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A healable, mechanically robust and ultrastretchable ionic conductive elastomer for durably wearable sensor

Nano Research 2024年第4期17卷 3369-3378页

作者： Guoxian Zhang Chunmei Li JiaoJun Tan Mingqi Wang Yafeng Ren Feijie Ge Qiuyu Zhang Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'an 710072China College of Bioresources Chemical and Materials Engineering National Demonstration Center for Experimental Light Chemistry Engineering EducationShaanxi University of Science&TechnologyXi’an 710021China

The ionic conductive elastomers show great promise in multifunctional wearable electronics,but they currently suffer from liquid leakage/evaporation or mechanical *** ionic conductive elastomers integrating non-volatility,mechanical robustness,superior ionic conductivity,and ultra-stretchability remains urgent and ***,we developed a healable,robust,and conductive elastomer via impregnating free ionic liquids(ILs)into the ILs-multigrafted poly(urethane-urea)(PUU)elastomer networks.A crucial strategy in the molecular design is that imidazolium cations are largely introduced by double-modification of PUU and centipede-like structures are obtained,which can lock the impregnated ILs through strong ionic *** this system,the PUU matrix contributes outstanding mechanical properties,while the hydrogen bonds and ionic interactions endow the elastomer with self-healing ability,conductivity,as well as non-volatility and *** fabricated ionic conductive elastomers show good conductivity(3.8×10^(-6) S·cm^(-1)),high mechanical properties,including tensile stress(4.64 MPa),elongation(1470%),and excellent healing ability(repairing efficiency of 90%after healing at room temperature for 12.h).Significantly,the conductive elastomers have excellent antifatigue properties,and demonstrate a highly reproducible response after 1000 uninterrupted extension-release *** work provides a promising strategy to prepare ionic conductive elastomers with excellent mechanical properties and stable sensing capacity,and further promote the development of mechanically adaptable intelligent sensors.

关键词： ionic conductive elastomers poly(urethane-urea)(PUU) ionic interactions centipede-like self-healing

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High mechanical strength Si anode synthesis with interlayer bonded expanded graphite structure for lithium-ion batteries

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Journal of Energy Chemistry 2024年第6期93卷 253-263,I0007页

作者： Wenhui Lai Jong Hak Lee Lu Shi Yuqing Liu Yanhui Pu Yong Kang Ong Carlos Limpo Ting Xiong Yifan Rao Chorng Haur Sow Barbaros Ozyilmaz Department of Material Science&Engineering National University of SingaporeSingapore 117575Singapore center for Advanced 2. Materials National University of SingaporeSingapore 117546Singapore Department of Physics National University of SingaporeSingapore 117551Singapore Institute forFunctional Intelligent Materials National University of SingaporeSingapore 117544Singapore

Despite advancements in silicon-based anodes for high-capacity lithium-ion batteries,their widespread commercial adoption is still hindered by significant volume expansion during cycling,especially at high active mass loadings crucial for practical *** root of these challenges lies in the mechanical instability of the material,which subsequently leads to the structural failure of the ***,we present a novel synthesis of a composite combining expanded graphite and silicon *** composite features a unique interlayer-bonded graphite structure,achieved through the application of a modified spark plasma sintering ***,this innovative structure not only facilitates efficient ion and electron transport but also provides exceptional mechanical strength(Vickers hardness:up to658 MPa,Young's modulus:11.6 GPa).This strength effectively accommodates silicon expansion,resulting in an impressive areal capacity of 2.9 mA h cm^(-2.(736 mA h g^(-1)) and a steady cycle life(93% after 100cycles).Such outsta nding performance is paired with features appropriate for large-scale industrial production of silicon batteries,such as active mass loading of at least 3.9 mg cm^(-2.,a high-tap density electrode material of 1.68 g cm^(-3)(secondary clusters:1.12.g cm^(-3)),and a production yield of up to 1 kg per day.

