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| 1 | Enhanced electrical properties in bilayered ferroelectric thin films显示文摘Sr2Bi4Ti5O18(SBTi) single layered and Sr2Bi4Ti5O18 /Pb(Zr0.53Ti0.47)O3(SBTi/PZT) bilayered thin films have been prepared on Pt/TiO2/SiO2/Si substrates by pulsed-laser deposition(PLD).The related structural characterizations and electrical properties have been comparatively investigated.X-ray diffraction reveals that both films have crystallized into perovskite phases and scanning electron microscopy shows the sharp interfaces.Both films show well-saturated ferroelectric hysteresis loops,however,compared with the single layered SBTi films,the SBTi/PZT bilayered films have significantly increased remnant polarization(Pr) and decreased coercive field(Ec),with the applied field of 260 kV/cm.The measured Pr and Ec of SBTi and SBTi/PZT films were 7.9 C/cm 2,88.1 kV/cm and 13.0 C/cm 2,51.2 kV/cm,respectively.In addition,both films showed good fatigue-free characteristics,the switchable polarization decreased by 9% and 11% of the initial values after 2.2 10 9 switching cycles for the SBTi single layered films and the SBTi/PZT bilayered films,respectively.Our results may provide some guidelines for further optimization of multilayered ferroelectric thin films. | ZHANG Hao LONG WeiJie CHEN YaQing GUO DongJie | 2013 | Science China Chemistry2013，56，3： | 2 |
| 2 | Energetic particles’fluxes and dose in the Radiation Gene Box measured by space radiation detector onboard SJ-10 satellite显示文摘Background To evaluate the hazard of space radiation posing to the tissues,it is important to obtain exact fluxes of different radiation particles.The Radiation Gene Box(RGB)onboard SJ-10 spacecraft was an instrument designed to investigate the effects of space environment on the mESCs and drosophila.To derive the dose received by the tissues inside the RGB,the Space Radiation Detector(SRD)was installed inside it.Purpose The SRD was designed to derive the fluxes of electron,proton,hellion and gamma rays around it.If the type of the particles,the energies,the fluxes and the conversion coefficients are known,the dose received by the tissues could be evaluated.Methods The SRDwas designed as a △E-E solid-state telescope.By measuring the energy deposited in the three subdetectors,the particles’type and their energies could be discriminated.The data of SRDwere divided into 15 bins by the types of particles and their energy ranges.Results The gamma ray flux was higher than any other particle flux inside the RGB,and the electron was the most intense charge particle,while the helium ion was the most harmful radiation to the cells inside the RGB.Conclusion The dose rate inside the Radiation Gene Box was much higher than in the ground,but the integral dose of 12 days inside the RGB was about 2.13 mSv.It seemed unlikely to have obvious biological effects on the tissues of mice and drosophila. | Xingzhu Cui Yaqing Liu Wenxi Peng Jinzhou Wang Min Gao Dongya Guo Xiaohua Liang Ruirui Fan Huanyu Wang Yunlong Zhang Zhongjian Ma Mingyang Yan Hong Xiao Yuanda Jiang Haiying Hang | 2018 | Radiation Detection Technology and Methods2018，2，2： | 2 |
| 3 | Corrigendum to“SARS-CoV-2 induced intestinal responses with a biomimetic human gut-on-chip”[Sci.Bull.(2021)66(8)783-793]显示文摘The authors would like to correct Fig.2g.An annotation error was introduced in the preparation of this figure for publication.The authors declare that this correction does not change the results or conclusions of this paper.The authors sincerely apologize for having this error in the article,and apologize for any inconvenience caused. | Yaqiong Guo Ronghua Luo Yaqing Wang Pengwei Deng Tianzhang Song Min Zhang Peng Wang Xu Zhang Kangli Cui Tingting Tao Zhongyu Li Wenwen Chen Yongtang Zheng Jianhua Qin | 2021 | Science Bulletin2021，66，20： | 2 |
