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| 1 | Understanding the impact of mountain landscapes on water balance in the upper Heihe River watershed in northwestern China显示文摘Estimating the impact of mountain landscape on hydrology or water balance is essential for the sustainable development strategies of water resources.Specifically,understanding how the change of each landscape influences hydrological components will greatly improve the predictability of hydrological responses to mountain landscape changes and thus can help the government make sounder decisions.In the paper,we used the VIC(Variable Infiltration Capacity)model to conduct hydrological modeling in the upper Heihe River watershed,along with a frozen-soil module and a glacier melting module to improve the simulation.The improved model performed satisfactorily.We concluded that there are differences in the runoff generation of mountain landscape both in space and time.About 50% of the total runoff at the catchment outlet were generated in mid-mountain zone(2,900-4,000 m asl),and water was mainly consumed in low mountain region(1,700-2,900 m asl)because of the higher requirements of trees and grasses.The runoff coefficient was 0.37 in the upper Heihe River watershed.Barren landscape produced the largest runoff yields(52.46% of the total runoff)in the upper Heihe River watershed,followed by grassland(34.15%),shrub(9.02%),glacier(3.57%),and forest(0.49%).In order to simulate the impact of landscape change on hydrological components,three landscape change scenarios were designed in the study.Scenario 1,2 and 3 were to convert all shady slope landscapes at 2,000-3,300 m,2,000-3,700 m,and 2,000-4,000 m asl respectively to forest lands,with forest coverage rate increased to 12.4%,28.5% and 42.0%,respectively.The runoff at the catchment outlet correspondingly declined by 3.5%,13.1% and 24.2% under the three scenarios.The forest landscape is very important in water conservation as it reduced the flood peak and increased the base flow.The mountains as 'water towers' play important roles in water resources generation and the impact of mountain landscapes on hydrology is significant. | Jia QIN YongJian DING JinKui WU MingJie GAO ShuHua YI ChuanCheng ZHAO BaiSheng YE Man LI ShengXia WANG | 2013 | Journal of Arid Land2013，5，3： | 6 |
| 2 | Single-molecule optoelectronic devices:physical mechanism and beyond显示文摘Single-molecule devices not only promise to provide an alternative strategy to break through the miniaturization and functionalization bottlenecks faced by traditional semiconductor devices,but also provide a reliable platform for exploration of the intrinsic properties of matters at the single-molecule level.Because the regulation of the electrical properties of single-molecule devices will be a key factor in enabling further advances in the development of molecular electronics,it is necessary to clarify the interactions between the charge transport occurring in the device and the external fields,particularly the optical field.This review mainly introduces the optoelectronic effects that are involved in single-molecule devices,including photoisomerization switching,photoconductance,plasmon-induced excitation,photovoltaic effect,and electroluminescence.We also summarize the optoelectronic mechanisms of single-molecule devices,with particular emphasis on the photoisomerization,photoexcitation,and photo-assisted tunneling processes.Finally,we focus the discussion on the opportunities and challenges arising in the single-molecule optoelectronics field and propose further possible breakthroughs. | Peihui Li Yijian Chen Boyu Wang Mengmeng Li Dong Xiang Chuancheng Jia Xuefeng Guo | 2022 | Opto-Electronic Advances2022，5，5： | 2 |
| 3 | Enhanced photoelectrocatalytic activity of methanol oxidation on TiO2-decorated nanoporous gold显示文摘 | Jia Chuancheng Yin Huiming Ma Houyi | | 0，，36： | 1 |
| 4 | Two-dimensional van der Waals thin film transistors as active matrix for spatially resolved pressure sensing显示文摘The development of pressure sensor arrays capable of distinguishing the shape and texture details of objects is of considerable interest in the emerging fields of smart robots,prostheses,human-machine interfaces,and artificial intelligence(AI).Here we report an integrated pressure sensor array,by combining solution-processed two-dimensional(2D)MoS2 van der Waals(vdW)thin film transistor(TFT)active matrix and conductive micropyramidal pressure-sensitive rubber(PSR)electrodes made of polydimethylsiloxane/carbon nanotube composites,to achieve spatially revolved pressure mapping with excellent contrast and low power consumption.We demonstrate a 10×10 active matrix by using the 2D MoS2 vdW-TFTs with high on-off ratio>10^(6),minimal hysteresis,and excellent device-to-device uniformity.The combination of the vdW-TFT active matrix with the highly uniform micropyramidal PSR electrodes creates an integrated pressure sensing array for spatially resolved pressure mapping.This study demonstrates that the solution-processed 2D vdW-TFTs offer a solution for active-matrix control of pressure sensor arrays,and could be extended for other active-matrix arrays of electronic or optoelectronic devices. | Chao Ma Dong Xu Peiqi Wang Zhaoyang Lin Jingyuan Zhou Chuancheng Jia Jin Huang Shengtao Li Yu Huang Xiangfeng Duan | 2021 | Nano Research2021，14，10： | 1 |
