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Highly Aligned Graphene Aerogels for Multifunctional Composites

Nano-Micro Letters 2024年第6期16卷 276-342页

作者： Ying Wu Chao An Yaru Guo Yangyang Zong Naisheng Jiang qingbin zheng Zhong‑Zhen Yu Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004People’s Republic of China School of Science and Engineering The Chinese University of Hong KongShenzhenShenzhenGuangdong 518172People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Stemming from the unique in-plane honeycomb lattice structure and the sp^(2)hybridized carbon atoms bonded by exceptionally strong carbon–carbon bonds,graphene exhibits remarkable anisotropic electrical,mechanical,and thermal *** maximize the utilization of graphene’s in-plane properties,pre-constructed and aligned structures,such as oriented aerogels,films,and fibers,have been *** unique combination of aligned structure,high surface area,excellent electrical conductivity,mechanical stability,thermal conductivity,and porous nature of highly aligned graphene aerogels allows for tailored and enhanced performance in specific directions,enabling advancements in diverse *** review provides a comprehensive overview of recent advances in highly aligned graphene aerogels and their *** highlights the fabrication methods of aligned graphene aerogels and the optimization of alignment which can be estimated both qualitatively and *** oriented scaffolds endow graphene aerogels and their composites with anisotropic properties,showing enhanced electrical,mechanical,and thermal properties along the alignment at the sacrifice of the perpendicular *** review showcases remarkable properties and applications of aligned graphene aerogels and their composites,such as their suitability for electronics,environmental applications,thermal management,and energy *** and potential opportunities are proposed to offer new insights into prospects of this material.

关键词： Highly aligned graphene aerogels Quantitative characterization of alignment Multifunctional composites Anisotropic properties Multifunctional applications

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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

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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

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

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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

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Anisotropic,Wrinkled,and Crack-Bridging Structure for Ultrasensitive,Highly Selective Multidirectional Strain Sensors

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Nano-Micro Letters 2021年第8期13卷 121-135页

作者： Heng Zhang Dan Liu Jeng-Hun Lee Haomin Chen Eunyoung Kim Xi Shen qingbin zheng Jinglei Yang Jang-Kyo Kim Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongPeople’s Republic of China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172GuangdongPeople’s Republic of China

Flexible multidirectional strain sensors are crucial to accurately determining the complex strain states involved in emerging sensing *** considerable efforts have been made to construct anisotropic structures for improved selective sensing capabilities,existing anisotropic sensors suffer from a trade-off between high sensitivity and high stretchability with acceptable ***,an ultrasensitive,highly selective multidirectional sensor is developed by rational design of functionally different anisotropic *** bilayer sensor consists of an aligned carbon nanotube(CNT)array assembled on top of a periodically wrinkled and cracked CNT-graphene oxide *** transversely aligned CNT layer bridge the underlying longitudinal microcracks to effectively discourage their propagation even when highly stretched,leading to superior sensitivity with a gauge factor of 287.6 across a broad linear working range of up to 100%*** wrinkles generated through a pre-straining/releasing routine in the direction transverse to CNT alignment is responsible for exceptional selectivity of 6.3,to the benefit of accurate detection of loading directions by the multidirectional *** work proposes a unique approach to leveraging the inherent merits of two cross-influential anisotropic structures to resolve the trade-off among sensitivity,selectivity,and stretchability,demonstrating promising applications in full-range,multi-axis human motion detection for wearable electronics and smart robotics.

关键词： Anisotropic strain sensor Wrinkle Aligned carbon nanotube Stretchability Complex motion detection

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Production of Fibres from Lunar Soil:Feasibility,Applicability and Future Perspectives

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Advanced Fiber Materials 2022年第5期4卷 923-937页

作者： Ze‑Shi Guo Dan Xing Xiong‑Yu Xi Xiu Yue Cun‑Guang Liang Bin Hao qingbin zheng Sergey I.Gutnikov Bogdan I.Lazoryak Peng‑Cheng Ma Laboratory of Environmental Science and Technology The Xinjiang Technical Institute of Physics and ChemistryKey Laboratory of Functional Materials and Devices for Special EnvironmentsChinese Academy of SciencesUrumqi 830011China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China Chemistry Department Lomonosov Moscow State University119991 MoscowRussia

The construction of a lunar base is considered to be an important step towards deep-space exploration by humanity,and will rely on the utilisation of in situ lunar *** this paper,we discuss the current knowledge on the feasibility of converting lunar soil to high-performance fibres that can be used for the construction of a lunar *** fibre would be combined with further portions of lunar soil to generate fibre-reinforced composites,which is utilized as multi-functional materials for lunar base *** discuss and analyse the latest findings regarding the composition of lunar soil simulants and their fibrisation properties,and techniques for fibre spinning and system ***,we suggest how the achievements made so far could be applied to the construction of a lunar base.

