材料科学最新文献

{"title":"Ultra-sensitive, fast response microcapsule structure capacitive sensor with encapsulated columnar nano-ZnO for electronic skin","authors":"Jie Chen, Lizhu Guan, Minghui Xu, Tianyu Hu, Zhichao Pang, Dongming Shi, Weiyu Wang","doi":"10.1016/j.jallcom.2024.178245","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178245","url":null,"abstract":"The capacitive pressure sensor holds broad prospects in medical devices and electronic skins. However, challenges persist in enhancing the stability of its capacitance and its response/relaxation time. To tackle these issues, we have proposed a highly sensitive capacitive sensor based on polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) with a microcapsule structure coated with nano-ZnO. The sensor integrates a semiconductor filler within a porous microstructure, enabling it to be positioned within the matrix’s pores for the purpose of monitoring human health. This P(VDF-TrFE)-ZnO dielectric layer with a short rod-like ZnO particle-in-micropore (SRP-MP) structure effectively enhances the structural stability and capacitance change rate of the dielectric layer. It boasts an ultrahigh sensitivity of 3.1 kPa^-1, a broad pressure range of up to 50 kPa, an ultra-low relaxation response time of 23 ms, and the ability to detect an ultra-low minimum pressure of 50<!-- --> <!-- -->Pa. The sensor’s structural stability has been significantly improved, and it has demonstrated excellent fatigue resistance in 10,000 cycles tests. Following this, we delved into the sensor’s sensing mechanism. To elucidate the reasons behind the sensor’s enhanced performance, we modeled its interior and conducted finite element analysis simulations (COMSOL) to investigate its internal sensing mechanism and piezoelectric response. Finally, we conducted various tests on the sensor’s human application to clarify its performance in actual situations, demonstrating significant application potential.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"24 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Network structure and property evolution of GexAsySe1-x-y glasses: towards specialized functional glasses","authors":"Kelun Xia, Yongnian Guan, Guang Jia, Jierong Gu, Miaomiao Wu, Chenjie Gu, Rongping Wang, Zijun Liu, Xiang Shen","doi":"10.1016/j.jallcom.2024.178242","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178242","url":null,"abstract":"The structure and property evolution of Ge_xAs_ySe_1-x-y glasses was finely modelled for exploring specialized functional materials. Raman spectra described the network structure evolution induced by changes in the compositions. The bonding probabilities of Ge-Ge and As-As bonds are highly similar, as inferred from the observed broadening and shifting of their Raman characteristic peaks. Following this deduction, the chemical bond distributions of the GeAsSe glasses were calculated. Further, the cohesion energy and the mean bond energy were also calculated. The refractive index, glass transition temperature (T_g), coefficient of thermal expansion (CTE), thermo-optical coefficient (dn/dT) and Vickers hardness were all well modelled with mean coordination number (MCN). Refractive index transition was found around MCN = 2.6 for the compositions with variable Ge content and fixed As content. The slope of the increase in refractive index seems to have a transition at MCN = 2.4. These two transitions are correlated to the structural transitions of floppy to isostatically rigid and isostatically rigid to stress-rigid. Further, a series of molar refractivity and bond refractivity were computed by multiple linear regression. It will facilitate a quick evaluation of other GeAsSe glasses. Otherwise, higher T_g corresponds to compositions closer to standard stoichiometric ratio when MCN remains constant. Negative dn/dT was observed in compositions with larger CTE and smaller MCN (MCN &lt; 2.4). These detailed property evolution patterns and computational solutions will facilitate the investigation of specialized functional or tailored materials.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"76 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical Synthesis and Conductivity Fine Tuning of the 2D Iron-Quinoid Metal–Organic Framework","authors":"Huijie Wei, Faxiang Qin","doi":"10.1021/acsami.4c17699","DOIUrl":"https://doi.org/10.1021/acsami.4c17699","url":null,"abstract":"Electrically conducting 2D metal–organic frameworks (MOFs) with hexagonal 2D lattices like other 2D van der Waals stacked materials are attracting increasing interest. The conductivity can be effectively regulated through electronic structure adjustment thanks to the chemical and physical flexibility and adjustability of MOFs. In this regard, through a simple and rapid electrochemical method, 2D conductive iron-quinoid MOFs were synthesized. The