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| 1 | All-dielectric three-element transmissive Huygens’ metasurface performing anomalous refraction显示文摘Metasurfaces have pioneered a new avenue for advanced wave-front engineering.Among the various types of metasurfaces,Huygens'metasurfaces are thought to be a novel paradigm for flat optical devices.Enabled by spectrally overlapped electric resonance and magnetic resonance,Huygens'metasurfaces are imparted with high transmission and full phase coverage of 2π,which makes them capable of realizing high-efficiency wave-front control.However,a defect of Huygens'metasurfaces is that their phase profiles and transmissive responses are often sensitive to the interaction of neighboring Huygens'elements.Consequently,the original assigned phase distribution can be distorted.In this work,we present our design strategy of transmissive Huygens'metasurfaces performing anomalous refraction.We illustrate the investigation of Huygens'elements,realizing the overlapping between an electric dipole and magnetic dipole resonance based on cross-shaped structures.We find that the traditional discrete equidistant-phase design method is not enough to realize a transmissive Huygens'surface due to the interaction between neighboring Huygens'elements.Therefore,we introduce an extra optimization process on the element spacing to palliate the phase distortion resulting from the element interaction.Based on this method,we successfully design unequally spaced three-element transmissive metasurfaces exhibiting anomalous refraction effect.The anomalous refractive angle of the designed Huygens'metasurface is 30°,which exceeds the angles of most present transmissive Huygens'metasurfaces.A transmissive efficiency of 83.5%is numerically derived at the operating wavelength.The far-field electric distribution shows that about 93%of transmissive light is directed along the 30°refractive direction.The deflection angle can be tuned by adjusting the number of Huygens'elements in one metasurface unit cell.The design strategies used in this paper can be inspiring for other functional Huygens'metasurface schemes. | CHANG LIU LEI CHEN TIESHENG WU YUMIN LIU JING LI YU WANG ZHONGYUAN YU HAN YE LI YU | 2019 | Photonics Research2019，7，12： | 3 |
| 2 | Industrial TiO2 based nacreous pigments as functional building materials:Photocatalytic removal of NO显示文摘In this paper,the photocatalytic activity of industrial titanium dioxide(TiO2)based nacreous pigments was researched as functional building materials for photocatalytic NO remove.Three industrial TiO2 based nacreous pigments were selected to estimate the photocatalytic activity for NO remove.This study is a good proof that pearlescent pigments can eliminate NO,and its performance is positively correlated with its titanium dioxide content.And this research will widen the application of nacreous pigments in functional building materials,and provide a new way to eliminate in door nitric oxide pollution. | Jue Li Li Wang Chunqiu Han Fengyun Su Yumin Leng Liqun Ye | 2020 | Chinese Journal of Chemical Engineering2020，28，10： | 3 |
| 3 | High-efficiency all-dielectric transmission metasurface for linearly polarized light in the visible region显示文摘We propose and numerically investigate an efficient transmission-mode metasurface that consists of quasicontinuous trapezoid-shaped crystalline silicon nanoantennas on a quartz substrate. This metasurface provides a linear phase gradient and realizes both full 2π phase shift and high transmission efficiency in the operating wavelength range from 740 to 780 nm. At the central wavelength around 751 nm, the total transmission efficiency is up to 88.0% and the section of the desired anomalous refraction is 80.4%. The anomalous refraction angle is 29.62°, and larger refraction angle can be achieved by changing the period of the super cell. We demonstrate a refraction angle as large as 38.59°, and the anomalous transmission efficiency reaches 76.6% at wavelength of 741 nm. It is worth mentioning that the structure is much simpler than conventional metasurfaces based on arrays of discrete nanoantennas. Our research may pave the way for designing efficient all-dielectric phase-gradient metasurfaces and applying them in integrated optical devices for wavefront control. | LIU YANG DONG WU YUMIN LIU CHANG LIU ZENGHUI XU HUI LI ZHONGYUAN YU LI YU RAN YE | 2018 | Photonics Research2018，6，6： | 2 |
| 4 | Discussion on calculation of the local flexibility due to the crack in a pipe显示文摘 | Yumin He Junjie Ye Xuefeng Chen Zhengjia He | 2009 | Mechanical Systems and Signal Processing2009，23，： | 1 |
| 5 | Discus- sion on calculation of the local flexibility due to the crack in a pipe显示文摘 | He Yumin Ye Junjie Chen Xuefeng | 2009 | Mechanical Systems and Signal Processing2009，23，3： | 1 |
| 6 | Effect of Different Drying Processes on the Protein Degradation and Sensory Quality of Layú: A Chinese Dry-Curing Grass Carp显示文摘 | Jinjie Zhang Zhongxiang Fang Yumin Cao Yuting Xu Yaqin Hu Xingqian Ye Wenge Yang | 2013 | 2013 (13-1)2013，，13： | 1 |