关键词： Lithium-ion battery Silicon anode Spark plasma sintering Interlayer bonding Mechanical strength Tap density

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High-performance GaSb planar PN junction detector

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Journal of Semiconductors 2024年第9期45卷 48-52页

作者： Yuanzhi Cui Hongyue Hao Shihao Zhang Shuo Wang Jing Zhang Yifan Shan Ruoyu Xie Xiaoyu Wang Chuang Wang Mengchen Liu Dongwei Jiang Yingqiang Xu Guowei Wang Donghai Wu Zhichuan Niu Derang Cao College of Physics National Demonstration Center for Experimental Applied Physics EducationQingdao UniversityQingdao 266071China Key Laboratory of Optoelectronic Materials and Devices Chinese Academy of SciencesBeijing 100083China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

This paper examines GaSb short-wavelength infrared detectors employing planar PN junctions. The fabrication was based on the Zn diffusion process and the diffusion temperature was optimized. Characterization revealed a 50% cut-off wavelength of 1.73 μm, a maximum detectivity of 8.73 × 10^(10) cm·Hz^(1/2./W, and a minimum dark current density of 1.02.× 10^(-5) A/cm^(2..Additionally, a maximum quantum efficiency of 60.3% was achieved. Subsequent optimization of fabrication enabled the realization of a 32. × 2.6 focal plane array that exhibited satisfactory imaging results. Remarkably, the GaSb planar detectors demonstrated potential in low-cost short wavelength infrared imaging, without requiring material epitaxy or deposition.

关键词： antimonide short-wave infrared planar junction zinc diffusion

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Controllable Exciton Diffusion Length and Ultrafast Charge Generation in Ternary Organic Solar Cells

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Chinese Journal of Chemistry 2024年第11期42卷 1275-1283页

作者： Sixuan Cheng Jiawei Qiao Peng Lu Wei Qin Xiaotao Hao School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinanShandong250100 China School of Physics National Demonstration Center for Experimental Physics EducationShandong UniversityJinanShandong250100 China ARC Centre of Excellence in Exciton Science School of ChemistryThe University of MelbourneParkvilleVictoria3010 Australia

Charge generation,a critical process in the operation of organic solar cell(OSC),requires thorough investigation in an ultrafast *** work demonstrates that the utilization of alloy model for the non-fullerene acceptor(NFA)component can regulate the crystallization properties of active layer films,which in turn affects exciton diffusion and hole transfer(HT),ultimately influencing the charge generation *** incorporating BTP-eC7 as a third component,without expanding absorption range or changing molecular energy levels but regulating the ultrafast exciton diffusion and HT processes,the power conversion efficiency(PCE)of the optimized PM6:BTP-eC9:BTP-eC7 based ternary OSC is improved from 17.30%to 17.83%,primarily due to the enhancement of short-circuit current density(JSC).Additionally,the introduction of BTP-eC7 also reduces the trap state density in the photoactive layer which helps to reduce the loss of *** study introduces a novel approach for employing ternary alloy models by incorporating dual acceptors with similar structures,and elucidates the underlying mechanism of charge generation and JSC in ternary OSCs.

关键词： Organic photovoltaics Ternary strategy Exciton diffusion Hole transfer Trap state Kinetics Alloys Photophysics

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Variations of sediment organic phosphorus and organic carbon during the outbreak and decline of algal blooms in Lake Taihu,China

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Journal of Environmental Sciences 2024年第5期139卷 34-45页

作者： Jiehua Wang Xiuling Bai Wenchao Li Pingping Zhang Mengdi Zhang Haoran Wang Yingge Bai College of Geography and Environmental Science Henan UniversityKaifeng 475004China Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions(Henan University) Ministry of EducationKaifeng 475004China national demonstration {2. for Environment and Planning Henan UniversityKaifeng 475004China Surrey International Institute Dongbei University of Finance and EconomicsDalian 116000China

