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Multifunctional high-performance pressure/proximity/temperature sensors enabled by hybrid resistive-supercapacitive response

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Nano Research 2024年第6期17卷 5604-5613页

作者： Huijun Kong Zhongqian Song Meichun Ding Changxiang Shao Jiahui Yu Baolei Wang Weiyan li Chenwei li li niu School of Chemistry and Pharmaceutical Engineering Shandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China College of Artificial Intelligence and Big Data for Medical Sciences Shandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China School of Chemical Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

The issue of sensitivity attenuation in high-pressure region has been a persistent concern for pressure-sensitive electronic *** order to tackle such trade-off between sensitivity and linear range,herein,a hybrid piezoresistive-supercapacitive(HRSC)strategy is proposed via introducing a piezoresistive porous aerogel layer between the charge collecting electrodes and iontronic films of the pressure ***,the HRSC-induced impedance regulation and supercapacitive behavior contribute to significant mitigation in sensitivity attenuation,achieving high sensitivity across wide linear range(44.58 kPa^(−1)from 0 to 3 kPa and 23.6 kPa^(−1)from 3 to 12 kPa).The HRSC pressure sensor exhibits a low detection limit of 1 Pa,fast responsiveness(~130 ms),and excellent cycling stability,allowing to detect tiny pressure of air flow,finger bending,and human ***,the HRSC sensor exhibits exceptional perception capabilities for proximity and temperature,broadening its application scenarios in prosthetic perception and electronic *** proposed HRSC strategy may boost the ongoing research on structural design of high-performance and multimodal electronic sensors.

关键词： multimodal sensor pressure sensor high sensitivity MXene/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)aerogel structural design

Carbon steel anticorrosion performance and mechanism of sodium lignosulfonate

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Rare Metals 2024年第1期43卷 356-365页

作者： Bo-Kai liao Rui-Xuan Quan Ping-Xian Feng Huan Wang Wei Wang li niu School of Chemistry and Chemical Engineering Guangzhou Key Laboratory of Sensing Materials and DevicesJoint Institute of Guangzhou University and Institute of Corrosion Science and TechnologyGuangzhou UniversityGuangzhou 510006China

lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups. It has excellent ionic complexation ability and amphiphilic molecular structure *** this study, the carbon steel anticorrosion performance of sodium lignosulfonate(SLS) in an acid solution was evaluated using the weight loss method, electrochemical measurements, scanning vibration electrode technique(SVET), and surface characterization methods. SLS exhibited excellent corrosion inhibition efficiency for Q235carbon steel in 1 mol·L^(-1) HCl, reaching a maximum value of 98%. A low SLS concentration of 20 mg·L^(-1) resulted in the maximum corrosion inhibition efficiency, which remained nearly constant at higher SLS *** SVET test demonstrated that the formation of an SLS adsorption film can impede corrosion. This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials.

关键词： lignin Sodium lignosulfonate Corrosion inhibitor Carbon Steel

Recent Progress in Optical Sensors Based on MXenes Quantum Dots and MXenes Nanosheets

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Journal of Analysis and Testing 2024年第1期8卷 95-113页

作者： Chunxiao lin Xinhong Song Weilan Ye Ting liu Mingcong Rong li niu Guangzhou Key Laboratory of Sensing Materials and Devices/Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai 201306China

In recent years,MXenes,as a new promising two-dimensional material,have received extensive attentions in the fields of environmental remediation,catalysts,sensors,and energy *** broaden the applications of MXenes in sensing,MXenes nanosheets(MNSs) and MXenes quantum dots(MQDs) are prepared by physical etching or chemical *** are monolayered or multilayered MXenes nanosheets within several nanometers in height,and can serve as the perfect reaction substrate and fluorescence *** are spherical,fluorescent MXenes QDs within several nanometers in size,which possess favorable stability and photo *** the distinct features such as high conductivity,favorable hydrophilicity,biocompatibility,abundant surface functional groups,and easy functionalization,MNSs and MQDs show potential applications in the fields of anti-counterfeiting,environmental monitoring,biosensing and *** review focuses on the research of MNS s/MQDs-based optical sensors,including colorimetric sensors,fluorescence sensors,electrochemiluminescence sensors,surface plasmon resonance sensors,and surface-enhanced Raman scattering ***,the current challenges and prospects concerning MNSs/MQDs-based optical sensing techniques are discussed.