关键词： Lunar soil Lunar fibre In-situ resource utilization Construction of lunar base

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宏基因组二代测序技术在单纯疱疹肺炎混合感染患者中的应用

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中国医师杂志 2022年第5期24卷 728-732页

作者：侯红玲孙国先刘微丽郑庆斌扬州大学附属医院神经内科扬州225001 扬州大学附属医院临床药学科扬州225001 扬州大学附属医院重症医学科扬州225001

目的探讨宏基因组二代测序(mNGS)技术在单纯疱疹肺炎混合感染患者中的应用价值。方法回顾性分析扬州大学附属医院2018年6月至2021年1月行肺泡灌洗液传统病原检测和mNGS检测的肺炎患者的临床资料,包括患者一般资料、mNGS检测结果、细菌... 详细信息

目的探讨宏基因组二代测序(mNGS)技术在单纯疱疹肺炎混合感染患者中的应用价值。方法回顾性分析扬州大学附属医院2018年6月至2021年1月行肺泡灌洗液传统病原检测和mNGS检测的肺炎患者的临床资料,包括患者一般资料、mNGS检测结果、细菌培养结果等信息,评价mNGS技术对单纯疱疹肺炎混合感染诊疗的价值。结果共纳入41例mNGS检测为单纯疱疹病毒-1型(HSV-1)阳性的患者,包括4例HSV-1病原携带者和37例HSV-1感染者(12例为HSV-1单一感染,25例为HSV-1混合感染)。男22例,女19例,年龄范围46~83岁,中位年龄67岁。采用mNGS技术检测的25例HSV-1混合感染患者占比较高的病原体分别为耶氏肺孢子虫(6例,24.0%)、鲍曼不动杆菌(4例,16.0%)、肺炎克雷伯菌(4例,16.0%)、烟曲霉(3例,12.0%)。HSV-1病原携带组、HSV-1单一感染组和HSV-1混合感染组辛普森菌群多样性指数比较,差异具有统计学意义(P<0.05)。与12例HSV-1单一感染者比较,25例HSV-1混合感染者的体温恢复正常时间更长[(5.16±2.04)d vs(3.75±1.29)d],抗感染药疗程也更长[(10.60±2.18)d vs(8.92±1.98)d],差异均有统计学意义(均P<0.05)。结论mNGS技术在识别HSV-1混合感染优势明显,有利于医师精准治疗。

关键词：肺炎疱疹病毒1型,人同时感染宏基因组高通量核苷酸序列分析

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基于顶层设计的贫困大学生资助绩效评估研究——以湄洲湾职业技术学院为例

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广东石油化工学院学报 2014年第5期24卷 16-19页

作者：林俊郑庆彬朱华湄洲湾职业技术学院学生工作处福建莆田351100

贫困大学生资助项目需要顶层设计,而顶层设计亦能最终实现资助项目的可持续发展。以往研究者在对贫困生资助绩效进行研究、分析和评价时,视角较为宏观,缺乏具体的考核指标和有效的理论支撑,这给实践工作带来了相对的局限性。顶层设计的... 详细信息

贫困大学生资助项目需要顶层设计,而顶层设计亦能最终实现资助项目的可持续发展。以往研究者在对贫困生资助绩效进行研究、分析和评价时,视角较为宏观,缺乏具体的考核指标和有效的理论支撑,这给实践工作带来了相对的局限性。顶层设计的理念对高校贫困生资助绩效评估的工作理念、准确认定困难程度以及绩效评估工作机制都提出了新的要求。

关键词：贫困大学生资助顶层设计绩效评估指标

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肺泡灌洗液二代测序在重症肺炎病原菌未明患者中的应用

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中国基层医药 2020年第24期27卷 2951-2955页

作者：孙国先刘微丽郑庆斌袁文杰侯红玲扬州大学附属医院临床药学科 225001 扬州大学附属医院重症医学科 225001 扬州大学附属医院神经内科 225001

目的分析宏基因组二代测序(mNGS)技术在重症肺炎病原菌未明患者中的应用价值。方法回顾性分析扬州大学附属医院2019年6月至2020年2月采用肺泡灌洗液mNGS技术辅助诊疗的重症肺炎病原菌未明患者8例的临床资料,包括肺泡灌洗液涂片、培养、m... 详细信息

