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Nano Research 2024年第3期17卷 1837-1855页

作者： Jialin Wang Kai Zhao Changqing Ye Yanlin Song School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190China

The booming development of wearable devices has aroused increasing interests in flexible and stretchable *** mechanosensory functionality,these devices are highly desirable on account of their wide range of applications in electronic skin,personal healthcare,human–machine interfaces and ***,they are mostly limited by single electrical signal feedback,restricting their diverse applications in visualized mechanical *** by the mechanochromism of structural color materials,interactively stretchable electronics with optical and electrical dual-signal feedbacks are recently emerged as novel sensory platforms,by combining both of their sensing mechanisms and ***,recent studies on interactively stretchable electronics based on structural color materials are *** a brief introduction of their basic components(i.e.,stretchable electronics and mechanochromic structural color materials),two types of interactively stretchable electronics with respect to the nanostructures of mechanochromic materials are outlined,focusing primarily on their design considerations and fabrication ***,the main challenges and future perspectives of these emerging devices are discussed.

关键词： stretchable electronics structural color materials interactive sensing mechanochromism dual-signal feedbacks

Alleviative effects of Bacillus coagulans strains on irritable bowel syndrome-unraveling strain specificity through physiological and genomic analysis

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Food Science and Human Wellness 2024年第4期13卷 1845-1855页

作者： Jiang Cao Leilei Yu Jianxin Zhao Hao Zhang Wei Chen Yuzheng Xue Qixiao Zhai State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China Wuxi Translational Medicine Research Center and jiangsu Translational Medicine Research Institute Wuxi Branch Wuxi 214122China Department of Gastroenterology Affiliated Hospital of Jiangnan UniversityWuxi 214122China

The high intraspecies heterogeneity of Baciillus coagulans leads to significant phenotypic differences among different ***,6 *** strains were tested in the present study using an irritable bowel syndrome(IBS)animal model to determine whether the IBS-alleviating effects of *** strains are *** results of this study showed that the ingestion of *** GBI-30,6086,and *** CCFM1041 significantly alleviated IBS symptoms in *** contrast,other *** strains showed no or limited alleviating effects on IBS *** to our experimental results,the two main common features of these strains were as follows:1)The resistance of vegetative cells to bile salts,and 2)ability to synthesize specific lipids and secondary *** strains based on these two indicators may greatly reduce costs and provide a basis for mining new functional *** *** results also suggest that administration of *** could significantly regulate microbiota dysbiosis in animal ***,the close relationships between the gut microbiota,gut microbiota metabolites,and IBS were further confirmed in this study.

关键词： Baciillus coagulans Irritable bowel syndrome Resistance to bile salts Comparative genomic analysis Gut microbiota

Recent advances in photoelectrochemistry-coupled dual-modal biosensors:From constructions to biosensing applications

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Nano Research 2024年第6期17卷 5512-5528页

作者： Yuxiang Dong Weisa Wang Changqing Ye Yanlin Song School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190Chin

Precise and sensitive bioanalysis has been the major and urgent pursuit in pathologic diagnosis,food safety,environment monitoring,and drug ***(PEC)bioanalysis,as one of the most promising detection technologies,has rapidly expanded within the field of ***,most of reported PEC analysis approaches still suffer from weak external anti-interference ability,high background,and the risk of false positive or negative errors due to their inherent single-signal *** overcome these shortcomings,new PEC-coupled dual-modal analysis approaches have been developed,where a dual-response signal can be derived through two completely different mechanisms and independent signal transduction *** review introduces the basic principles of PEC biosensing and enumerates and classifies the substrate or probe selections,constructions,and applications of PEC-coupled dual-modal ***,the challenges and developmental prospects of PEC-coupled dual-mode sensing technologies are evaluated and *** hope that this review will provide valuable insights into the latest advancements and practical applications of dual-mode PEC bioanalysis,which will be of great interest to those seeking to stay informed in this field.

关键词： photoelectrochemistry biosensor electrochemistry colorimetry electrochemiluminescence fluorescence dual-mode detection

highly elastic energy storage device based on intrinsically super-stretchable polymer lithium-ion conductor with high conductivity

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Fundamental Research 2024年第1期4卷 140-146页

作者： Shi Wang Jixin He Qiange Li Yu Wang Chongyang Liu Tao Cheng Wen-Yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&Telecommunications9 Wenyuan RoadNanjing 210023China Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi'an 710072China

