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Continuous Preparation of Chitosan‑Based Self‑Powered Sensing Fibers Recycled from Wasted Materials for Smart Home Applications

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Advanced Fiber Materials 2022年第6期4卷 1584-1594页

作者： Yingying li chuanhui Wei Yang Jiang Renwei Cheng Yihan Zhang Chuan Ning Kai Dong Zhong lin Wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro‑Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400People’s Republic of China Center On Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Material Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332‑0245USA

Currently,the gradual depletion of fossil resources and the large amount of plastic waste are causing serious harm to the land and marine *** rapid development of wearable smart fibers is accompanied by rapid growth in the material demand for fibers,and the development of green and high-performance biomass-based fibers has become an important research topic to reduce the dependence on synthetic fiber materials and the harm to the ***,chitosan is first prepared from the waste material by chemical *** the chitosan-based self-powered induction fibers are prepared by electrospinning core wire ***-based self-powered sensing fiber is ultra-light and flexible,which can achieve about 2500 collisions without damaging the ***-based self-powered sensing fiber can also be used in smart home sensing applications to control home appliance switches with a light touch,which has a great application prospect in smart home and wearable fields.

关键词： Recycled wasted materials Chitosan nanofibers Electrospinning Self-powered sensing Smart home

The contribution of photoinduced charge-transfer enhancement to the SERS of uranyl(Ⅵ) in a uranyl-Ag_2O complex

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Science Bulletin 2019年第5期64卷 315-320页

作者： Shaofei Wang Shanli Yang Haoxi Wu Jiaolai Jiang Lang Shao Yiming Ren Yingru li chuanhui liang Mingfu Chu Xiaolin Wang Institute of Materials China Academy of Engineering Physics China Academy of Engineering Physics

Charge-transfer(CT) is an important enhancement mechanism in the field of surface-enhanced Raman scattering(SERS) that typically increases the Raman intensity of molecules by as much as 10–100 ***, a low-cost Ag_2O aggregates substrate was prepared via a facile chemical precipitation method,and the calculated CT-based enhancement factor of the uranyl ions adsorbed on it reached as high as 10~5, a metal-comparable value. The efficient photoinduced CT process from the valence band of Ag_2O to the LUMO of uranyl ions under appropriate excitation sources resulted in the repulsion of the axial oxygen atoms of the O=U=O bond, which enhanced its polarizability, creating a more intense Raman mode. To the best of our knowledge, this study firstly reports such a strong photoinduced CT enhancement of uranyl ions, with concentrations of 10^(-8) mol L^(-1) or lower being detected using this Ag_2O substrate. Most importantly, this research has shown that the photoinduced CT enhancement also contributes to the SERS of uranyl ions on pure Ag substrates which have often been ascribed to the electromagnetic enhancement in previous studies. In addition, Ag_2O can be used to selectively detect uranyl ions without interference from many other molecules or ions because of the energy matching rule of the photoinduced CT process, which was readily available for uranyl detection in the environmental aqueous solution.

关键词： Photoinduced charge-transfer Uranyl SERS Ag2O aggregates Trace analysis

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

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Materials Futures 2024年第2期3卷 131-140页

作者： Chuan Ning Shengxin Xiang Xiupeng Sun Xinya Zhao chuanhui Wei Lele li Guoqiang Zheng Kai Dong College of Materials Science and Engineering Key Laboratory of Material Processing and Mold(Ministry of Education)Zhengzhou UniversityZhengzhou 450001People’s Republic of China Key Laboratory of Materials Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001People’s Republic of China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China

Wearable electronics are advancing towards miniaturization and ***,traditional energy supply methods have largely hindered their *** effective solution to this problem is to convert human mechanical energy into electricity to power wearable electronic ***,it is greatly attractive to design flexible,foldable and even stretchable energy harvesting ***,we use the electrospinning and kirigami approach to develop a type of highly stretchable kirigami-patterned nanofiber-based triboelectric nanogenerator(K-TENG).Due to its innovative structural design,the K-TENG can achieve a tensile strain of 220%,independent of the tensile properties of the material *** a person swings their arms,the K-TENG fixed to the clothing can convert mechanical energy from human movement into electrical *** produced electricity can directly drive 50 LED lights and a digital watch,or be stored in a lithium battery to charge the smartwatch and smartphone,*** study employs a new method to fabricate a stretchable triboelectric nanogenerator and demonstrates its promising applications in wearable power technology.