目的分析宏基因组二代测序(mNGS)技术在重症肺炎病原菌未明患者中的应用价值。方法回顾性分析扬州大学附属医院2019年6月至2020年2月采用肺泡灌洗液mNGS技术辅助诊疗的重症肺炎病原菌未明患者8例的临床资料,包括肺泡灌洗液涂片、培养、mNGS检测等结果,分析患者的临床特点与mNGS检测情况。依据mNGS结果并结合临床医师的判断,将是否明确为病原菌分为病原菌确定组、病原菌未确定组,比较两组辛普森菌群多样性指数。结果8例患者中,男5例,女3例;年龄范围41~71岁,中位年龄62.5岁。除1例患者无慢性疾病外,其余患者合并糖尿病、慢性阻塞性肺疾病、肾脏移植等。8例患者mNGS检测阳性,3例患者常规检测阳性。病原菌确定组(n=5)与病原菌未确定组(n=3)辛普森菌群多样性指数比较,差异有统计学意义[(0.398±0.222)比(0.763±0.061),t=2.709,P=0.035]。2例患者mNGS检测阳性与常规检测阳性结果不同。3例卡氏肺孢子虫mNGS检测阳性患者的核酸序数为120~15580,相对丰度为24.6%~99.8%。结论肺泡灌洗液mNGS技术有助于医师快速、全面掌握病原菌信息,特别适用于重症肺炎病原菌未明患者。

关键词：基因组学高通量核苷酸测序肺炎支气管肺泡灌洗液血传病原体诊断治疗应用

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月壤纤维材料研究进展与展望

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深空探测学报（中英文） 2023年第5期10卷 532-543页

作者：马鹏程郭泽世苏秀中赵晨梁存光葸雄宇邢丹郑庆彬中国科学院新疆理化技术研究所环境科学与技术研究室中国科学院特殊环境功能材料与器件重点实验室乌鲁木齐830011 中国科学院大学材料科学与光电技术学院北京100049 上海宇航系统工程研究所上海201100 香港中文大学(深圳)理工学院深圳518172

以月球基地建设中对结构和功能材料的需求为出发点,探讨了利用月壤制备纤维并用于月球基地建设的可行性,总结了目前国内外在月壤纤维制备领域的研究现状。在此基础上分析了月壤纤维在月球基地中用于结构防护、生存和生命保障等领域的独... 详细信息

以月球基地建设中对结构和功能材料的需求为出发点,探讨了利用月壤制备纤维并用于月球基地建设的可行性,总结了目前国内外在月壤纤维制备领域的研究现状。在此基础上分析了月壤纤维在月球基地中用于结构防护、生存和生命保障等领域的独特优势和应用前景,提出了未来月壤纤维领域应重点研究和突破的关键理论和技术基础,以期从基础研究和应用需求层面促进月壤纤维这一前瞻性研究领域的发展。

关键词：月壤月壤纤维资源原位利用月球基地建设

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Motion Control in Saccade and Smooth Pursuit for Bionic Eye Based on Three-dimensional Coordinates

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Journal of Bionic Engineering 2017年第2期14卷 336-347页

作者： qingbin Wang Wei Zou De Xu zheng Zhu Research Center of Precision Sensing and Control Institute of Automation Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100190 China

Saccade and smooth pursuit are two important functions of human eye. In order to enable bionic eye to imitate the two functions, a control method that implements saccade and smooth pursuit based on the three-dimensional coordinates of target is proposed. An optimal observation position is defined for bionic eye based on three-dimensional coordinates. A kind of motion planning method with high accuracy is developed. The motion parameters of stepper motor consisting of angle acceleration and turning time are computed according to the position deviation, the target＇s angular velocity and the stepper motor＇s current angular velocity in motion planning. The motors are controlled with the motion parameters moving to given position with desired angular velocity in schedule time. The experimental results show that the bionic eye can move to optimal observation positions in 0.6 s from initial location and the accuracy of 3D coordinates is improved. In addition, the bionic eye can track a target within the error of less than 20 pixels based on three-dimensional coordinates. It is verified that saccade and smooth pursuit of bionic eye based on three-dimensional coordinates are feasible.

关键词： bionic eye saccade smooth pursuit motion planning observation position

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