orientation Polarization of Anisotropic Equivalent Dipoles Harnessed by Entropy Engineering for Ultra‑Thin Electromagnetic Wave Absorber

引用

Nano-Micro Letters 2025年第1期17卷 424-438页

作者： Honghan Wang Xinyu Xiao Shangru Zhai Chuang Xue guangping zheng Deqing Zhang Renchao Che Junye Cheng Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefinerySchool of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian 116034People’s Republic of China School of Life Science and Biotechnology Dalian University of TechnologyDalian 116024People’s Republic of China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077People’s Republic of China School of Materials Science and Engineering Qiqihar UniversityQiqihar 161006People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Department of Materials Science Shenzhen MSU-BIT UniversityShenzhen 517182People’s Republic of China

The synthesis of carbon supporter/nanoscale high-entropy alloys(HEAs)electromagnetic response composites by carbothermal shock method has been identified as an advanced strategy for the collaborative competition engineering of conductive/dielectric *** migration modes within HEAs as manipulated by the electronegativity,valence electron configurations and molar proportions of constituent elements determine the steady state and efficiency of equivalent ***,enlightened by skin-like effect,a reformative carbothermal shock method using carbonized cellulose paper(CCP)as carbon supporter is used to preserve the oxygencontaining functional groups(O·)of carbonized cellulose fibers(CCF).Nucleation of HEAs and construction of emblematic shell-core CCF/HEAs heterointerfaces are inextricably linked to carbon metabolism induced by O·.Meanwhile,the electron migration mode of switchable electronrich sites promotes the orientation polarization of anisotropic equivalent *** virtue of the reinforcement strategy,CCP/HEAs composite prepared by 35%molar ratio of Mn element(CCP/HEAs-Mn_(2.15))achieves efficient electromagnetic wave(EMW)absorption of−51.35 dB at an ultra-thin thickness of 1.03 *** mechanisms of the resulting dielectric properties of HEAs-based EMW absorbing materials are elucidated by combining theoretical calculations with experimental characterizations,which provide theoretical bases and feasible strategies for the simulation and practical application of electromagnetic functional devices(e.g.,ultra-wideband bandpass filter).

关键词： High-entropy alloys Carbothermal shock Switchable electron migration modes Emblematic shell-core heterointerfaces Ultra-thin thickness

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

High-performance microwave absorption enabled by Co_(3)O_(4) modified VB-group laminated VS_(2) with frequency modulation from S-band to Ku-band

引用

Journal of Materials Science & Technology 2022年第12期107卷 155-164页

作者： Zehao Huang Junye Cheng Huibin Zhang Yingfei Xiong Zhanxin Zhou Qingbin zheng guangping zheng Deqing Zhang Maosheng Cao School of Materials Science and Engineering Qiqihar UniversityQiqihar 161006China Department of Materials Science and Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

High performance microwave absorption(MA)materials especially those with tunable frequency are highly desirable for telecommunication industries and military camouflage in the information ***,we constructed hierarchical heterostructures based on VB-group laminated vanadium disulfide(VS_(2))nanosheets embedded with cobalt tetroxide(Co_(3)O_(4))*** highly dispersed Co_(3)O_(4)nanoparticles generate strong electromagnetic coupling networks that could enhance the loss properties of MA ***,the interconnected VS_(2)layered network results in dipolar/interfacial polarization,multiple reflection and scattering favorable for the enhanced MA ***,the maximum reflection loss of the VS_(2)/Co_(3)O_(4)hybrids containing 10%Co_(3)O_(4)can reach 57.96 dB at a thin thickness of 1.57 mm,and the bandwidth with an RL value less than-10 dB is as large as 3.5 *** effective MA band could be adjusted in a range of 15.1 GHz(2.9-18 GHz)from S to Ku bands by the increase in thickness from 1.2 mm to 5.5 *** results show that the synergistic effect of multiple loss mechanisms and good impedance matching could be the reasons for strong MA capability in nearly all frequency bands,and thus,the high-performance and lightweight MA materials could be developed by the VS_(2)/Co_(3)O_(4)hybrids.