| 4 | Degradation mechanism analysis of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) single crystal cathode materials through machine learning显示文摘LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)has become one of the most popular cathode materials for current lithium-ion batteries due to its high-energy density and cost performance.However,the rapid capacity fading of NCM severely hinders its development and applications.Here,the single crystal NCM523 materials under different degradation states are characterized using scanning transmission electron microscopy(STEM).Then we developed a neural network model with a two-sequential attention block to recognize the crystal structure and locate defects in STEM images.The number of point defects in NCM523 is observed to experience a trend of increasing first and then decreasing in the degradation process.The space between the transition metal columns shrinks obviously,inducing dramatic capacity decay.This analysis sheds light on the defect evolution and chemical transformation correlated with layered material degradation.It also provides interesting hints for researchers to regenerate the electrochemical capacity and design better battery materials with longer life. | Wuxin Sha Yaqing Guo Danpeng Cheng Qigao Han Ping Lou Minyuan Guan Shun Tang Xinfang Zhang Songfeng Lu Shijie Cheng Yuan-Cheng Cao | 2022 | npj Computational Materials2022，，1： | 1 |
| 5 | 螺旋CT与超声造影在肾细胞癌诊断中的对比研究(英文)显示文摘Objective: To investigate the efficiency of helical CT comparing with contrast-enhanced ultrasound, and to im- prove the diagnosis efficiency of renal cell carcinoma (RCC). Methods: Thirty RCCs confirmed pathologically were studied retrospectively. The un-enhanced CT scan and the triphasic enhanced helical CT scan were performed in all cases, the gray-scale US and angiosonography with SonoVue were performed in all cases meantime. Results: 22 cases (73.3%) were diagnosed correctly by helical CT alone before operation. 7 cases (23.3%) were suspected as RCC with helical CT. One case (3.3%) was misdiagnosed with helical CT. 25 cases (83.3%) were diagnosed correctly with contrast-enhanced ultrasound alone pre-operation. One case (3.3%) was suspected as RCC with angiosonography. Four cases (13.3%) were misdiagnosed with angiosonography alone. 29 cases (96.7%) were diagnosed correctly by helical CT combining with angiosonography before operation, one case (3.3%) was diagnosed as renal mass with both helical CT and angiosonography. Conclusion: Contrast-enhanced ultrasound is sensitive in detecting blood flow, it can detect the enhancement of the tumor which cannot be detected by helical CT. CT and angiosonography have strong complement each other in the diagnosis of RCC. | Yan Guo Guangsheng Wan Yaqing Chen Mingjuan Liu Qian Peng Zhaomin Huang | 2008 | The Chinese-German Journal of Clinical Oncology2008，7，2： | 1 |
| 6 | Machine learning in polymer informatics显示文摘Polymers have been widely used in energy storage,construction,medicine,aerospace,and so on.However,the complexity of chemical composition and morphology of polymers has brought challenges to their development.Thanks to the integration of machine leaming algorithms and large data resources,the data-driven methods have opened up a new road for the development of poly-mer science and engineering.The emerging polymer informatics attempts to accelerate the performance prediction and process optimization of new poly-mers by using machine learning models based on reliable data.With the grad-ual supplement of currently available databases,the emergence of new databases and the continuous improvement of machine learning algorithms,the research paradigm of polymer informatics will be more efficient and widely used.Based on these points,this paper reviews the development trends of machine learning assisted polymer informatics and provides a simple introduc-tion for researchers in materials,artificial intelligence,and other fields. | Wuxin Sha Yan Li Shun Tang Jie Tian Yuming Zhao Yaqing Guo Weixin Zhang Xinfang Zhang Songfeng Lu Yuan-Cheng Cao Shijie Cheng | 2021 | InfoMat2021，3，4： | 1 |
| 7 | Urbanization Effects on Observed Surface Air Temperature Trends in North China显示文摘 | Ren Guoyu Zhou Yaqing Chu Ziying Zhou Jiangxing Zhang Aiying Guo Jun Liu Xuefeng | 2008 | Journal of Climate2008，，6： | 1 |
| 8 | Urbanization Effects on Observed Surface Air Temperature Trends in North China显示文摘 | Ren Guoyu Zhou Yaqing Chu Ziying Zhou Jiangxing Zhang Aiying Guo Jun Liu Xuefeng | 2008 | Journal of Climate2008，，： | 1 |
| 9 | Differential response to paraquat induced oxidative stress in two rice cultivars on antioxidants and chlorophyll a fluorescence显示文摘 | Guo Z Huang M Lu S Yaqing Z Zhong Q | 2007 | Acta Physiol Plant2007，29，： | 1 |