关键词： MXenes quantum dots Fluorescence Colorimetry Electrochemiluminescence Surface plasmon resonance

Asymmetric frequency multiplexing topological devices based on a floating edge band

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Photonics Research 2024年第6期12卷 1201-1212页

作者： JIAJUN MA CHUNMEI OUYANG YUTING YANG DONGYANG WANG HONGYI li li niu YI liU QUAN XU YANFENG li ZHEN TIAN JIAGUANG HAN WEIli ZHANG Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering and Key Laboratory of Optoelectronics Information and TechnologyTianjin UniversityTianjin 300072China School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK Guangxi Key Laboratory of Optoelectronic Information Processing School of Optoelectronic EngineeringGuilin University of Electronic TechnologyGuilin 541004China School of Electrical and Computer Engineering Oklahoma State UniversityStillwaterOklahoma 74078USA

Topological photonics provides a platform for robust energy transport regardless of sharp corners and ***,the frequency multiplexing topological devices have attracted much attention due to the ability to separate optical signals by wavelength and hence the potential application in optical communication *** frequency multiplexing topological devices are generally based on the slow light ***,the resulting static local spatial mode or finely tuned flat band has zero-group velocity,making it difficult for both experimental excitation and channel ***,we propose and experimentally demonstrate an alternative prototype of asymmetric frequency multiplexing devices including a topological rainbow and frequency router based on floating topological edge mode(instead of localized ones);hence the multiple wavelength channels can be collectively excited with a point source and efficiently routed to separate output *** channel separation in our design is achieved by gradually tuning the band gap truncation on a topological edge band over a wide range of frequencies.A crucial feature lies in that the topological edge band is detached from bulk states and floating within the upper and lower photonic band *** interestingly,due to the sandwiched morphology of the edge band,the top and bottom band gaps will each truncate into transport channels that support topological propagation towards opposite directions,and the asymmetrical transportation is realized for the frequency multiplexing topological devices.

关键词： tuning floating hence

High-efficiency preparation of multifunctional conjugated electrospun graphene doped PVDF/CF yarns for energy harvesting and human movement monitoring in TENG textile

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Nano Research 2024年第5期17卷 4478-4488页

作者： Ting Yang Chengwei Wan Xiaoyu Zhang Tong liu li niu Jian Fang Yuqing liu College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123China

Portable power is an effective solution to realize self-powered sensors for wearable devices,promoting future sustainable ***-based triboelectric nanogenerators(M-TENGs)have emerged as a promising technology for harvesting biomechanical energy from human motion owing to their advantages,such as simple structure,lightweight design,and efficient energy ***,the poor durability,low adaptability,and un-washability of two-dimensional membrane materials have largely hindered their application in wearable *** this study,we propose a sheath-core polyvinylidene fluoride(PVDF)/graphene(G)-carbon fiber(CF)yarn fabricated via conjugate electrospinning,comprising a commercial CF core and an electrospun graphene-doped PVDF sheath,which improves the fatigue resistance of electrospun nanofiber films under prolonged friction and keeps a high degree of *** resulting electronic textile,woven with the large-scale electrospun PVDF/G-CF yarn,demonstrates a remarkable power density of 25.5 mW·m^(-2).The tight distribution of PVDF/G nanofibers on the textile surface ensures excellent softness,washability,and ***,the electrospun PVDF/G-CF textile exhibits significant potential in pressure sensing,self-powered operation,and motion detection,making it highly suitable for wearable electronics applications.

关键词： yarn-based triboelectric nanogenerator(TENG) graphene polyvinylidene fluoride(PVDF) conjugated-electrospinning multifunctional

Quantile Regression under Truncated, Censored and Dependent Assumptions

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Acta Mathematicae Applicatae Sinica 2024年

作者： Chang-sheng liU Yun-jiao LU Si-li niu School of Mathematical Sciences Tongji University School of Mathematics and Physics Henan University of Urban Construction

In this paper, we focus on the problem of nonparametric quantile regression with left-truncated and right-censored data. Based on Nadaraya-Watson(NW) Kernel smoother and the technique of local linear(LL) smoother, we construct the NW and LL estimators of the conditional quantile. Under strong mixing assumptions, we establish asymptotic representation and asymptotic normality of the estimators. Finite sample behavior of the estimators is investigated via simulation, and a real data example is used to illustrate the application of the proposed methods.