关键词： stretchable triboelectric nanogenerators kirigami energy harvesting

Enhancing Defect-Induced Dipole Polarization Strategy of SiC@MoO_(3)Nanocomposite Towards Electromagnetic Wave Absorption

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Nano-Micro Letters 2024年第12期16卷 406-426页

作者： Ting Wang Wenxin Zhao Yukun Miao Anguo Cui chuanhui Gao Chang Wang liying Yuan Zhongning Tian Alan Meng Zhenjiang li Meng Zhang College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042People’s Republic of China College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042People’s Republic of China Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon-Materials College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061People’s Republic of China Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for life Science MOEShandong Key Laboratory of Biochemical AnalysisCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042People’s Republic of China

Defect engineering in transition metal oxides semiconductors(TMOs)is attracting considerable interest due to its potential to enhance conductivity by intentionally introducing defects that modulate the electronic structures of the ***,achieving a comprehensive understanding of the relationship between micro-structures and electromagnetic wave absorption capabilities remains elusive,posing a substantial challenge to the advancement of TMOs *** current research describes a process for the deposition of a MoO_(3)layer onto SiC nanowires,achieved via electro-deposition followed by high-temperature ***,intentional creation of oxygen vacancies within the MoO_(3)layer was carried out,facilitating the precise adjustment of electromagnetic properties to enhance the microwave absorption performance of the ***,the SiC@MO-t4 sample exhibited an excellent minimum reflection loss of-50.49 dB at a matching thickness of 1.27 ***,the SiC@MO-t6 sample exhibited an effective absorption bandwidth of 8.72 GHz with a thickness of 2.81 mm,comprehensively covering the entire Ku *** results not only highlight the pivotal role of defect engineering in the nuanced adjustment of electromagnetic properties but also provide valuable insight for the application of defect engineering methods in broadening the spectrum of electromagnetic wave absor ption ***@MO-t samples with varying concentrations of oxygen vacancies were prepared through in-situ etching of the SiC@MoO_(3)*** presence of oxygen vacancies plays a crucial role in adjusting the band gap and local electron distribution,which in turn enhances conductivity loss and induced polarization loss *** finding reveals a novel strategy for improving the absorption properties of electromagnetic waves through defect engineering.

关键词： Defect engineering Oxygen vacancies SiC@MoO_(3)nanocomposite Electromagnetic wave absorption Induced dipole polarization

Enhanced photothermal conversion in 3D stacked metal-organic framework nanosheets

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Aggregate 2024年第4期5卷 140-146页

作者： Shan Zhu chuanhui Huang Xiao li Xiangyu Chen Haochen Ye Zhenjie Xue Wenping Hu Tie Wang Tianjin Key Laboratory of Molecular Optoelectronic Science Department of ChemistrySchool of ScienceTianjin UniversityTianjinPeople’s Republic of China Tianjin Key Laboratory of life and Health Detection Life and Health Intelligent Research InstituteTianjin University of TechnologyTianjinPeople’s Republic of China Center for Advancing Electronics Dresden(Cfaed)and Faculty of Chemistry and Food Chemistry Technische Universität DresdenDresdenGermany Beijing National Laboratory for Molecular Sciences Key Laboratory of Analytical Chemistry for Living Biosystems Institute of ChemistryChinese Academy of SciencesBeijingPeople’s Republic of China