| 5 | Structural Transition Dynamics in Carbon Electrode-Based Single-Molecule Junctions显示文摘Monitoring the structural transitions of individual molecules is of great significance because it helps to in depth explore the properties of molecules and provide diverse possibilities for molecular applications in the fields of chemistry,biology and material science.This review summarizes the strategy of using single-molecule electrical approaches to study molecular structure transitions at the single-molecule level in real time.Specifically,through the use of stable single-molecule devices for real-time electrical monitoring,the process of molecular structure transitions of a single molecule can be investigated,which helps to explore the nature of molecules in chemical and biological systems.In particular,the detection methods have been extended to the investigation of biological macromolecules for monitoring the conformational changes of nucleotide chains in different systems,such as double helix DNA,aptamer and DNA enzyme.In the end,we discuss the future challenges of probing structural transitions of single molecules,and provide prospects for further breakthroughs in this field. | Peihui Li Chuancheng Jia Xuefeng Guo | 2021 | Chinese Journal of Chemistry2021，39，2： | 1 |
| 6 | Robust nanoporous Cu/TiO_(2) ceramic filter membrane with promoted bactericidal function显示文摘Filter membrane technology has been extensively used for water purification.However,due to their high brittleness and biological fouling,filter membranes will gradually deteriorate.Here we develop a robust Cu/TiO_(2) ceramic filter membrane for water treatment,which has excellent inherent antibacterial activities both in the dark and under visible light irradiation.Onedimensional nanobelt TiO_(2) can be sintered into a nanoporous membrane structure by overlapping and interweaving with each other,thereby achieving high flux simultaneously and solving the problem of high brittleness of inorganic ceramics.Meanwhile,such one-dimensional TiO_(2) nanostructures can provide more deposition sites for Cu nanoparticles with inherent antibacterial activity in the dark.To realise the surface plasmon resonance-enhanced antibacterial activity under visible light,Cu/TiO_(2) heterostructures are used. | ZHOU Li SHI ChunYing XU XiaoHong JIA ChuanCheng | 2022 | Science China(Technological Sciences)2022，65，11： | 0 |
| 7 | Monitoring Molecular Dynamics with Single-Molecule Electronic Devices and Fluorescence Techniques显示文摘Monitoring the dynamics of a single molecule provides unique insights into the fundamental physical and chemical properties of individual molecules.Over the past few decades,various approaches have been developed to enable the real-time and high-resolution detection at the single-molecule level.Among them,electrical and optical methods are the most promising tools,for the reason that electrical detection offers high resolution while optical technology provides non-invasive,targeted measurement with the added benefit of visualization.In this review,we summarized the current state-of-the-art electrical and optical techniques for single-molecule measurement and discussed their applications in detecting dynamic events such as conformational isomerizations,intermolecular interactions,chemical reactions,and biomolecular activities.In addition,we discussed the challenges and opportunities in this area and proposed possible directions for future development. | Lan Yang Zhizhuo Zhang Cong Zhao Yani Huo Enyu Zhang Suhang He Chuancheng Jia Xuefeng Guo | 2023 | Chinese Journal of Chemistry2023，41，21： | 0 |
| 8 | Precise control of graphene etching by remote hydrogen plasma显示文摘Graphene with atomically smooth and configuration-specific edges plays the key role in the performance of graphene-based electronic devices.Remote hydrogen plasma etching of graphene has been proven to be an effective way to create smooth edges with a specific zigzag configuration.However,the etching process is still poorly understood.In this study,with the aid of a custom-made plasma-enhanced hydrogen etching(PEHE)system,a detailed graphene etching process by remote hydrogen plasma is presented.Specifically,we find that hydrogen plasma etching of graphene shows strong thickness and temperature dependence.The etching process of single-layer graphene is isotropic.This is opposite to the an isotropic etchi ng effect observed for bilayer and thicker graphe ne with an obvious depe ndence on temperature.On the basis of these observations,a geometrical model was built to illustrate the configuration evolution of graphene edges during etching,which reveals the origi n of the an isotropic etchi ng effect.By further utilizi ng this model,armchair graphe ne edges were also prepared in a con trolled manner for the first time.These investigations offer a better understanding of the etching process for graphene,which should facilitate the fabricati on of graphe ne?based electr onic devices with con trolled edges and the explorati on of more in teresti ng properties of graphe ne. | Bangjun Ma Shizhao Ren Peiqi Wang Chuancheng Jia Xuefeng Guo | 2019 | Nano Research2019，12，1： | 0 |
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