关键词： VS2 nanosheets Co_(3)O_(4)nanospheres Hetero-structure Microwave wave absorption

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

Lightweight and High-Performance Microwave Absorber Based on 2D WS2-RGO Heterostructures

引用

Nano-Micro Letters 2019年第3期11卷 21-35页

作者： Deqing Zhang Tingting Liu Junye Cheng Qi Cao guangping zheng Shuang Liang Hao Wang MaoSheng Cao School of Materials Science and Engineering Qiqihar UniversityQiqihar161006People’s Republic of China Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen518060People’s Republic of China Department of Chemistry School of ScienceThe University of TokyoTokyo113.8656Japan4Department of Mechanical EngineeringSchool of EngineeringThe University of TokyoTokyo113.8656Japan Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing100081People’s Republic of China

Two-dimensional(2D)nanomaterials are categorized as a new class of microwave absorption(MA)materials owing to their high specific surface area and peculiar electronic *** this study,2D WS2-reduced graphene oxide(WS2-rGO)heterostructure nanosheets were synthesized via a facile hydrothermal process;moreover,their dielectric and MA properties were reported for the first ***,the maximum reflection loss(RL)of the sample-wax composites containing 40 wt% WS2-rGO was-41.5 dB at a thickness of 2.7 mm;furthermore,the bandwidth where RL<-10 dB can reach up to 13.62 GHz(4.38-18 GHz).Synergistic mechanisms derived from the interfacial dielectric coupling and multiple-interface scattering after hybridization of WS2 with rGO were discussed to explain the drastically enhanced microwave absorption *** results indicate these lightweight WS2-rGO nanosheets to be potential materials for practical electromagnetic wave-absorbing applications.

关键词： 2D WS2 nanosheets Reduced graphene oxide Heterostructure Microwave absorption

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

Recent Advances in Design Strategies and Multifunctionality of Flexible Electromagnetic Interference Shielding Materials

引用

Nano-Micro Letters 2022年第5期14卷 122-152页

作者： Junye Cheng Chuanbing Li Yingfei Xiong Huibin Zhang Hassan Raza Sana Ullah Jinyi Wu guangping zheng Qi Cao Deqing Zhang Qingbin zheng Renchao Che School of Science and Engineering The Chinese University of Hong KongShenzhen 518172People’s Republic of China School of Materials Science and Engineering Qiqihar UniversityQiqihar 161006People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsDepartment of Materials ScienceFudan UniversityShanghai 200438People’s Republic of China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096People’s Republic of China

With rapid development of 5G communication technologies,electromagnetic interference(EMI)shielding for electronic devices has become an urgent demand in recent years,where the development of corresponding EMI shielding materials against detrimental electromagnetic radiation plays an essential ***,the EMI shielding materials with high flexibility and functional integrity are highly demanded for emerging shielding ***,a variety of flexible EMI shielding materials with lightweight and multifunctionalities have been *** this review,we not only introduce the recent development of flexible EMI shielding materials,but also elaborate the EMI shielding mechanisms and the index for"green EMI shielding"*** addition,the construction strategies for sophisticated multifunctionalities of flexible shielding materials are ***,we propose several possible research directions for flexible EMI shielding materials in near future,which could be inspirational to the fast-growing next-generation flexible electronic devices with reliable and multipurpose protections as offered by EMI shielding materials.