In this study,sediment organic phosphorus(OP)and organic carbon(OC)in Lake Taihu,China,as well as their relationships,were analyzed during the outbreak and decline of algal blooms(ABs)over a five-month field *** results showed synchronous temporal changes in the sediment OP and OC contents with the development of *** addition,there was a significant positive correlation between the sediment OP and OC(p<0.01),suggesting simultaneous deposition and consumption during the ABs *** sediment OP and OC contents decreased significantly at the early and last stages of the ABs outbreak and increased at the peak of the ABs outbreak and during the ABs *** temporal variation patterns suggest that the sediment OC and OP contents did not consistently increase during the ABs outbreak,even though algae are an important source of organic matter in *** depletion or enrichment of OC and OP in sediments may also depend on the scale of the ABs *** obtained results revealed significant differences in the sediment OC and OP contents between the months(p<0.05).In addition,OP in the sediments was dominated by orthophosphate diester(phospholipids and DNA-P)and orthophosphate monoester during the ABs outbreak and decline,*** active OC contents and proportions in the sediments in the ABs outbreak were significantly lower than those observed in the ABs decline period,demonstrating the significant impacts of the ABs outbreak and decline on the sediment OC and OP in Lake Taihu.

关键词： Algal blooms Organic phosphorus Organic carbon Sediment ^(31)P NMR Lake Taihu

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Development and validation of a novel non-invasive test for diagnosing nonalcoholic fatty liver disease in Chinese children

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World Journal of Pediatrics 2024年第4期20卷 413-421页

作者： Zhe-Wen Qin Qian-Nan Ren Hong-Xi Zhang Ya-Ru Liu Ke Huang Wei Wu Guan-Ping Dong Yan Ni Jun-Fen Fu Division of Endocrinology National Clinical Research Center for Child HealthNational Children’s Regional Medical CenterThe Children’s HospitalDepartment of EndocrinologyNational Clinical Research Center for Child HealthNational Children’s Regional Medical CenterThe Children’s HospitalZhejiang University School of MedicineHangzhou310052China

With the exploding prevalence of obesity,many children are at risk of developing nonalcoholic fatty liver *** anthropometric and laboratory parameters,our study aimed to develop a model to quantitatively evaluate liver fat content(LFC)in children with *** A well-characterized cohort of 181 children between 5 and 16 years of age were recruited to the study in the Endocrinology Department as the derivation *** external validation cohort comprised 77 *** assessment of liver fat content was performed using proton magnetic resonance *** and laboratory metrics were measured in all subjects.B-ultrasound examination was carried out in the external validation *** Kruskal-Wallis test,Spearman bivariate correlation analyses,univariable linear regressions and multivariable linear regression were used to build the optimal predictive *** The model was based on indicators including alanine aminotransferase,homeostasis model assessment of insulin resistance,triglycerides,waist circumference and Tanner *** adjusted R^(2.of the model was 0.589,which presented high sensitivity and specificity both in internal[sensitivity of 0.82.,specificity of 0.900,area under curve(AUC)of 0.900 with a 95%confidence interval:0.783–1.000]and external validation(sensitivity of 0.918 and specificity of 0.82.,AUC of 0.901 with a 95%confidence interval:0.818–0.984).Conclusions Our model based on five clinical indicators was simple,non-invasive,and inexpensive;it had high sensitivity and specificity in predicting LFC in ***,it may be useful for identifying children with obesity who are at risk for developing nonalcoholic fatty liver disease.