| 10 | Neurodevelopmental impairment induced by prenatal valproic acid exposure shown with the human cortical organoid-on-a-chip model显示文摘Prenatal exposure to environmental insults can increase the risk of developing neurodevelopmental disorders.Administration of the antiepileptic drug valproic acid(VPA)during pregnancy is tightly associated with a high risk of neurological disorders in offspring.However,the lack of an ideal human model hinders our comprehensive understanding of the impact of VPA exposure on fetal brain development,especially in early gestation.Herein,we present the first report indicating the effects of VPA on brain development at early stages using engineered cortical organoids from human induced pluripotent stem cells(hiPSCs).Cortical organoids were generated on micropillar arrays in a controlled manner,recapitulating the critical features of human brain development during early gestation.With VPA exposure,cortical organoids exhibited neurodevelopmental dysfunction characterized by increased neuron progenitors,inhibited neuronal differentiation and altered forebrain regionalization.Transcriptome analysis showed new markedly altered genes(e.g.,KLHL1,LHX9,and MGARP)and a large number of differential expression genes(DEGs),some of which are related to autism.In particular,comparison of transcriptome data via GSEA and correlation analysis revealed the high similarity between VPA-exposed organoids with the postmortem ASD brain and autism patient-derived organoids,implying the high risk of autism with prenatal VPA exposure,even in early gestation.These new findings facilitate a better understanding of the cellular and molecular mechanisms underlying postnatal brain disorders(such as autism)with prenatal VPA exposure.This established cortical organoid-on-a-chip platform is valuable for probing neurodevelopmental disorders under environmental exposure and can be extended to applications in the study of diseases and drug testing. | Kangli Cui Yaqing Wang Yujuan Zhu Tingting Tao Fangchao Yin Yaqiong Guo Haitao Liu Fei Li Peng Wang Yuejun Chen Jianhua Qin | 2020 | Microsystems & Nanoengineering2020，6，1： | 1 |
| 11 | Result of proton beam energy calibration of GECAM satellite charged particle detector显示文摘Purpose A charged particle detector(CPD)is one of two main detectors on the GECAM satellite.It was designed to detect charged particles.Electrons and protons are space’s mainly charged particles.So,a research on the proton detection ability of a CPD and deriving the energy response to charged particles of the CPD in the two designed operating modes is important.Method The proton calibration tests of the CPD under diferent working modes were carried out at the Heavy Ion Research Facility in Lanzhou.Result and conclusion Through testing and analysis,it was concluded that when CPD works in semi-component mode,it can detect the maximum energy,and when working in full-component mode,it can provide better energy resolution. | Chaoyue Zhang Xiaohua Liang Yanbing Xu Wenxi Peng Jianjian He Dongya Guo Ke Gong Yaqing Liu Zhenghua An Dali Zhang Sheng Yang Xiaojing Liu Xiangyang Wen Rui Qiao Jinzhou Wang Min Gao Shaolin Xiong Fan Zhang Xinqiao Li Xingzhu Cui Chaoyang Li Jilong Tang Xiaohua Wang Dengkui Wang Zhipeng Wei | 2022 | Radiation Detection Technology and Methods2022，6，1： | 0 |
| 12 | Heterointerface engineering of assembled CoP_(2) on N-modified carbon as efficient trifunctional electrocatalysts for Zn-Air batteries and overall water splitting显示文摘Enhancing catalytic activity through modulating the interaction between N-doped carbon and metal phosphides clusters is an effective approach.Herein,the electronic structure modulation of CoP_(2) supported N-modified carbon(CoP_(2)/NC)has been designed and prepared as efficient electrocatalysts for oxygen reduction reaction(ORR),oxygen evolution reaction(OER),and hydrogen evolution reaction(HER).Notably,CoP_(2)/NC-1 catalyst exhibits impressive performance in alkaline media,with an ORR half-wave potential of 0.84 V,as well as OER and HER overpotentials of 290 and 129 mV(at 10 mA·cm^(−2)),respectively.In addition,CoP_(2)/NC-1 produces a power density as high as 172.9 mW·cm^(−2),and excellent reversibility of 100 h