关键词： Flexible shielding materials Green shielding index Multifunctionalities EMI shielding mechanism

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

Building the conformal protection of VB-group VS_(2)laminated heterostructure based on biomass-derived carbon for excellent broadband electromagnetic waves absorption

引用

Journal of Materiomics 2023年第3期9卷 492-501页

作者： Honghan Wang Huibin Zhang Junye Cheng Tingting Liu Deqing Zhang guangping zheng Shangru Zhai Maosheng Cao School of Materials Science and Engineering Qiqihar UniversityQiqihar161006China Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefineryCollege of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian116034China Department of Materials Science Shenzhen MSU-BIT UniversityShenzhenGuangdong Province517182China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing100081China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

Although VB-Group transition metal disulfides(TMDs)VS_(2)nanomaterials with specific electronic properties and multiphase microstructures have shown fascinating potential in the field of electro-magnetic wave(EMW)absorption,the efficient utilization of VS_(2)is limited by the technical bottleneck of its narrow effective absorption bandwidth(EAB)which is attributed to environmental instability and a deficient electromagnetic(EM)loss *** order to fully exploit the maximal utilization values of VS_(2)nanomaterials for EMW absorption through mitigating the chemical instability and optimizing the EM parameters,biomass-based glucose derived carbon(GDC)like sugar-coating has been decorated on the surface of stacked VS_(2)nanosheets via a facile hydrothermal method,followed by high-temperature *** a result,the modulation of doping amount of glucose injection solution(Glucose)could effectively manipulate the encapsulation degree of GDC coating on VS_(2)nanosheets,further imple-menting the EM response mechanisms of the VS_(2)/GDC hybrids(coupling effect of conductive loss,interfacial polarization,relaxation,dipole polarization,defect engineering and multiple reflections and absorptions)through regulating the conductivity and constructing multi-interface heterostructures,as reflected by the enhanced EMW absorption performance to a great *** minimum reflection loss(Rmin)of VS_(2)/GDC hybrids could reach52.8 dB with a thickness of 2.7 mm at 12.2 ***,compared with pristine VS_(2),the EAB of the VS_(2)/GDC hybrids increased from 2.0 to 5.7 GHz,while their environmental stability was effectively enhanced by virtue of GDC ***,this work provides a promising candidate to realize frequency band tunability of EMW absorbers with exceptional perfor-mance and environmental stability.

关键词： VS_(2)/GDC hybrids Multi-interface heterostructures Broadband absorption Environmental stability

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

Nickel-metal-organic framework nanobelt based composite membranes for efficient Sr^(2+) removal from aqueous solution

引用

Environmental Science and Ecotechnology 2020年第3期3卷 13-22页

作者： Junye Cheng Kaili Liu Xin Li Lei Huang Jie Liang guangping zheng Guangcun Shan School of Instrumentation Science and Opto-electronics Engineering Beihang UniversityNo.37 XueYuan RoadBeijing100083China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityKowloonHong Kong999077China School of Environment and Space Engineering Beihang UniversityBeijing100191China School of Metallurgy and Environment Central South UniversityChangsha410083China

The sorption removal of radionuclides Sr^(2+) using a freestanding functional membrane is an interesting and significant research area in the remediation of radioactive ***,a novel self-assembled membrane consisting of metaleorganic framework(MOF)nanobelts and graphene oxides(GOs)are synthesized through a simple and facile filtration *** membrane possesses a unique interwove morphology as evidenced from SEM *** experiments suggest that the GO/Ni-MOF composite membrane could remove Sr^(2+) ions from aqueous solutions and the Sr^(2+) adsorption capacity and efficiency of the GO/Ni-MOF composite membrane is relevant to the MOF content in the ***,the dominant interaction mechanism was interface or surface complexation,electrostatic interaction as well as ion *** maximum effective sorption of Sr^(2+) over GO/Ni-MOF membrane is 32.99% with 2 mg composite membrane containing a high content of Ni-MOF at 299 K in 100 mg/L Sr^(2+) aqueous *** FT-IR and XPS results suggest that the synergistic effect between GO and Ni-MOF is determinant in the sorption Sr^(2+) *** GO/Ni-MOF composite membrane is demonstrated to have the advantages of efficient removal of Sr^(2+),low cost and simple synthesis route,which is promising in the elimination of radionuclide contamination.