关键词： Biochemical markers Children Magnetic resonance spectroscopy Nonalcoholic fatty liver disease Pediatric obesity

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Exposure to microplastics induces lower survival,oxidative stress,disordered microbiota and altered metabolism in the intestines of grass carp(Ctenopharyngodon idella)

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Aquaculture and Fisheries 2024年第5期9卷 785-794页

作者： Xuewen Jia Yang Liu Yan He Hongyan Yu Yuting Liu Yubang Shen Xiaoyan Xu Jiale Li Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of Agriculture and Rural Affairs Shanghai Ocean UniversityShanghai201306China national demonstration {2. for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai201306China Shanghai Engineering Research center of Aquaculture Shanghai Ocean UniversityShanghai201306China

There are major gaps in illustrating the risk to freshwater fish that are exposed to environmental microplastics(MPs),even though MPs in freshwater environments has drawn much *** explore the potentially negative effects of microplastics on freshwater fish,grass carp(averaging 9.2.5±0.035g)were exposed to microplastics(32.40μm in diameter)at two environmental concentrations(100 and 1000μg/L)for 2. days,and evaluated for physio-biochemical performance,gut microbiome,and metabolome *** exposure,microplastics were detected in the intestine and within basal nuclei and goblet cells *** enzyme activities(superoxide dismutase and catalase)also significantly decreased within the intestines(P<0.05).Through 16S rRNA gene sequencing analysis,a decrease in diversity and richness was observed in the MPs-H and MPs-L *** abundance of opportunistic pathogens increased and beneficial bacteria decreased in both MP *** example,Acinetobacter and Bosea proportions were higher in the MPs-L group,while Bacteroides and Shewanella increased in the MPs-H ***,abundance of Lactobacillus decreased both in the MPs-H and MPs-L *** analysis revealed primary bile acid biosynthesis metabolism upregulated in the MPs-L and purine metabolism downregulated in the MPs-H ***,an integration analysis of the gut microbiome and metabolomics identified significant associations between several bacteria taxa and metabolites related to intestinal *** together,these results highlighted the negative effects on intestinal morphology,oxidative stress,and microbiome and emphasized the relationship between microbiota and metabolites in response to microplastics,which could provide comprehensive insights into the potential risks of MPs on freshwater fish intestines.

关键词： Microplastics Oxidative stress Metabolomics Microbiome Grass carp Intestine

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A stepwise-responsive editor integrated with three copper ions for the treatment of oral squamous cell carcinoma

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Nano Research 2024年第6期17卷 5424-5434页

作者： Jinna Ren Jingying Hu Fan Dong Yan Xu Yang Peng Yuping Qian Guanmeng Zhang Min Wang Yuguang Wang Department of Prosthodontics Hospital of StomatologyJilin UniversityChangchun 130021China Department of General Dentistry II Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China center of Digital Dentistry Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China Department of Nursing Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijing 100081China The VIP Department School and Hospital of StomatologyChina Medical UniversityLiaoning Provincial Key Laboratory of Oral DiseasesShenyang 110002China

Cuprotosis,a new type of cell death,provides great opportunities for the treatment of oral squamous cell carcinoma,as nanocarriers of copper ions can induce cuprotosis and immunogenic ***,we studied an editor that enables production of a nanoparticle“storm”in oral squamous cell carcinoma,maximizing the toxic effect of these particles and reprogramming the tumor microenvironment;as a result,T cells and natural killer(NK)cells can infiltrate the tumor microenvironment to activate an antitumor immune *** this basis,the editor can be combined with optical therapy to improve patient *** this study,the metal ratio was regulated in response to the nanocarrier of acid response ***,in the presence of a specific copper ion content,the nanocarrier could change the permeability of the tumor cell *** on these results,the nanoparticles were cracked in an acidic environment and then released copper ***,the nanoparticles contributed to cuprotosis and immunogenic *** addition,the editor could inhibit murine oral cancer 1(MOC1)tumors in C57BL/6 without *** rate of tumor growth inhibition was as high as approximately 80%.This strategy provides a new idea for ***,it can improve the interaction between immunotherapy and the copper-induced death of oral squamous cell *** all,this study will provide a new opportunity for the effective treatment of oral squamous cell carcinoma.