at 20 mA·cm^(−2) in home-made Zn-air batteries.The experimental results demonstrate that the synergistic interactions between N modified carbon substrate and CoP_(2) material significantly enhance the kinetics of ORR,OER,and HER.Density functional theory(DFT)calculations reveal the strong electrons redistribution of CoP_(2) induced by high-density N atoms at the interface,thus optimizing the key intermediates and significantly lower the energy barrier of reactions.These electronic adjustments of CoP_(2) greatly enhance its kinetics of ORR/OER/HER,leading to faster reactions.This study provides profound insights into the specific modification of CoP_(2) by N-doped carbon,enabling the construction of efficient catalysts. | Yan Chen Zhenrui Yang Juan Wang Yun Yang Xuedong He Yang Wang Jiadong Chen Yaqing Guo Xin Wang Shun Wang Huile Jin | 2024 | Nano Research2024，17，5： | 0 |
| 13 | Ferroelectricity in hBN intercalated double-layer graphene显示文摘Van der Waals(vdW)assembly of two-dimensional materials has long been recognized as a powerful tool for creating unique systems with properties that cannot be found in natural compounds[Nature 499,419(2013)].However,among the variety of vdW heterostructures and their various properties,only a few have revealed metallic and ferroelectric behaviour signatures[Sci.Adv.5,eaax5080(2019);Nature 560,336(2018)].Here we show ferroelectric semimetal made of double-gated double-layer graphene separated by an atomically thin crystal of hexagonal boron nitride.The structure demonstrates high room temperature mobility of the order of 10 m2·V^(−1)·s^(−1) and exhibits ambipolar switching in response to the external electric field.The observed hysteresis is reversible and persists above room temperature.Our fabrication method expands the family of ferroelectric vdW compounds and offers a promising route for developing novel phase-changing devices.A possible microscopic model of ferroelectricity is discussed. | Yibo Wang Siqi Jiang Jingkuan Xiao Xiaofan Cai Di Zhang Ping Wang Guodong Ma Yaqing Han Jiabei Huang Kenji Watanabe Takashi Taniguchi Yanfeng Guo Lei Wang Alexander S.Mayorov Geliang Yu | 2022 | Frontiers of physics2022，17，4： | 0 |
| 14 | Porous bismuth nanocrystals with advanced sodium ion storage property显示文摘Bismuth-based materials are ideal electrodes for sodium-ion batteries(SIBs)due to their high capacity and low cost.However,conventional solid bismuth materials still suffer from severe volume expansion during the reaction process,which hinders its application.Herein,single-crystal bismuth nanospheres with diameters in the range of 200-400 nm were successfully prepared with the Na-Bi alloying mechanism studied using in-situ XRD,which confirms a stepwise process of Bi→NaBi→Na_(3)Bi with large volume variation.To address the volume change issue,we introduce a porous structure into the bulk of Bi crystals,which alleviated its volume expansion and suppressed its cyclic failure.An in-situ TEM experiment is further carried out to verify this effective structure-modification strategy,demonstrating its applicable feature for electrode design and performance enhancement. | Yun Li Yaqing Guo Kun You Chi Guo Chenghang Li Xuemei Zeng Wei Wang Qing Tang Yifei Yuan | 2023 | Progress in Natural Science:Materials International2023，33，1： | 0 |
| 15 | Rejuvenating LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) cathode directly from battery scraps显示文摘Battery recycling is indispensable for alleviating critical material shortages and enabling sustainable battery applications.However,current methods mostly focus on spent batteries,which not only require sophisticated disassembly and material extraction but also have unknown chemistries and states of health,resulting in high costs and extreme challenges to achieve regeneration.Here,we propose the direct recycling and effective regeneration of air-degraded LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)cathode directly from battery scraps generated during battery manufacturing.The NCM523 shows surface degradation only a few nanometers deep and accordingly can be regenerated without adding Li,achieving restored properties(170 mAh g^(-1) at 0.1 C,92.7%retention after 1000 cycles)similar to those of fresh commercial materials.EverBatt analysis shows that scrap recycling has a profit of$1.984 kg^(-1),which is~10 times higher than conventional recycling,making it practical and economical to rejuvenate slightly degraded electrode materials for sustainable battery manufacturing. | Yaqing Guo Chi Guo Pengjie Huang Qigao Han Fuhe Wang Hao Zhang Honghao Liu Yuan-Cheng Cao Yonggang Yao Yunhui Huang | 2023 | eScience2023，3，2： | 0 |