Incorporating metal nanoparticles(MNPs)in metal–organic frameworks(MOFs)demonstrated great potential in theﬁeld of photo-/***-ever,the oriented design and optimization of the 3D nano-architectures of MOF substrates to achieve high-efﬁciency light harvesting remains a ***,guided on theoretical simulation,a facile etching strategy was employed to fab-ricate a 3D orderly-stacked-MOF-nanosheet-structure(CASFZU-1)with a high electricﬁeld energy-density-distribution;well-dispersed MNPs were afterwards encapsulated onto the MOF *** unique nanosheet structure improved the light absorbance over the broadband spectrum,thereby enhancing the plasmonic photothermal effects of the MNPs@CASFZU-1 *** on the plasmon-driven photothermal conversion,the MNPs@CASFZU-1 composites exhibited approximately twofold catalytic efﬁciency in the hydrogenation reaction and a lower temperature for the full conversion of carbon monoxide,compared to their bulk-type *** surface-plasmon-driven photothermal effects can be exploited in innovative MNPs@MOF platforms for various applications.

关键词： heterogeneous catalysis metal–organic framework nanosheet-assembled structure photothermal effects

Comparative investigation of three types of ethanol sensor based on NiO-SnO_2 composite nanofibers

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Chinese Science Bulletin 2012年第17期57卷 2087-2093页

作者： SHEN RenSheng li XiangPing XIA XiaoChuan liANG HongWei WU GuoGuang liU Yang CHENG chuanhui DU GuoTong School of Physics and Optoelectronic Technology Dalian University of Technology Dalian 116024China State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

NiO-SnO2 composite nanofibers were synthesized via electrospinning techniques and characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and X-ray photoelectron *** types of sensor were applied to investigate the sensing properties of these *** A were fabricated by mixing the nanofibers with deionized water,and then grinding and coating them on ceramic tubes to form indirect heated gas *** B(with an area of 600 μm×200 μm) were formed by spinning nanofibers on Si substrates with Pt signal electrodes and Pt *** C were fabricated by spinning nanofibers on plane ceramic substrates(with a large area of 13.4 mm×7 mm) with Ag-Pd signal electrodes *** operating temperatures of sensors A and B were controlled by adjusting heater currents,and the operating temperatures of sensors C were controlled by adjusting an external temperature control *** results show that sensors C possess the highest sensing properties,such as high response values(about 42 to 100 μL/L ethanol),quick response/recovery speeds(the response and recovery times were 4 and 7 s,respectively),and excellent *** phenomena were explained by the retained fiber morphology and suitable sensor *** presented results can provide some useful information for the design and optimization of one-dimensional nanomaterial-based gas sensors.

关键词：复合纳米纤维乙醇传感器 SnO2 类型 NIO 温度控制装置 X射线光电子能谱扫描电子显微镜

An intelligent self-powered life jacket system integrating multiple triboelectric fiber sensors for drowning rescue

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InfoMat 2024年第5期6卷 96-109页

作者： Yiping Zhang Chengyu li chuanhui Wei Renwei Cheng Tianmei Lv Junpeng Wang Cong Zhao Zhaoyang Wang Fangming li Xiao Peng Minyi Xu Kai Dong CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of ScienceBeijingthe People's Republic of China Dalian Key Lab of Marine Micro/Nano Energy and Self-Powered Systems Marine Engineering CollegeDalian Maritime UniversityDalianthe People's Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijingthe People's Republic of China

The inherent unpredictability of the maritime environment leads to low rates of survival during *** jackets serve as a crucial safety measure in underwater ***,most conventional life jackets lack the capability to monitor the wearer's underwater body movements,impeding their effectiveness in rescue ***,we present an intelligent self-powered life jacket system(SPLJ)composed of a wireless body area sensing network,a set of deep learning analytics,and a human condition detection *** coaxial core-shell structure triboelectric fiber sensors with high sensitivity,stretchability,and flexibility are integrated into this ***-tionally,a portable integrated circuit module is incorporated into the SPLJ to facilitate real-time monitoring of the wearer's ***,by leveraging the deep-learning-assisted data analytics and establishing a robust correlation between the wearer's movements and condition,we have developed a comprehensive system for monitoring drowning individuals,achieving an outstanding recognition accuracy of 100%.This groundbreaking work intro-duces a fresh approach to underwater intelligent survival devices,offering promising prospects for advancing underwater smart wearable devices in rescue operations and the development of ocean industry.

