Research (Washington, D.C.)最新文献

{"title":"Deciphering the Role of Fluoroethylene Carbonate towards Highly Reversible Sodium Metal Anodes.","authors":"Xueying Zheng, Suting Weng, Wei Luo, Bo Chen, Xiao Zhang, Zhenyi Gu, Haotian Wang, Xiaolu Ye, Xuyang Liu, Liqiang Huang, Xinglong Wu, Xuefeng Wang, Yunhui Huang","doi":"10.34133/2022/9754612","DOIUrl":"10.34133/2022/9754612","url":null,"abstract":"<p><p>Sodium metal anodes (SMAs) suffer from extremely low reversibility (<20%) in carbonate-based electrolytes-this piece of knowledge gained from previous studies has ruled out the application of carbonate solvents for sodium metal batteries. Here, we overturn this conclusion by incorporating fluoroethylene carbonate (FEC) as cosolvent that renders a Na plating/stripping efficiency of >95% with conventional NaPF₆ salt at a regular concentration (1.0 M). The peculiar role of FEC is firstly unraveled via its involvement into the solvation structure, where a threshold FEC concentration with a coordination number>1.2 is needed in guaranteeing high Na reversibility over the long-term. Specifically, by incorporating an average number of 1.2 FEC molecules into the primary Na⁺ solvation sheath, lowest unoccupied molecular orbital (LUMO) levels of such Na⁺-FEC solvates undergo further decrease, with spin electrons residing either on the O=CO(O) moiety of FEC or sharing between Na⁺ and its C=O bond, which ensures a prior FEC decomposition in passivating the Na surface against other carbonate molecules. Further, by adopting cryogenic transmission electron microscopy (cryo-TEM), we found that the Na filaments grow into substantially larger diameter from ~400 nm to >1 <i>μ</i>m with addition of FEC upon the threshold value. A highly crystalline and much thinner (~40 nm) solid-electrolyte interphase (SEI) is consequently observed to uniformly wrap the Na surface, in contrast to the severely corroded Na as retrieved from the blank electrolyte. The potence of FEC is further demonstrated in a series of \"corrosive solvents\" such as ethyl acetate (EA), trimethyl phosphate (TMP), and acetonitrile (AN), enabling highly reversible SMAs in the otherwise unusable solvent systems.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9754612"},"PeriodicalIF":10.7,"publicationDate":"2022-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8817186/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39927451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twin-Wire Networks for Zero Interconnect, High-Density 4-Wire Electrical Characterizations of Materials.","authors":"Nerio Andrés Montoya,&nbsp;Valeria Criscuolo,&nbsp;Andrea Lo Presti,&nbsp;Raffaele Vecchione,&nbsp;Christian Falconi","doi":"10.34133/2022/9874249","DOIUrl":"https://doi.org/10.34133/2022/9874249","url":null,"abstract":"<p><p>Four-wire measurements have been introduced by Lord Kelvin in 1861 and have since become the standard technique for characterizing small resistances and impedances. However, high-density 4-wire measurements are generally complex, time-consuming, and inefficient because of constraints on interconnects, pads, external wires, and mechanical contacts, thus reducing reproducibility, statistical significance, and throughput. Here, we introduce, systematically design, analyze, and experimentally validate zero interconnect networks interfaced to external instrumentation by couples of twin wire. 3D-printed holders with magnets, interconnects, nonadhesive layers, and spacers can effortlessly establish excellent electrical connections with tunable or minimum contact forces and enable accurate measurements even for delicate devices, such as thin metals on soft polymers. As an example, we measured all the resistances of a twin-wire 29-resistor network made of silver-nanoparticle ink printed on polyimide, paper, or photo paper, including during sintering or temperature calibration, resulting in an unprecedentedly easy and accurate characterization of both resistivity and its temperature coefficient. The theoretical framework and experimental strategies reported here represent a breakthrough toward zero interconnect, simple, and efficient high-density 4-wire characterizations, can be generalized to other 4-wire measurements (impedances, sensors) and can open the way to more statistically meaningful and reproducible analyses of materials, high-throughput measurements, and minimally invasive characterizations of biomaterials.