关键词： Metaleorganic framework(MOF)nanobelts Graphene oxide Radioactive waste Strontium ions Adsorption

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

Two‑Dimensional Black Phosphorus Nanomaterials:Emerging Advances in Electrochemical Energy Storage Science

引用

Nano-Micro Letters 2020年第12期12卷 284-317页

作者： Junye Cheng Lingfeng Gao Tian Li Shan Mei Cong Wang Bo Wen Weichun Huang Chao Li guangping zheng Hao Wang Han Zhang Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Collaborative Innovation Center for Optoelectronic Science and Technology International Collaborative Laboratory of 2D Materials for Optoelectronic Science and Technology of Ministry of Education and Guangdong ProvinceShenzhen UniversityShenzhen 518060People’s Republic of China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA Nantong Key Lab of Intelligent and New Energy Materials College of Chemistry and Chemical EngineeringNantong UniversityNantong 226019JiangsuPeople’s Republic of China

Two-dimensional black phosphorus(2D BP),well known as phosphorene,has triggered tremendous attention since the first discovery in *** unique puckered monolayer structure endows 2D BP intriguing properties,which facilitate its potential applications in various fields,such as catalyst,energy storage,sensor,*** to the large surface area,good electric conductivity,and high theoretical specific capacity,2D BP has been widely studied as electrode materials and significantly enhanced the performance of energy storage *** the rapid development of energy storage devices based on 2D BP,a timely review on this topic is in demand to further extend the application of 2D BP in energy *** this review,recent advances in experimental and theoretical development of 2D BP are presented along with its structures,properties,and synthetic ***,their emerging applications in electrochemical energy storage,including Li−/K−/Mg−/Na-ion,Li–S batteries,and supercapacitors,are systematically summarized with milestones as well as the *** from the fast-growing dynamic investigation of 2D BP,some possible improvements and constructive perspectives are provided to guide the design of 2D BP-based energy storage devices with high performance.

关键词： 2D black phosphorus Electronic structure Supercapacitors Batteries

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

Titanium-containing high entropy oxide(Ti-HEO):A redox expediting electrocatalyst towards lithium polysulfides for high performance Li-S batteries

引用

Nano Research Energy 2024年第3期3卷 39-49页

作者： Hassan Raza Junye Cheng Jingwei Wang Subash Kandasamy guangping zheng Guohua Chen Department of Materials Science Shenzhen MSU-BIT UniversityShenzhen 517182China Department of Mechanical Engineering Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARChina School of Energy and Environment City University of Hong KongDat Chee AvenueKowloonHong Kong SARChina

Since lithium sulfur(Li-S)energy storage devices are anticipated to power portable gadgets and electric vehicles owing to their high energy density(2600 Wh·kg^(-1));nevertheless,their usefulness is constrained by sluggish sulfur reaction kinetics and soluble lithium polysulfide(LPS)shuttling *** electrically conductive bifunctional electrocatalysts are urgently needed for Li-S batteries,and high-entropy oxide(HEO)is one of the most promising *** this work,we synthesize titanium-containing high entropy oxide(Ti-HEO)(TiFeNiCoMg)O with enhanced electrical conductivity through calcining metal-organic frameworks(MOF)templates at modest *** resulting single-phase Ti-HEO with high conductivity could facilitate chemical immobilization and rapid bidirectional conversion of *** a result,the Ti-HEO/S/KB cathode(with 70 wt.%of sulfur)achieves an initial discharge capacity as high as~1375 mAh·g^(-1)at 0.1 C,and a low-capacity fade rate of 0.056%per cycle over 1000 cycles at 0.5 *** increased sulfur loading(~5.0 mg·cm^(-2)),the typical Li-S cell delivered a high initial discharge capacity of~607 mAh·g^(-1)at 0.2 C and showcased good cycling *** work provides better insight into the synthesis of catalytic Ti-containing HEOs with enhanced electrical conductivity,which are effective in simultaneously enhancing the LPS-conversion kinetics and reducing the LPS shuttling effect.

