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High-gain signal-on PEDOT:PSS organic photoelectrochemical transistor biosensing modulated by a MXene/MOFs/NiO Schottky heterojunction

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Science China Chemistry 2023年第2期66卷 578-585页

作者： Zheng Li Yi-tong xu Jin Hu Ting Wang Fang-Qing Liu Hong Zhou Guang-xu Chen Peng Lin Wei-Wei Zhao Jing-Juan xu Hong-Yuan Chen State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Shenzhen Key Laboratory of Special Functional Materials&Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042China School of Environment and Energy State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSouth China University of TechnologyGuangzhou510006China

Herein we report a high-gain signal-on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)organic electrochemical transistor(OECT)biosensing using an accumulation-mode PEDOT:PSS OECT modulated by a light-fueled MXene/MOFs/Ni O Schottky *** such a system,the MXene/MOFs/Ni O Schottky heterojunction exhibited superior gating effect,as it not only enabled the fast-directional charge transfer but also guaranteed the maximal accessibility of the electrolyte to topped 2D MXene with large surface *** linkage with a bi-enzyme cascade system,the quinone derivatives produced by the cascade reaction of alkaline phosphatase(ALP)and tyrosinase(TYR)could serve as effective electron acceptors for the representative Ti_(3)C_(2)/PCN-224/Ni O heterojunction,underpinning an innovative method for sensitive detection of ALP activity with a low detection limit of 0.001 U L^(-1).Remarkably,the as-developed system demonstrated a remarkable current gain as high as near 10^(4),which to our knowledge is the highest one among existing OECT biosensory *** work represents a generic protocol to develop the novel signal-on PEDOT:PSS OECT platform towards biochemical detection and beyond.

关键词： signal-on PEDOT:PSS organic electrochemical transistor biosensing Schottky heterojunction

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Theoretical study on non-sequential double ionization of carbon disulfide with different bond lengths in linearly polarizedlaser fields

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Chinese Physics B 2017年第2期26卷 176-182页

作者： Kai-Li Song Wei-Wei Yu Shuai Ben tong-tong xu Hong-Dan Zhang Pei-Ying Guo Jing Guo Institute of Atomic and Molecular Physics Jilin University Changchun 130012 China School of Physics and Electronic Technology Liaoning Normal University Dalian 116029 China

By using a two-dimensional Monte-Carlo classical ensemble method, we investigate the double ionization（DI） process of the CS_2 molecule with different bond lengths in an 800-nm intense laser field. The double ionization probability presents a ＂knee＂ structure with equilibrium internuclear distance R = 2.9245 a.u.（a.u. is short for atomic unit）. As the bond length of CS increases, the DI probability is enhanced and the ＂knee＂ structure becomes less obvious. In addition,the momentum distribution of double ionized electrons is also investigated, which shows the momentum mostly distributed in the first and third quadrants with equilibrium internuclear distance R = 2.9245 a.u. As the bond length of CS increases,the electron momentum becomes evenly distributed in the four quadrants. Furthermore, the energy distributions and the corresponding trajectories of the double-ionized electrons versus time are also demonstrated, which show that the bond length of CS in the CS_2 molecule plays a key role in the DI process.

关键词： intense laser field non-sequential double ionization classical ensemble method the bond length

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Characteristic analysis of layered PMSEs measured with different elevation angles at VHF based on an experimental case

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Earth and Planetary Physics 2021年第1期5卷 42-51页

作者： ShuCan Ge HaiLong Li Bin xu tong xu Lin Meng MaoYan Wang Abdel Hannachi MengYan Zhu Lina Broman Safi Ullah Abdur Rauf School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China National Key Laboratory of Electromagnetic Environment China Research Institute of Radiowave PropagationQingdao 266107China School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China Department of Meteorology Stockholm UniversityStockholm SE-106-91Sweden

Polar Mesosphere Summer Echoes(PMSEs)are very strong radar echoes observed at altitudes near the polar summer *** of the essential properties of these radar echoes is that they can give useful diagnostic information about the physics of the scattering *** this paper,the related characteristics of PMSEs measured with the European Incoherent SCATter Very High Frequency(EISCAT VHF)224 MHz radar on 13–15 July 2010 are studied at different elevation angles from 78°to 90°.It is found that the PMSEs peak power and strongest PMSEs average power occur at the same elevation *** interesting is that the strongest PMSEs occur at off-vertical angles when a PMSEs has a layered(multilayer)*** reflection may have more significant effects on PMSEs when there are double or multilayer *** explanations regarding these observations are discussed.