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Boosting High-Voltage Practical lithium Metal Batteries with Tailored Additives

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Nano-Micro Letters 2024年第12期 31-49页

作者： Jinhai You Qiong Wang Runhong Wei li Deng Yiyang Hu li niu Jingkai Wang Xiaomei Zheng Junwei li Yao Zhou Jun-Tao li College of Energy Xiamen University Laboratory for Soft Matter and Biophysics Department of Physics and Astronomy State Key Lab of Physical Chemistry of Solid Surface College of Chemistry and Chemical Engineering Xiamen University College of Chemistry and Chemical Engineering Northwest Normal University Magnetism Key Laboratory of Zhejiang Province College of Materials and Chemistry China Jiliang University Department of Chemical Engineering

The lithium（li） metal anode is widely regarded as an ideal anode material for high-energy-density batteries. However, uncontrolled li dendrite growth often leads to unfavorable interfaces and low Coulombic efficiency（CE）, limiting its broader application. Herein, an ether-based electrolyte（termed FGN-182） is formulated, exhibiting ultra-stable li metal anodes through the incorporation of li FSI and liNO3as dual salts. The synergistic effect of the dual salts facilitates the formation of a highly robust SEI film with fast li+ transport kinetics. Notably, li||Cu half cells exhibit an average CE reaching up to 99.56%. In particular, pouch cells equipped with high-loading lithium cobalt oxide(LCO, 3 m Ah cm-2) cathodes, ultrathin li chips（25 μm）, and lean electrolytes(5 g Ah-1) demonstrate outstanding cycling performance, retaining 80% capacity after 125 cycles. To address the gas issue in the cathode under high voltage, cathode additives 1,3,6-tricyanohexane is incorporated with FGN-182; the resulting high-voltage LCO||li（4.4 V） pouch cells can cycle steadily over 93 cycles. This study demonstrates that, even with the use of ether-based electrolytes, it is possible to simultaneously achieve significant improvements in both high li utilization and electrolyte tolerance to high voltage by exploring appropriate functional additives for both the cathode and anode.

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基于汉代画像砖实证材料的进贤冠起源、形制及使用

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丝绸 2024年第1期61卷 129-138页

作者：高祥牛犁江南大学设计学院江苏无锡214122 江南大学教育部中华优秀传统文化传承基地江苏无锡214122

进贤冠是汉族男子冠服体系中极具代表性的冠式,其演变与中国古代官员制度的发展相联系。为了研究汉族冠服形象体系中文职官员的进贤形象,文章基于汉代画像砖史料实证汉代进贤冠的起源、形制及使用,有助于推动汉代男子官员形象研究。研... 详细信息

进贤冠是汉族男子冠服体系中极具代表性的冠式,其演变与中国古代官员制度的发展相联系。为了研究汉族冠服形象体系中文职官员的进贤形象,文章基于汉代画像砖史料实证汉代进贤冠的起源、形制及使用,有助于推动汉代男子官员形象研究。研究指出,进贤冠作为汉代官职体系发展的衍生物,在西汉时期就已存在基础样式,经新政时期完备,在东汉时期趋于成熟。汉代进贤冠独具特色的形制样式及符号表征在传统的各阶级中烙下深刻印记。进贤形象呈现中华文化独特的价值观及礼仪规范,是传统阶级文化的沉淀亦是多维审美趣味的展现,对历代汉族男子的冠服体系发展奠定重要基础。

关键词：汉代进贤冠汉代画像砖进贤形象官民阶级文官体系礼仪符号

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数字医学时代罕见病研究发展新趋势

临床儿科杂志 2024年第2期42卷 96-101页

作者：王剑李牛上海交通大学医学院附属国际和平妇幼保健院上海200030 上海市胚胎源性疾病重点实验室上海200030

基因组DNA高通量测序技术大幅提升了罕见病的诊断效率,但目前仍有部分患者未能确诊。近年来转录组、蛋白质组、代谢组和脂质组、表观遗传组等多种检测技术逐步应用于临床,使得基于多组学手段综合诊断罕见病患者成为可能。另一方面,伴随... 详细信息

基因组DNA高通量测序技术大幅提升了罕见病的诊断效率,但目前仍有部分患者未能确诊。近年来转录组、蛋白质组、代谢组和脂质组、表观遗传组等多种检测技术逐步应用于临床,使得基于多组学手段综合诊断罕见病患者成为可能。另一方面,伴随确诊病例的增加,如何有效整合患者临床资料、搭建罕见病数据库以满足高质量研究型患者队列建设需求已成为世界各国政府愈来愈重视的课题。更重要的是,整合了多组学信息大数据模型的开发可促进人工智能和机器学习在罕见病研究中的应用,这将助力罕见病患者的临床评估和精准分型等,并有效提升基因治疗等创新诊疗技术的研发效率。罕见病研究已迈入数字医学时代,这也是更高水平地满足患者精准诊断和个体化治疗的现实需要。

关键词：罕见病多组学技术数据库建设诊断与治疗数字医学