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9874249"},"PeriodicalIF":11.0,"publicationDate":"2022-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8771198/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39873419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexoelectricity Driven Fano Resonance in Slotted Carbon Nanotubes for Decoupled Multifunctional Sensing.","authors":"Jinlong Ren,&nbsp;Yingchao Liu,&nbsp;Xingqiang Shi,&nbsp;Guangcun Shan,&nbsp;Mingming Tang,&nbsp;Chaocheng Kaun,&nbsp;Kunpeng Dou","doi":"10.34133/2021/9821905","DOIUrl":"https://doi.org/10.34133/2021/9821905","url":null,"abstract":"<p><p>Multifunctionality, interference-free signal readout, and quantum effect are important considerations for flexible sensors equipped within a single unit towards further miniaturization. To address these criteria, we present the slotted carbon nanotube (CNT) junction features tunable Fano resonance driven by flexoelectricity, which could serve as an ideal multimodal sensory receptor. Based on extensive ab initio calculations, we find that the effective Fano factor can be used as a temperature-insensitive extrinsic variable for sensing the bending strain, and the Seebeck coefficient can be used as a strain-insensitive intrinsic variable for detecting temperature. Thus, this dual-parameter permits simultaneous sensing of temperature and strain without signal interference. We further demonstrate the applicability of this slotted junction to ultrasensitive chemical sensing which enables precise determination of donor-type, acceptor-type, and inert molecules. This is due to the enhancement or counterbalance between flexoelectric and chemical gating. Flexoelectric gating would preserve the electron-hole symmetry of the slotted junction whereas chemical gating would break it. As a proof-of-concept demonstration, the slotted CNT junction provides an excellent quantum platform for the development of multistimuli sensation in artificial intelligence at the molecular scale.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9821905"},"PeriodicalIF":11.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8739842/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39835832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Analysis of the SARS-CoV-2 Omicron Variant Proteins.","authors":"Qiangzhen Yang,&nbsp;Ali Alamdar Shah Syed,&nbsp;Aamir Fahira,&nbsp;Yongyong Shi","doi":"10.34133/2021/9769586","DOIUrl":"https://doi.org/10.34133/2021/9769586","url":null,"abstract":"<p><p>The spread of the latest SARS-CoV-2 variant Omicron is particularly concerning because of the large number of mutations present in its genome and lack of knowledge about how these mutations would affect the current SARS-CoV-2 vaccines and treatments. Here, by performing phylogenetic analysis using the Omicron spike (S) protein sequence, we found that the Omicron S protein presented the longest evolutionary distance in relation to the other SARS-CoV-2 variants. We predicted the structures of S, M, and N proteins of the Omicron variant using AlphaFold2 and investigated how the mutations have affected the S protein and its parts, S1 NTD and RBD, in detail. We found many amino acids on RBD were mutated, which may influence the interactions between the RBD and ACE2, while also showing the S309 antibody could still be capable of neutralizing Omicron RBD. The Omicron S1 NTD structures display significant differences from the original strain, which could lead to reduced recognition by antibodies resulting in potential immune escape and decreased effectiveness of the existing vaccines. However, this study of the Omicron variant was mainly limited to structural predictions, and these findings should be explored and verified by subsequent experiments. This study provided basic data of the Omicron protein structures that lay the groundwork for future studies related to the SARS-CoV-2 Omicron variant.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9769586"},"PeriodicalIF":11.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8765807/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39866095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchical Hydrogels with Ordered Micro-Nano Structures for Cancer-on-a-Chip Construction.","authors":"Luyao Zhu,&nbsp;Changmin Shao,&nbsp;Hanxu Chen,&nbsp;Zhuoyue Chen,&nbsp;Yuanjin Zhao","doi":"10.34133/2021/9845679","DOIUrl":"https://doi.org/10.34133/2021/9845679","url":null,"abstract":"<p><p>In the drug therapy of tumor, efficient and stable drug screening platforms are required since the drug efficacy varies individually. Here, inspired by the microstructures of hepatic lobules, in which hepatocytes obtain nutrients from both capillary vessel and the central vein, we present a novel hierarchical hydrogel system with ordered micro-nano structure for liver cancer-on-a-chip construction and drug screening. The hierarchical hydrogel system was fabricated by using pregel to fill and replicate self-assembled colloidal crystal arrays and microcolumn array template. Due to the synergistic effect of its interconnected micro-nano structures, the resultant system could not only precisely control the size of cell spheroids but also realize adequate nutrient supply of cell spheroids. We have demonstrated that by integrating the hierarchical hydrogel system into a multichannel concentration gradients microfluidic chip, a functional liver cancer-on-a-chip could be constructed for high-throughput drug screening with good repeatability and high accuracy. These results indicated that the hierarchical hydrogel system and its derived liver cancer-on-a-chip are ideal platforms for drug screening and have great application potential in the field of personalized medicine.