conductivity of the obtained MOF film reached 1.7(7) S/m. With the increase of reaction time, the 2D network was oxidized partially, and the conductivity decreased down to 0.5(7) S/m. The DFT calculation results showed a narrow bandgap of the 2D crystal cell. Further quantum chemical calculations of the bimetal unit of the iron-quinoid MOF revealed the expansion of the bandgap as the 2D MOF network is gradually oxidized. This work proves the feasibility of fine-tuning macroscopic conductivity from an electronic structure. The combined organic and inorganic chemical structure of MOF materials provides a larger operating space for this fine regulation than that of pure inorganic materials. This conductive 2D iron-quinoid MOF film provides a new option for the development of novel microelectronic devices.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"90 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Nitrogen Annealing on Phase Evolution, Microstructure, and Electrical Properties of Mn0.76Fe0.87Co1.07Zn0.3O4 NTC Ceramic","authors":"Jun-Chang Wang, Chong Wang, Shuang-Jiang He, Xiao Zhang, Sen Liang","doi":"10.1016/j.jallcom.2024.178248","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178248","url":null,"abstract":"This study elucidated the mechanism underlying the differences in the stability of Mn_0.76Fe_0.87Co_1.07Zn_0.3O₄ spinel-type NTC thermistors induced by nitrogen annealing. Prolonged nitrogen annealing led to the precipitation of a secondary CoO phase and significant changes in the microstructure. Additionally, the annealing process reduced the concentration of high-valent cations (Mn⁴⁺, Co³⁺, and Fe³⁺). These structural and compositional changes resulted in substantial alterations in electrical properties, with resistivity (<em>ρ</em>_<em>25</em>) increasing from 5430 Ω·cm to 18304 Ω·cm, and the material constant (<em>B</em>_{<em>25/50</em>}) rising from 4023<!-- --> <!-- -->K to 4316<!-- --> <!-- -->K after 6<!-- --> <!-- -->hours of annealing. AC impedance analysis revealed that these shifts were primarily due to the increased grain boundary resistance (R_gb), which became more pronounced with extended annealing time. These findings provided both theoretical and experimental insights into the mechanisms governing the electrical stability and performance fluctuations of spinel-type NTC thermistors in high-temperature nitrogen environments, offering practical guidance for optimizing thermal stability in manufacturing and application processes.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twin nucleation at grain boundaries in Mg analyzed through in situ electron back-scatter diffraction and high-resolution digital image correlation","authors":"Maral Sarebanzadeh, Alberto Orozco-Caballero, Eugenia Nieto-Valeiras, Javier LLorca","doi":"10.1016/j.actamat.2024.120678","DOIUrl":"https://doi.org/10.1016/j.actamat.2024.120678","url":null,"abstract":"Nucleation of extension twins at grain boundaries in weakly textured pure Mg was investigated through <em>in situ</em> mechanical tests in combination with electron backscatter diffraction and high-resolution digital image correlation. The Mg alloy exhibited a weak basal texture in which the Schmid factor for twinning under tensile deformation was low (or even negative) in most grains. Over 150 twin nucleation events at grain boundaries were recorded and classified into different groups. The most important ones were single twin nucleation and twin co-nucleation at grain boundaries and triple junctions while the number of twin transfer events was very small. It was found that twin nucleation/co-nucleation began at large grains suitably oriented for basal slip and gradually occurred in smaller grains with lower basal SF as the applied deformation increased while the twinning SF was not able to predict extension twinning. Thus, basal slip leads to the creation of stress concentrations at the grain boundaries that trigger twin nucleation. The microstructural features that dictate each type of twin nucleation event were analyzed and provided novel information about the influence of the microstructure of twin variant selection in Mg. In particular, it was found that twin variant selection was dictated in many cases by the orientation of twin shear strain with respect to the grain boundaries and was independent of the twinning Schmid factor.