关键词： Polar Mesosphere Summer Echoes off-vertical angles layered structure

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Quantum Neural Network for Quantum Neural Computing

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Research 2024年第1期2023卷 71-80页

作者： Min-Gang Zhou Zhi-Ping Liu Hua-Lei Yin Chen-Long Li tong-Kai xu Zeng-Bing Chen National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China MatricTime Digital Technology Co.Ltd. Nanjing 211899China

Neural networks have achieved impressive breakthroughs in both industry and *** to effectively develop neural networks on quantum computing devices is a challenging open ***,we propose a new quantum neural network model for quantum neural computing using(classically controlled)single-qubit operations and measurements on real-world quantum systems with naturally occurring environment-induced decoherence,which greatly reduces the difficulties of physical *** model circumvents the problem that the state-space size grows exponentially with the number of neurons,thereby greatly reducing memory requirements and allowing for fast optimization with traditional optimization *** benchmark our model for handwritten digit recognition and other nonlinear classification *** results show that our model has an amazing nonlinear classification ability and robustness to ***,our model allows quantum computing to be applied in a wider context and inspires the earlier development of a quantum neural computer than standard quantum computers.

关键词： quantum thereby breakthrough

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A Single Cluster Covering for Dodecagonal Quasiperiodic Ship Tiling

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Chinese Physics Letters 2013年第2期30卷 174-177页

作者： LIAO Long-Guang ZHANG Wen-Bin YU tong-xu CAO Ze-Xian Institute of Physics Chinese Academy of SciencesBeijing 100190

The single cluster covering approach provides a plausible mechanism for the formation and stability of octagonal and decagonal quasiperiodic *** dodecagonal quasiperiodic patterns,such a single cluster covering scheme is still *** demonstrate that ship tiling,one of the dodecagonal quasiperiodic structures,can be completely covered by a single cluster.A deflation procedure is devised by assigning proper orientations to different tiles,and nine types of vertex configurations,if the mirror patterns are considered to be identical,have been identified,which fulfill the closure condition under deflation and all result in a T-cluster centered at the vertex.

关键词： cluster closure mirror

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Abnormal perturbations in the ionospheric F2 region before Wenchuan earthquake on 12 May 2008

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Science China Earth Sciences 2010年第11期53卷 1671-1674页

作者： xu tong Hu YanLi Wu Jian Wu ZhenSen Suo YuCheng Feng Jian Huang ChaoJun China Res Inst Radiowave Propagat Natl Key Lab Electromagnet Environm Qingdao 266107 Peoples R China Xidian Univ Sch Sci Xian 710071 Peoples R China Shaanxi Univ Technol Dept Phys Hanzhong 723001 Peoples R China

On 12 May 2008 at 14:28 BJT, a great earthquake (M=8.0) occurred in Wenchuan (31.00°N, 103.40°E), China. The hourly foF2 from 5 to 12 May have been analyzed over four ionospheric observatories: Kunming (25.00°N, 102.70°E), Chongqing (29.50°N, 106.40°E), Lhasa (29.63°N, 91.17°E), and Lanzhou (36.07°N, 103.87°E). The results show that foF2 were notably abnormal from upper bound (the maximum abnormality up to 65% at 17:00 BJT) and lasted about 3 h on 9 May over Chongqing station. Moreover, there were obvious perturbations of foF2 on the same day over other stations except Lhasa. Taking into account that the solar activity and geomagnetic activity were very quiet during this period, we can conclude that the observed positive ionospheric perturbations were likely associated with the imminent earthquake.

关键词： ionospheric perturbations earthquake precursors seismo-ionospheric coupling

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On the radar frequency dependence of polar mesosphere summer echoes

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Earth and Planetary Physics 2020年第6期4卷 571-578页

作者： ShuCan Ge HaiLong Li Lin Meng MaoYan Wang tong xu Safi Ullah Abdur Rauf Abdel Hannachid School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China National Key Laboratory of Electromagnetic Environment China Research Institute of Radio Wave PropagationQingdao 266107China Department of Meteorology Stockholm UniversitySE-106-91StockholmSweden

Polar mesosphere summer echoes(PMSEs)are very strong radar echoes in the polar mesopause in local *** we present the frequency dependence of the volume reflectivity and the effect of energetic particle precipitation on modulated PMSEs by using PMSEs observations carried out by European Incoherent SCATter(EISCAT)heating equipment simultaneously with very high frequency(VHF)radar and ultra high frequency(UHF)radar on 12 July *** to the experimental observations,the PMSEs occurrence rate at VHF was much higher than that at UHF,and the altitude of the PMSEs maximum observed at VHF was higher than that at *** regions were observed by VHF radar between high energetic particle precipitation and the *** addition,highfrequency heating had a very limited impact on PMSEs when the UHF electron density was enhanced because of energetic particle *** addition,an updated qualitative method was used to study the relationship between volume reflectivity and *** volume reflectivity was found to be inversely proportional to the fourth power of radar *** theoretical and experimental results provide a definitive data foundation for further analysis and investigation of the physical mechanism of PMSEs.