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9845679"},"PeriodicalIF":11.0,"publicationDate":"2021-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8724685/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39821655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Titanium Hydride Nanoplates Enable 5 wt% of Reversible Hydrogen Storage by Sodium Alanate below 80°C.","authors":"Zhuanghe Ren,&nbsp;Xin Zhang,&nbsp;Hai-Wen Li,&nbsp;Zhenguo Huang,&nbsp;Jianjiang Hu,&nbsp;Mingxia Gao,&nbsp;Hongge Pan,&nbsp;Yongfeng Liu","doi":"10.34133/2021/9819176","DOIUrl":"https://doi.org/10.34133/2021/9819176","url":null,"abstract":"<p><p>Sodium alanate (NaAlH₄) with 5.6 wt% of hydrogen capacity suffers seriously from the sluggish kinetics for reversible hydrogen storage. Ti-based dopants such as TiCl₄, TiCl₃, TiF₃, and TiO₂ are prominent in enhancing the dehydrogenation kinetics and hence reducing the operation temperature. The tradeoff, however, is a considerable decrease of the reversible hydrogen capacity, which largely lowers the practical value of NaAlH₄. Here, we successfully synthesized a new Ti-dopant, i.e., TiH₂ as nanoplates with ~50 nm in lateral size and ~15 nm in thickness by an ultrasound-driven metathesis reaction between TiCl₄ and LiH in THF with graphene as supports (denoted as NP-TiH₂@G). Doping of 7 wt% NP-TiH₂@G enables a full dehydrogenation of NaAlH₄ at 80°C and rehydrogenation at 30°C under 100 atm H₂ with a reversible hydrogen capacity of 5 wt%, superior to all literature results reported so far. This indicates that nanostructured TiH₂ is much more effective than Ti-dopants in improving the hydrogen storage performance of NaAlH₄. Our finding not only pushes the practical application of NaAlH₄ forward greatly but also opens up new opportunities to tailor the kinetics with the minimal capacity loss.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9819176"},"PeriodicalIF":11.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8696284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39792616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Printable and Conductive Yield-Stress Fluid as an Ultrastretchable Transparent Conductor.","authors":"Qianying Lu,&nbsp;Yunlei Zhou,&nbsp;Xiangfei Yin,&nbsp;Shitai Cao,&nbsp;Xiaoliang Wang,&nbsp;Desheng Kong","doi":"10.34133/2021/9874939","DOIUrl":"https://doi.org/10.34133/2021/9874939","url":null,"abstract":"<p><p>In contrast to ionically conductive liquids and gels, a new type of yield-stress fluid featuring reversible transitions between solid and liquid states is introduced in this study as a printable, ultrastretchable, and transparent conductor. The fluid is formulated by dispersing silica nanoparticles into the concentrated aqueous electrolyte. The <i>as</i>-printed features show solid-state appearances to allow facile encapsulation with elastomers. The transition into liquid-like behavior upon tensile deformations is the enabler for ultrahigh stretchability up to the fracture strain of the elastomer. Successful integrations of yield-stress fluid electrodes in highly stretchable strain sensors and light-emitting devices illustrate the practical suitability. The yield-stress fluid represents an attractive building block for stretchable electronic devices and systems in terms of giant deformability, high ionic conductivity, excellent optical transmittance, and compatibility with various elastomers.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9874939"},"PeriodicalIF":11.0,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8696283/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39792617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly Stable Nonhydroxyl Antisolvent Polymer Dielectric: A New Strategy towards High-Performance Low-Temperature Solution-Processed Ultraflexible Organic Transistors for Skin-Inspired Electronics.","authors":"Mingxin Zhang,&nbsp;Cong Zhang,&nbsp;Yahan Yang,&nbsp;Hang Ren,&nbsp;Junmo Zhang,&nbsp;Xiaoli Zhao,&nbsp;Yanhong Tong,&nbsp;Qingxin Tang,&nbsp;Yichun Liu","doi":"10.34133/2021/9897353","DOIUrl":"https://doi.org/10.34133/2021/9897353","url":null,"abstract":"<p><p>Scarcity of the antisolvent polymer dielectrics and their poor stability have significantly prevented solution-processed ultraflexible organic transistors from low-temperature, large-scale production for applications in low-cost skin-inspired electronics. Here, we present a novel low-temperature solution-processed PEI-EP polymer dielectric with dramatically enhanced thermal stability, humidity stability, and frequency stability compared with the conventional PVA/c-PVA and c-PVP dielectrics, by