Stretchable power sources,especially stretchable lithium-ion batteries(LIBs),have attracted increasing attention due to their enormous prospects for powering flexible/wearable *** recent advances,it is still challenging to develop ultra-stretchable LIBs that can withstand large *** particular,stretchable LIBs require an elastic electrolyte as a basic component,while the conductivity of most elastic electrolytes drops sharply during deformation,especially during large *** is why highly stretchable LIBs have not yet been realized until *** a proof of concept,a super-stretchable LIB with strain up to 1200%is created based on an intrinsically super-stretchable polymer electrolyte as the lithium-ion *** super-stretchable conductive system is constructed by an effective diblock copolymerization strategy via photocuring of vinyl functionalized 2-ureido-4-pyrimidone(VFUpy),an acrylic monomer containing succinonitrile and a lithium salt,achieving high ionic conductivity(3.5×10^(-4)mS cm^(-1)at room temperature(RT))and large deformation(the strain can reach 4560%).The acrylic elastomer containing Li-ion conductive domains can strongly increase the compatibility between the neighboring elastic networks,resulting in high ionic conductivity under ultra-large deformation,while VFUpy increases elasticity modulus(over three times)and electrochemical stability(voltage window reaches 5.3 V)of the prepared polymer *** a strain of up to 1200%,the resulting stretchable LIBs are still sufficient to power *** study sheds light on the design and development of high-performance intrinsically super-stretchable materials for the advancement of highly elastic energy storage devices for powering flexible/wearable electronics that can endure large deformation.

关键词： Stretchable electronics Flexible electronics Flexible energy storage devices Stretchable lithium-ion conductors Flexible lithium-ion batteries

Molten salt synthesis of α-MnO_(2)/Mn_(2)O_(3) nanocomposite as a high-performance cathode material for aqueous zinc-ion batteries

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Journal of Energy Chemistry 2021年第3期30卷 475-481页

作者： Aixiang Huang Weijun Zhou Anran Wang Minfeng Chen Qinghua Tian Jizhang Chen College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037JiangsuChina Department of Chemistry School of SciencesZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037JiangsuChina

Thanks to low cost,high safety,and large energy density,aqueous zinc-ion batteries have attracted tremendous interest ***,it remains a challenge to develop high-performance cathode materials with an appropriate method that is easy to realize massive ***,we use a molten salt method to synthesize nanostructured manganese *** crystalline phases of the manganese oxides can be tuned by changing the amount of reduced graphene oxide added to the reactant *** is found that the α-MnO_(2)/Mn_(2)O_(3) nanocomposite with the largest mass ratio of Mn_(2)O_(3) delivers the best electrochemical performances among all the *** its rate capability and cyclability can be significantly improved by modifying the Zn anode with carbon black coating and nanocellulose *** this situation,the nanocomposite can deliver high discharging capacities of 322.1 and 213.6 mAh g^(-1) at 0.2 and 3 Ag^(-1),*** 1000 cycles,it can retain 86.2% of the capacity at the 2 nd ***,this nanocomposite holds great promise for practical applications.

关键词： Manganese oxides Molten salt synthesis Nanostructured composites Aqueous batteries Zinc ion storage

Ultrathin Zn-free anode based on Ti_(3)C_(2)T_(x) and nanocellulose enabling high-durability aqueous hybrid Zn-Na battery with Zn2+/Na+co-intercalation mechanism

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Nano Research 2023年第1期16卷 536-544页

作者： Hao Chen Weijun Zhou Minfeng Chen Qinghua Tian Xiang Han Jizhang Chen College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang province Department of ChemistryZhejiang Sci-Tech UniversityHangzhou 310018China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China

With low cost and high safety,aqueous zinc-based batteries have received considerable ***,the excess utilization of zinc metal in the anodes of these batteries reduces energy density and increases ***,an ultrathin electrode of approximately 6.2μm thick is constructed by coating Ti_(3)C_(2)T_(x)/nanocellulose hybrid onto a stainless steel *** electrode is used as the Zn-free anode for aqueous hybrid Zn-Na battery,in which,a concentrated electrolyte is used to improve electrochemical *** Ti_(3)C_(2)T_(x)/nanocellulose coating is found to improve the electrolyte wettability,facilitate desolvation process of hydrated Zn^(2+) ions,lower nucleation overpotential,improve zinc plating kinetics,guide horizontal zinc plating along the Zn(002)facet,and inhibit parasitic side *** is also found that the Na_(3)V_(2)(PO_(4))_(3) cathode material adopts a highly reversible Zn^(2+)/Na^(+)co-intercalation charge storage mechanism in this *** to these benefits,the assembled hybrid Zn-Na battery exhibits excellent rate capability,superior cyclability,and good anti-freezing *** work provides a new concept of electrode design for electrochemical energy storage.