关键词： titanium containing high entropy oxide(Ti-HEOs) multi-metal-MOFs template method electrical conductivity lithium-sulfur batteries catalytic conversion

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

Low-frequency and dual-band microwave absorption properties of novel VB-group disulphides(3R–TaS_(2))nanosheets

引用

Nano Materials Science 2024年第5期6卷 635-646页

作者： Liquan Fan Honglin Ai Meiye Jiao Yao Li Yongheng Jin Yiru Fu Jing Wang Yuwei Wang Deqing Zhang guangping zheng Junye Cheng College of Materials Science and Engineering Heilongjiang Provincial Key Laboratory of Polymeric Composite MaterialsQiqihar UniversityNo.42Wenhua StreetQiqihar161006PR China Department of Materials Science Shenzhen MSU-BIT UniversityShenzhenGuangdong Province517182PR China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

As electromagnetic technology advances and demand for electronic devices grows,concerns about electromagnetic pollution *** has spurred focused research on innovative electromagnetic absorbers,particularly chalcogenides,noted for their superior absorption *** this study,we successfully synthesize 3R–TaS_(2)nanosheets using a straightforward calcination method for the first *** nanosheets exhibit significant absorption capabilities in both the C-band(4–8 GHz)and Ku-band(12–18 GHz)frequency *** optimizing the calcination process,the complex permittivity of TaS_(2)is enhanced,specifically for those synthesized at 1000℃for 24 *** nanosheets possess dual-band absorption properties,with a notable minimum reflection loss(RLmin)of41.4 dB in the C-band,and an average absorption intensity exceeding 10 dB in C-and Ku-bands,in the absorbers with a thickness of 5.6 ***,the 3R–TaS_(2)nanosheets are demonstrated to have an effective absorption bandwidth of 5.04 GHz(3.84–8.88 GHz)in the absorbers with thicknesses of 3.5–5.5 *** results highlight the multiple reflection effects in 3R–TaS_(2)as caused by their stacked structures,which could be promising low-frequency absorbers.

关键词： 3R-TaS_(2) Nanosheets Electromagnetic wave absorption Reflection loss

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

From VIB‑to VB‑Group Transition Metal Disulfides:Structure Engineering Modulation for Superior Electromagnetic Wave Absorption

引用

Nano-Micro Letters 2024年第2期16卷 218-257页

作者： Junye Cheng Yongheng Jin Jinghan Zhao Qi Jing Bailong Gu Jialiang Wei Shenghui Yi Mingming Li Wanli Nie Qinghua Qin Deqing Zhang guangping zheng Renchao Che Department of Materials Science Shenzhen MSU-BIT UniversityShenzhen 517182People’s Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Qiqihar UniversityQiqihar 161006People’s Republic of China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China

The laminated transition metal disulfides(TMDs),which are well known as typical two-dimensional(2D)semiconductive materials,possess a unique layered structure,leading to their wide-spread applications in various fields,such as catalysis,energy storage,sensing,*** recent years,a lot of research work on TMDs based functional materials in the fields of electromagnetic wave absorption(EMA)has been carried ***,it is of great significance to elaborate the influence of TMDs on EMA in time to speed up the *** this review,recent advances in the development of electromagnetic wave(EMW)absorbers based on TMDs,ranging from the VIB group to the VB group are *** compositions,microstructures,electronic properties,and synthesis methods are presented in ***,the modulation of structure engineering from the aspects of heterostructures,defects,morphologies and phases are systematically summarized,focusing on optimizing impedance matching and increasing dielectric and magnetic losses in the EMA materials with tunable EMW absorption *** as well as the challenges are also identified to guide the design of new TMDs based dielectric EMA materials with high performance.

关键词： Transition metal disulfides Electromagnetic wave absorption Impedance matching Structure engineering modulation

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

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：