incorporating polyethyleneimine PEI as crosslinking sites in nonhydroxyl epoxy EP. The PEI-EP dielectric requires a very low process temperature as low as 70°C and simultaneously possesses the high initial decomposition temperature (340°C) and glass transition temperature (230°C), humidity-resistant dielectric properties, and frequency-independent capacitance. Integrated into the solution-processed C8-BTBT thin-film transistors, the PEI-EP dielectric enables the device stable operation in air within 2 months and in high-humidity environment from 20 to 100% without significant performance degradation. The PEI-EP dielectric transistor array also presents weak hysteresis transfer characteristics, excellent electrical performance with 100% operation rate, high mobility up to 7.98 cm² V^-1 s^-1 (1 Hz) and average mobility as high as 5.3 cm² V^-1 s^-1 (1 Hz), excellent flexibility with the normal operation at the bending radius down to 0.003 mm, and foldable and crumpling-resistant capability. These results reveal the great potential of PEI-EP polymer as dielectric of low-temperature solution-processed ultraflexible organic transistors and open a new strategy for the development and applications of next-generation low-cost skin electronics.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9897353"},"PeriodicalIF":11.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8678616/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39765667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abnormal Aggregation of Invasive Cancer Cells Induced by Collective Polarization and ECM-Mediated Mechanical Coupling in Coculture Systems.","authors":"Xiaochen Wang,&nbsp;Shaohua Chen,&nbsp;Hanqing Nan,&nbsp;Ruchuan Liu,&nbsp;Yu Ding,&nbsp;Kena Song,&nbsp;Jianwei Shuai,&nbsp;Qihui Fan,&nbsp;Yu Zheng,&nbsp;Fangfu Ye,&nbsp;Yang Jiao,&nbsp;Liyu Liu","doi":"10.34133/2021/9893131","DOIUrl":"https://doi.org/10.34133/2021/9893131","url":null,"abstract":"<p><p>Studies on pattern formation in coculture cell systems can provide insights into many physiological and pathological processes. Here, we investigate how the extracellular matrix (ECM) may influence the patterning in coculture systems. The model coculture system we use is composed of highly motile invasive breast cancer cells, initially mixed with inert nonmetastatic cells on a 2D substrate and covered with a Matrigel layer introduced to mimic ECM. We observe that the invasive cells exhibit persistent centripetal motion and yield abnormal aggregation, rather than random spreading, due to a \"collective pulling\" effect resulting from ECM-mediated transmission of active contractile forces generated by the polarized migration of the invasive cells along the vertical direction. The mechanism we report may open a new window for the understanding of biological processes that involve multiple types of cells.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9893131"},"PeriodicalIF":11.0,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8678614/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39765250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stable and Efficient Red Perovskite Light-Emitting Diodes Based on Ca²⁺-Doped CsPbI₃ Nanocrystals.","authors":"Wei Shen,&nbsp;Jianbin Zhang,&nbsp;Ruimin Dong,&nbsp;Yanfeng Chen,&nbsp;Liu Yang,&nbsp;Shuo Chen,&nbsp;Zhan Su,&nbsp;Yujun Dai,&nbsp;Kun Cao,&nbsp;Lihui Liu,&nbsp;Shufen Chen,&nbsp;Wei Huang","doi":"10.34133/2021/9829374","DOIUrl":"https://doi.org/10.34133/2021/9829374","url":null,"abstract":"<p><p><i>α</i>-CsPbI₃ nanocrystals (NCs) with poor stability prevent their wide applications in optoelectronic fields. Ca²⁺ (1.00 Å) as a new B-site doping ion can successfully boost CsPbI₃ NC performance with both improved phase stability and optoelectronic properties. With a Ca²⁺/Pb²⁺ ratio of 0.40%, both phase and photoluminescence (PL) stability could be greatly enhanced. Facilitated by increased tolerance factor, the cubic phase of its solid film could be maintained after 58 days in ambient condition or 4 h accelerated aging process at 120°C. The PL stability of its solution could be preserved to 83% after 147 days in ambient condition. Even using UV light to accelerate aging, the T₅₀ of PL could boost 1.8-folds as compared to CsPbI₃ NCs. Because Ca²⁺ doping can dramatically decrease defect densities of films and reduce hole injection barriers, the red light-emitting diodes (LEDs) exhibited about triple enhancement for maximum the external quantum efficiency (EQE) up to 7.8% and 2.2 times enhancement for half-lifetime of LED up to 85 min. We believe it is promising to further explore high-quality CsPbI₃ NC LEDs via a Ca²⁺-doping strategy.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9829374"},"PeriodicalIF":11.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8672203/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39765247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}