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"15 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecularly Crowding Electrolytes and Tailored Electrodes for High-performance Aqueous Mn-Ion Hybrid Micro-supercapacitors","authors":"Junjie Shi, Ke Niu, Long Zhang, Ziqi Ren, Yixin Hou, Yang Yue, Li Wen, Yanan Ma, Qixiang Zhang, Zhihua Li, Jun Su, Yihua Gao","doi":"10.1016/j.nanoen.2024.110610","DOIUrl":"https://doi.org/10.1016/j.nanoen.2024.110610","url":null,"abstract":"Aqueous Mn−ion hybrid micro−supercapacitors (AMIHMSCs) are promising systems, which can greatly improve the energy density and power density of traditional aqueous micro supercapacitors. Unfortunately, the development of AMIHMSCs has been challenging due to the low redox potential and high chemical activity of Mn metal, as well as the low capacity and poor cycle life of electrode material resulting from Mn²⁺ with high charge density and large solvated ion radius. Herein, we report the first generation AMIHMSCs assembled with molecular crowding electrolytes, hydroxylated Ti₃C₂T_x MXene (H−Ti₃C₂ MXene) anode and Al_xV₂O₅ with dimethyl formamide molecules intercalation (AlVO−DMF) cathode. Benefiting from the wide electrochemical stability window and unique Mn²⁺ solvation structure in molecular crowding electrolytes, excellent capacitance of H−Ti₃C₂ MXene and enhanced structural stability of AlVO−DMF, the AMIHMSCs exhibit high energy density, power density and long cycle life. This work provides a pathway for designing high−performance AMIHMSCs.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"42 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laser damage mechanism of VO2/Al2O3 films and numerical simulation","authors":"Jingyao Zhang, Yinze Lei, Qianyi Li, Jing Xie, Junlin Yang, Haibo Jin, Pengwan Chen, Jingbo Li","doi":"10.1016/j.jallcom.2024.178132","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178132","url":null,"abstract":"Vanadium dioxide (VO<ce:inf loc=\"post\">2</ce:inf>) undergoes a metal-insulator transition at 68 °C, exhibiting high infrared transparency at low temperatures and high infrared reflectivity at high temperatures. The unique property makes VO<ce:inf loc=\"post\">2</ce:inf> a promising smart material for laser protection. However, there is limited research on laser damage behavior and laser prediction technology of VO<ce:inf loc=\"post\">2</ce:inf> films. In this work, the finite element simulation was conducted to study the evolution of temperature and thermal stress fields and the failure of VO<ce:inf loc=\"post\">2</ce:inf>/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> films under continuous-wave (CW) laser irradiation with thermo-mechanical coupling modeling. The simulated temperature field of irradiated VO<ce:inf loc=\"post\">2</ce:inf> films was validated through laser irradiation experiments with an infrared thermal imager. The laser damage behavior of VO<ce:inf loc=\"post\">2</ce:inf>/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> films was investigated through microstructure analysis and in-situ optical monitoring during CW laser irradiation. It was evidenced that thermal oxidation failure of the VO<ce:inf loc=\"post\">2</ce:inf> film and thermal stress fracture of the Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> substrate are the two main failure modes of VO<ce:inf loc=\"post\">2</ce:inf>/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> films under CW laser irradiation (35 W). The critical failure time and temperature for the thermal oxidation failure of VO<ce:inf loc=\"post\">2</ce:inf> films were determined by annealing experiments and used as the failure criteria for finite element simulation. The numerical simulation well predicts the laser damage of VO<ce:inf loc=\"post\">2</ce:inf>/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> films. This demonstrates a reliable approach to assist in the design of laser-protective materials and technology based on VO<ce:inf loc=\"post\">2</ce:inf>.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"31 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of silver-coated polystyrene microspheres intermediated with polyaniline and their application in array-patterned anisotropic conductive films","authors":"Changxiang Hao,&nbsp;Junde Chen,&nbsp;Yonghao Chen,&nbsp;Chengwei Jiang,&nbsp;Ziqiang Wang,&nbsp;Tingting Pan,&nbsp;Xing Cheng,&nbsp;Yanqing Tian","doi":"10.1007/s42114-024-01160-6","DOIUrl":"10.1007/s42114-024-01160-6","url":null,"abstract":"<div><p>Array-patterned anisotropic conductive films (A-ACFs) possessing periodically arranged conductive particles distributed in curable resins can have high circuit-bonding precision; however, the preparation of A-ACFs is a challenging work. On the other hand, the traditional electrolysis coating of metal on polymer cores as the conductive particles needs long preparation steps. Herein, a new simplified approach uses polyaniline (PANI) as an intermediate layer to wrap the polystyrene (PS) microspheres and also chelate silver to prepare silver-coated PS microspheres (PS@PANI@Ag). Through a series of experimental regulation, neat PS@PANI@Ag microspheres with an average diameter of 4.73 ± 0.13 μm possessing a silver layer of about 65 nm and weight percentage of 23.6% were prepared. For developing A-ACFs, an approach is loading the prepared