关键词： cuprotosis immunogenic death photothermal therapy tumor microenvironment immunotherapy

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Flexible mille-feuille structure electromagnetic interference shielding film with excellent thermal conductivity and Joule heating

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Nano Research 2024年第5期17卷 4544-4554页

作者： Dingwen Yin Huijuan Xiu Simin Wang Yanfei Pan Na Li Rui Cheng Shaoyan Huang Sha Fan Jinbao Li College of Bioresources Chemical&Materials Engineering Shaanxi University of Science&TechnologyXi'an 710021China national demonstration {2. for Experimental Light Chemistry Engineering Education Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper DevelopmentXi'an 710021China College of Material Science and Art Design Inner Mongolia Agricultural UniversityHohhot 010018China

The intelligent electronic devices have urgent demands for electromagnetic interference(EMI)shielding films with excellent heat dissipation ***,it is challenging to obtain excellent EMI shielding and thermal conductivity performances ***,inspired by mille-feuille structure,the multifunctional EMI shielding films developed by a layer-by-layer self-assembly and hot-pressing *** ingenious introduction of silver nanoparticles(AgNPs)with large specific surface area and highly conductive into the network formed by TEMPO-oxidized cellulose nanofibrils(TOCNFs)with large aspect ratio to form the TOCNFs/*** the graphene nanoplates(GNPs)with high conductivity loss distributed alternately with TOCNFs/AgNPs to construct mille-feuille structure,which had highly efficient conductive network,complete thermally conduction pathway and rich heterogeneous ***,the designed films presented high electrical conductivity of 852. S/cm,superb EMI effectiveness(SE)of 98.05 dB,and excellent thermal conductivity of 18.82.W/(m·K).Furthermore,the films possessed outstanding Joule heating performances with low voltages,including high heating temperature(100℃),fast response time(2. s),and impressive heating stability and ***,such high-performance EMI shielding films with fascinating thermal conductivity and Joule heating performances have substantial application in flexible electronics,electromagnetic waves shielding and thermal management.

关键词： TEMPO-oxidized cellulose nanofibrils/silver nanoparticles(TOCNFs/AgNPs) mille-feuille structure electromagnetic interference shielding thermal conductivity Joule heating

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Incidence and Mortality of Cancers in Female Genital Organs—China,2.2.

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China CDC weekly 2024年第10期6卷 195-202,I0003,I0004页

作者： Kexin Sun Bingfeng Han Hongmei Zeng Shaoming Wang Li Li Ru Chen Rongshou Zheng Wenqiang Wei national Central Cancer Registry National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Introduction:This study presented the incidence and mortality rates of cancers affecting the female genital organs in China,along with their trends spanning from 2.10 to ***:700 population-based cancer registries provided relevant cancer incidence and mortality data for the year *** these,106 registries had continuous monitoring data suitable for trend analysis from 2.10 to *** focused specifically on cancers affecting female genital organs(ICD10=C51-C54,C56)and projected their incidences and mortalities in China for 2.2. based on data from 2.18 and the trends observed from 2.10 to ***-standardized incidence rate(ASIR)and mortality rate(ASMR)were calculated using Segi’s world standard ***:In 2.2.,there were an estimated 2.6,300 new cases and 104,900 deaths from female cancers in *** for vulva(C51),vagina(C52.,cervix uteri(C53),corpus uteri(C54),and ovary(C56)were 0.32.0.2.,13.83,6.84,and 5.68 per 100,000 *** for corpus uteri and ovary cancers were higher in urban *** for vulva,vagina,cervix,corpus uteri,and ovary cancers were 0.14,0.08,4.54,1.05,and 2.64 per 100,000 population,*** for ovarian cancer was higher in urban *** and ASMRs for most female genital organ cancers increased from 2.10 to 2.18,although the rate of increase for vulvar and cervical cancers in rural areas has slowed ***:Tailored cancer prevention and control programs specific to each region are necessary to address the growing disease burden.

关键词： ICD10 mortality organs

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