关键词： MXene-based composites ultrathin electrodes electrode surface coatings aqueous hybrid batteries co-intercalation charge storage mechanisms

Optimizing the electrolyte salt of aqueous zinc-ion batteries based on a high-performance calcium vanadate hydrate cathode material

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Journal of Energy Chemistry 2021年第1期30卷 377-384,I0012页

作者： Weijun Zhou Minfeng Chen Anran Wang Aixiang Huang Jizhang Chen Xinwu Xu Ching-Ping Wong College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037JiangsuChina School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaUnited States

It is urgent to develop high-performance cathode materials for the emerging aqueous zinc-ion batteries with a facile strategy and optimize the related ***,a Ca0.23V2O5·0.95 H2O nanobelt cathode material with a rather large interlayer spacing of 13.0 A is prepared via a one-step hydrothermal *** battery with this cathode material and 3 M Zn(CF3SO3)2 electrolyte displays high specific capacity(355.2 mAh g^(-1) at 0.2 A g^(-1)),great rate capability(240.8 mAh g^(-1) at 5 A g^(-1)),and excellent cyclability(97.7% capacity retention over 2000 cycles).Such superior performances are ascribed to fast electrochemical kinetics,outstanding electrode/electrolyte interface stability,and nearly dendrite-free ***,when ZnSO4 or Zn(ClO4)2 is used to replace Zn(CF3SO3)2,the electrochemical performances become much inferior,due to the slow electrochemical kinetics,inhomogeneous Zn stripping/plating process,and the formation of large dendrites and *** work not only discloses a high-performance cathode material for aqueous zinc-ion batteries but also offers a reference for the choice of electrolyte salt.

关键词： Calcium vanadate hydrates Electrolytes Interfacial stability Zn-ion batteries Aqueous energy storage

Enhancement of heat transfer of microcapsulated particles using copper particles and copper foam

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Particuology 2018年第6期16卷 85-93页

作者： Zhonghao Rao Yiping Wen Chenzhen Liu School of Electrical and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The application of phase-change materials (PCM)for thermal-energy storage is hampered by their low thermal *** particles (CP)and copper foam (CF)were used to enhance the thermal conductivity of a microencapsulated phase-change material (MicroPCM).The effects of the CP size and mass fraction and the pore number per inch (PPI)of the CF on the thermal properties of the MicroPCM were *** chemical and microstructures of the MicroPCM and its CP composites were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy,respectively. Their thermal conductivities,phase-change temperatures,and latent heats were *** CP into the MicroPCM decreased the latent heats with increasing *** thermal conductivities of MicroPCM/CP (Swt%,50nm diameter)and MicroPCM/CF (PPI 30)were 1.12times and 3.46times that of the unmodified MicroPCM at 20℃,***-energy storage performances of the MicroPCM/CF composites were studied at a power of 2.9±*** temperature of the contact surfaces of the pure MicroPCM and its composites (PPI 10,PPI 20,PPI 30)was 75.88,51.27,50.52,and 50.23℃,*** composites displayed more uniform temperature distributions.

关键词： Microencapsulated phase-change material Copper particles Copper foam Thermal conductivity Thermal energy storage

Simulation of stochastic wind field for large complex structures based on modified Fourier spectrum

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第3期12卷 238-246页

作者： Zhao-dong XU Key Laboratory of C & PC Structures of the Ministry of Education Southeast University Nanjing 210096 China) Civil Engineering College Southeast University Nanjing 210096 China

Simulation for stochastic wind field is very important in analyzing dynamic responses of large complex structures due to strong *** typical simulation method is the spectrum representation method (SRM),but the SRM has drawbacks of inferior precision in lower frequency and slow calculating *** view of this,the modified Fourier spectrum method (MFSM) is introduced into the simulation of stochastic wind field in this *** this method,phase information of wind velocity time history is determined by cross power spectral density (CPSD) between adjacent points,and the wind velocity time history with time and space correlation is generated by iterative modification for CPSD considering auto power spectral density (APSD).Simulation of the wind field for a long-span bridge is undertaken to verify the effectiveness of the *** results of the SRM and the MFSM are *** can be concluded that the MFSM is more accurate and has higher calculation speed than the SRM.

关键词： Modified Fourier spectrum Stochastic wind field Large complex structures Numerical simulation

Improving UV stability of perovskite solar cells without sacrificing efficiency through light trapping regulated spectral modification

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Science Bulletin 2021年第23期66卷 2362-2368页

作者： Kaimo Deng Qinghua Chen Ying Shen Liang Li School of Physical Science and Technology Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006China

The stability of perovskite solar cells is an important issue to be addressed for future *** solar cells are vulnerable to exposure to UV light due to promoted chemical ***, preventing UV light from entering solar cells lowers the power conversion efficiency by reducing the photocurrent. The challenge is to improve UV stability without sacrificing efficiency. Here, we demonstrate the reduction of UV light-related negative effects from the perspective of spectral modification. By simultaneously introducing UV–visible downshifting and light trapping, perovskite solar cells can achieve a comparable efficiency of over 21% to that of an unmodified device. The optimized device obtains increased UV stability due to UV–visible downshifting. Different from other strategies, spectral modification externally alters the composition of incident light and improves UV stability without changing the internal device architecture, which is broadly applicable to perovskite solar cells with different structures. The present work may also find applications in other types of solar cells to boost the stability of devices exposed to UV light.

关键词： UV stability Perovskite solar cells Downshifting Light trapping