关键词： Polar mesosphere summer echoes artificial electron heating volume reflectivity energetic particle precipitation

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A Quasi-1D Potential for Bose Gas Phase Fluctuations

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Chinese Physics Letters 2019年第8期36卷 10-13页

作者： Shi-Feng Yang Zi-tong xu Kai Wang Xiu-Fei Li Yue-Yang Zhai xu-Zong Chen School of Electronics Engineering and Computer Science Peking UniversityBeijing100871 Science and Technology on Inertial Laboratory Beihang UniversityBeijing100191 Beijing Academy of Quantum Information Sciences Beijing100193 Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beijing100191

An elongated trap potential for cold atoms is designed based on a quadrupole-Ioffe *** fluctuations in a Bose-Einstein condensate(BEC),which is confined by the trap,are *** simulate the atom density distribution induced by fluctuation after time of flight from this elongated trap potential and study the temperature measurement method related to the ***,taking advantage of the tight confinement and radio frequency dressing technique,we propose a double well potential for splitting *** results are helpful for improving understanding of low-dimensional quantum gases and provide important guidance for atomic interferometry.

关键词： Bose Gas Phase Fluctuations

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Impacts of Social Media Use

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Psychosomatic Medicine Research 2021年第3期3卷 149-156页

作者： tong-tong xu Editorial Department of Publishing&Printing Shanghai Publishing and Printing CollegeShanghaiChina.

Purposes:This study explores the impact of the influence mechanism of social media on female college students’body dissatisfaction in China and the neglected factors which are not involved in the dominating theoretical framework in this ***:The study adopts a qualitative,in-depth interview ***-structured interviews were conducted with 25 female college students who were concerned about their weight and figures in an attempt to understand their social media use and their perceptions of their body ***:Internalization of the thin-ideal,perceived discrepancy,and appearance comparison moderate the relationship between social media use and female college students’body *** exposed to social media tend to internalize the thin-ideal,perceive a discrepancy between their actual body shape and the thin-ideal,and make appearance comparisons,particularly with their peers;subsequently,these students experience body ***:The ideal image of thinness that is promoted and diffused by social media creates a strict standard for *** college students are likely to suffer from body dissatisfaction the more they consume certain types of social *** to the interactive and virtual quality of social networking platforms,peers play a unique role in the influence mechanism,which is not present in traditional forms of mass media.

关键词： Body dissatisfaction Social media Thin-ideal Body image Tripartite model

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TiO_2 photocatalytic antifungal technique for crops diseases control

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Journal of Environmental Sciences 2006年第2期18卷 397-401页

作者： LU Jian-wei LI Fang-bai GUO Ting LIN Lan-wen HOU Mei-fang LIU tong-xu Faculty of Resource and Environment Center China Agricultural University Wuhan 430070 China Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco-Environment and Soil Sciences Guangzhou 510650 China South China Institute of Botany Chinese Academy of Sciences Guangzhou 510650 China

TiO2 and 1% Ce^3＋-TiO2 prepared by hydrothermal method were characterized by means of XRD and UV-visible diffusive reflectance spectra（DRS）. The results of DRS analysis indicated that the 1% Ce^3＋-TiO2 catalyst had significant optical absorption in the visible region between 400-450 nm because electrons could be excited from the valence band of TiO2 or cerium oxides to Ce 4f level. To investigate the photocatalytic activity of different catalysts for crop fungal disease control, a series of Quine tests were carried out for cucumber powdery mildew and litchi downy blight control in home-made photocatalytic reactor. The results showed that TiO2 photocatalysis technique should be effective to inhibit the growth of fungal diseases to some extent and P-25 had a higher activity for antifungal control than home-made TiO2 catalysts. TiO2-A prepared with Ti（SO4）2 is more active to contro 1 antifungal disease than TiO2-B prepared with TiOSO4 as precursor because the crystalline of TiO2-A was higher than that of TiO2-B. The antifungal index litchi downy blight control was greatly enhanced by doping 1% cerium ion. The antifungal index of 1.0%Ce3^＋-TiO2 was（47.0 ± 4.7）%, （82.2 ± 3.5）%, （100 ±0.0）% under indoor weaker light, solar light and black light, respectively. The results of field experiments showed that the antifungal index of 1.0%Ce^3＋-TiO2 was more than that of P-25. The antifungal index of 1.0%Ce^3＋-TiO2 was （81.7 ± 6.5）%, （67.5 ±4.7）%, （38.6±1.9）% for litchi downy blight, maize southern leaf spot, and rice blast, respectively. It was concluded that TiO2 photocatalysis technique should be an effective way for litchi fungal disease control in practice.

关键词： titanium dioxide photocatalytic fungal disease solar light litchi downy blight

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