| 16 | Seamlessly Merging the Capacity of P into Sb at Same Voltage with Maintained Superior Cycle Stability and Low-temperature Performance for Li-ion Batteries显示文摘Among the alloying-type anodes,elemental Sb possesses the suitable yet safe plateau,simple lithiation pathway,small voltage polarization,high conductivity,and superior cycle stability.However,challenge is that its intrinsic capacity is rather low(660 mAh g^(-1)),<1/6 of silicon.Herein,we propose a seamless integration strategy by merging the voltage and capacity of phosphorus and antimony into a solid solution alloy.Interestingly,the enlistment of P is found greatly enlarge the capacity from 660 to 993 mAh g^(-1) for such Sb_(30)P_(30) solid solution,while maintaining a single and stable discharge plateau(~0.79 V)similar to elemental Sb.Various experimental characterizations including XPS,PDF,Raman,and EDS mapping reveal that in such a material the P and Sb atoms have interacted with each other to form a homogenous solid solution alloy,rather than a simple mixing of the two substances.Thus,the Sb_(30)P_(30) exhibits superior rate performances(807 mAh g^(-1) at 5000 mA g^(-1))and cyclability(821 mAh g^(-1) remained after 300 cycles).Furthermore,such Sb_(60-x)P_(x) alloys can even deliver 621 mAh g^(-1) at30℃,which can be served as the alternative anode materials for high-energy and low-temperature batteries.This unique seamless integration strategy based on solid solution chemistry can be easily leveraged to manipulate the capacity of other electrode materials at similar voltage. | Yaqing Wei Jun He Jie Zhang Mingyang Ou Yanpeng Guo Jiajun Chen Cheng Zeng Jia Xu Jiantao Han Tianyou Zhai Huiqiao Li | 2023 | Energy & Environmental Materials2023，6，2： | 0 |
| 17 | Oxygen vacancies effects on phase diagram of epitaxial La1-xSrxMnO3 thin films显示文摘We investigated the effects of oxygen vacancies on the structural,magnetic,and transport properties of La_(1-x)Sr_xMnO_3(x=0.1,0.2,0.33,0.4,and 0.5)grown around a critical point(without/with oxygen vacancies)under low oxygen pressure(10 Pa)and high oxygen pressure(40 Pa).We found that all films exhibit ferromagnetic behavior below the magnetic critical temperature,and that the films grown under low oxygen pressures have degraded magnetic properties with lower Curie temperatures and smaller magnetic moments.These results show that in epitaxial La_(1-x)Sr_xMnO_3 thin films,the magnetic and transport properties are very sensitive to doping concentration and oxygen vacancies.Phase diagrams of the films based on the doping concentration and oxygen vacancies were plotted and discussed. | Qian Wan KuiJuan Jin QingQing Li YaQing Feng Can Wang Chen Ge Meng He HuiBin Lu HaiZhong Guo XiaoLong Li YuPing Yang GuoZhen Yang | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，5： | 0 |
| 18 | Coupling model for unsteady MHD flow of generalized Maxwell fluid with radiation thermal transform*显示文摘This paper introduces a new model for the Fourier law of heat conduction with the time-fractional order to the generalized Maxwell fluid. The flow is influenced by magnetic field, radiation heat, and heat source. A fractional calculus approach is used to establish the constitutive relationship coupling model of a viscoelastic fluid. We use the Laplace transform and solve ordinary differential equations with a matrix form to obtain the velocity and temperature in the Laplace domain. To obtain solutions from the Laplace space back to the original space, the numerical inversion of the Laplace transform is used.According to the results and graphs, a new theory can be constructed. Comparisons of the associated parameters and the corresponding flow and heat transfer characteristics are presented and analyzed in detail. | Yaqing LIU Boling GUO | 2016 | Applied Mathematics and Mechanics(English Edition)2016，37，2： | 0 |
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