particles into the microcavities with a diameter of 6 μm and depth of 4 μm in silicon template through rubbing assembly process, transferring these particles onto the surface of a kind of chosen polymerizable acrylate resin to keep their periodicity, and embedding these particles in the polymeric resin films. These A-ACFs were used to bond indium-tin-oxide (ITO) and flexible-printed circuits (FPC) with 200-μm spacing to achieve low connection resistance of 1.78 ± 0.03 Ω/0.4 mm² and high insulation resistance over 200 MΩ. After aging at 85 °C and 85% relative humidity condition for 120 h, the connection resistance change is less 9.8%, showing the bonded device’s good environmental stability. The anisotropic property was also demonstrated using a homemade device through turning LEDs on or off. Therefore, the conductive particles’ and A-ACFs’ preparation methods may provide new insights for ACFs’ designing strategy and application in industry.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 1","pages":""},"PeriodicalIF":23.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of cork features of Erythrina mulungu and Enterolobium gummiferum in view of a potential valorization and conservation of forest species in the Cerrado bioma","authors":"Graciene da Silva Mota,&nbsp;Fernanda Carlota Nery,&nbsp;Elesandra da Silva Araujo,&nbsp;Mário Sérgio Lorenço,&nbsp;Helena Pereira,&nbsp;Fábio Akira Mori","doi":"10.1007/s00107-024-02159-y","DOIUrl":"10.1007/s00107-024-02159-y","url":null,"abstract":"<div><p>The cork in the Cerrado endemic species <i>Erythrina mulungu</i> and <i>Enterolobium gummiferum</i> was characterized here for the first time in relation to structure and anatomical and chemical features, aiming to reconcile Cerrado native species conservation with income generation for local communities through a sustainable forest management. Both barks showed only one circumferential continuous periderm with a substantial cork layer featuring cork rings and characterized by deep longitudinal fractures originating from stem radial growth. The cellular features of both corks agree with the general characteristics of cork tissues regarding arrangement, topology and dimensions. However, in <i>E. gummiferum</i> the earlycork cells appeared radially stretched and with broken cell walls giving rise to higher tissue heterogeneity. Chemically, the corks of <i>E. mulungu</i> and <i>E. gummiferum</i> are characterized by a very high content in extractives (38.4% and 20.3% respectively), a low suberin content (4.7% and 3.9%, respectively), and high lignin content (36.8% and 38.6%, respectively). The ethanol-water extracts showed a low total phenolics content (27.0 and 32.2 mg GAE/g extract respectively). The cellular features confer to the corks of both species protective insulating properties that are important adaptative characteristics to the Cerrado environment. As regards potential applications, the corks may be used in insulation products with low mechanical resistance requirements, while the high content in polar extractives is indicative of a possible extraction pathway for added value compounds although further compositional and activity studies are needed.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grain boundary plasticity and twinning plasticity can be strongly coupled","authors":"Yingbin Chen, Xiaohong Shao, Ze Zhang, Jiangwei Wang","doi":"10.1016/j.jmst.2024.12.007","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.007","url":null,"abstract":"Grain boundary (GB) deformation and twinning behavior have been recognized as important contributors to the plasticity of polycrystalline materials. However, a comprehensive understanding of dynamic interplay between GB deformation and twinning behavior remains largely elusive. Using <em>in situ</em> nanomechanical testing, we reveal that GB plasticity and twinning plasticity can be strongly coupled in the context of various deformation characteristics, including lamellae-type twinning from GBs, GB splitting-associated twinning, twinning from triple junctions (TJs), and GB-mediated hierarchical twinning. These GB/TJ-associated twinning modes often arise from the combined effect of macroscopic (geometry-dominated) and microscopic (excess volume-dominated) degrees of freedom of GBs/TJs as an effective way to alleviate local stress concentration, which in turn provides a chance of adjusting GB mobility and enhancing the coordinated evolution of entire interface network in three-dimensional space. Such coupling between GB plasticity and twinning plasticity should represent a general deformation mode in different metallic materials, holding important implications for preventing premature GB cracking and enhancing material ductility.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"111 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}