关键词： deep learning intelligent life jackets movement recognition self-powered triboelectric fiber sensors

Defect-manipulated magnetoresistance and above-room-temperature ferromagnetism in two-dimensional BaNi_(2)V_(2)O_(8)

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Chinese Chemical Letters 2024年第3期35卷 523-527页

作者： Pengfei Tan chuanhui Zhu Jinjin Yang Shuang Zhao Tao Xia Mei-Huan Zhao Tao Han Zheng Deng Man-Rong li Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of ChemistrySun Yat-sen UniversityGuangzhou 510006China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Science Hainan UniversityHaikou 570228China

The intricate correlation between multiple degrees of freedom and physical properties is a fascinating area in solid state chemistry and condensed matter ***,we report a quantum-magnetic system BaNi_(2)V_(2)O_(8)(BNVO),in which the spin correlation was modulated by unusual oxidation state,leading to different magnetic *** BNVO was modified with topochemical reduction(TR)to yield TR-BNVO with partially reduced valance state of Ni^(+)in the two-dimensional NiO_(6)-honeycomb ***,the antiferromagnetic order is suppressed by the introduction of locally interposed Ni^(+)and oxygen vacancies,resulting in a ferromagnetic ground state with the transition temperature up to 710 K.A positive magnetoresistance(7.5%)was observed in the TR-BNVO at 40 K under 7 *** findings show that topological reduction is a powerful approach to engineer low-dimensional materials and accelerate the discovery of new quantum magnetism.

关键词： Layered honeycomb oxide Topochemical reduction Oxygen vacancies Ferromagnetism Magnetoresistance

The multiple faces of cGAS-STING in antitumor immunity:prospects and challenges

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Medical Review 2024年第3期4卷 173-191页

作者： Zheqi Zhou Sanling Huang Fangying Fan Yan Xu Casey Moore Sirui li chuanhui Han Peking University International Cancer Institute Peking University Cancer Hospital and InstituteHealth Science CenterPeking UniversityBeijingChina Department of Interventional Ultrasound Chinese PLA General HospitalBeijingChina Departments of Immunology PathologyUT Southwestern Medical CenterDallasTexasUSA Peking University International Cancer Institute Peking University Cancer Hospital and InstituteHealth Science CenterPeking UniversityBeijing 100143China Department of Genetics Lineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel HillChapel HillNC 27599USA

As a key sensor of double-stranded DNA(dsDNA),cyclic GMP-AMP synthase(cGAS)detects cytosolic dsDNA and initiates the synthesis of 2′3′cyclic GMP-AMP(cGAMP)that activates the stimulator of interferon genes(STING).This finally promotes the production of type I interferons(IFN-I)that is crucial for bridging innate and adaptive *** evidence show that several antitumor therapies,including radiotherapy(RT),chemotherapy,targeted therapies and immunotherapies,activate the cGAS-STING pathway to provoke the antitumor *** the last decade,the development of STING agonists has been a major focus in both basic research and the pharmaceutical ***,up to now,none of STING agonists have been approved for clinical *** the broad expression of STING in whole body and the direct lethal effect of STING agonists on immune cells in the draining lymph node(dLN),research on the optimal way to activate STING in tumor microenvironment(TME)appears to be a promising ***,besides enhancing IFN-I signaling,the cGAS-STING pathway also plays roles in senescence,autophagy,apoptosis,mitotic arrest,and DNA repair,contributing to tumor development and *** this review,we summarize the recent advances on cGAS-STING pathway’s response to antitumor therapies and the strategies involving this pathway for tumor treatment.

关键词： cGAS STING agonist IFN-I tumor