| 7 | Numerical investigations of an optical switch based on a silicon stripe waveguide embedded with vanadium dioxide layers显示文摘A novel scheme for the design of an ultra-compact and high-performance optical switch is proposed and investigated numerically. Based on a standard silicon(Si) photonic stripe waveguide, a section of hyperbolic metamaterials(HMM) consisting of 20-pair alternating vanadium dioxide (VO_2)∕Si thin layers is inserted to realize the switching of fundamental TE mode propagation. Finite-element-method simulation results show that, with the help of an HMM with a size of 400 nm × 220 nm × 200 nm(width × height × length), the ON/OFF switching for fundamental TE mode propagation in an Si waveguide can be characterized by modulation depth(MD) of5.6 d B and insertion loss(IL) of 1.25 dB. It also allows for a relatively wide operating bandwidth of 215 nm maintaining MD > 5 dB and IL < 1.25 dB. Furthermore, we discuss that the tungsten-doped VO_2 layers could be useful for reducing metal-insulator-transition temperature and thus improving switching performance. In general, our findings may provide some useful ideas for optical switch design and application in an on-chip all-optical communication system with a demanding integration level. | LEI CHEN HAN YE YUMIN LIU DONG WU RUI MA ZHONGYUAN YU | 2017 | Photonics Research2017，5，4： | 1 |
| 8 | Auton- omous Underwater Robot Research Status and Prospect 显示文摘 | LI Ye CHANG Wentian SUN Yushan SU Yumin | 2007 | Robot Technique and Application2007，，： | 1 |
| 9 | A unified formulation for hollow and solid concrete filled steel tube columns under axial compression显示文摘 | YuMin Zha Xiaoxiong Ye Jianqiao | 2010 | Engineering Structures2010，32，10： | 1 |
| 10 | High-performance supercapacitors based on free-standing SiC@PEDOT nanowires with robust cycling stability显示文摘Conductive polymers as one of the candidate materials with pseudocapacitor behavior have inspired wide attentions,because of their high conductivity,fexibility,low cost and excellent processability.However,the intrinsically poor cycling stability induced by the volume change over the doping/dedoping redox process limits their practical applications.Herein,we report the exploration of electrodes with robust cycling capacity for supercapacitors(SCs),which are rationally designed by coating conductive poly(3,4-ethylenedioxythiophene)(PEDOT)around free-standing SiC nanowires using an all-dry oxidative chemical vaper deposition(oCVD)method.The as-constructed SiC@PEDOT nanowire architecture enables a specific capacitance of 26.53 m F/cm^(2)at 0.2 m A/cm^(2),which is~370%to that of SiC nanowire counterpart(7.04 m F/cm^(2)).Moreover,their aqueous-based SCs exhibit robust cycling stability with104%capacity retention after 10000 cycles,which is among the highest values achieved for PEDOTbased SCs. | Wenna Liu Xiaoxiao Li Weijun Li Yumin Ye Hong Wang Peipei Su Weiyou Yang Ya Yang | 2022 | Journal of Energy Chemistry2022，31，3： | 1 |
| 11 | Strain distribution and electronic structures of the InAs/GaAs quantum ring molecule in an applied electric field显示文摘The strain distribution and electronic structures of the InAs/GaAs quantum ring molecule are calculated via the finite element method.In our model,three identical InAs quantum rings are aligned vertically and embedded in the cubic GaAs barrier.Considering the band edge modification induced by the strain,the electronic ground state and the dependence of ground state energy on geometric parameters of the quantum ring molecule are investigated.The change of localization of the wavefunction resulting from the applied electric field along the growth direction is observed.The ground state energy decreases as the electric field intensity increases in a parabolic-like mode.The electric field changes the monotonic dependence of the energy level on the inter-ring distance into a non-monotonic one.However,the electric field has no effect on the relationships between the energy level and other geometric parameters such as the inner radius and outer radius. | JIA BoYong,YU ZhongYuan,LIU YuMin,YAO WenJie,YE Han & FENG Hao Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications),Ministry of Education,Beijing 100876,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，9： | 0 |
| 12 | Dissecting the contributions of organic nitrogen aerosols to global atmospheric nitrogen deposition and implications for ecosystems显示文摘Atmospheric deposition of particulate organic nitrogen(ON_(p))is a significant process in the global nitrogen cycle and may be pivotally important for N-limited ecosystems.However,past models largely overlo oked the spatial and chemical inhomogeneity of atmospheric ON_(p)and were thus deficient in assessing global ON_(p)impacts.We constructed a comprehensive global model of atmospheric gaseous and particulate organic nitrogen(ON),including the latest knowledge on emissions and secondary formations.Using this model,we simulated global atmospheric ON_(p)abundances consistent with observations.Our estimated global atmospheric ON deposition was 26 Tg N yr^(-1),predominantly in the form of ON_(p)(23 Tg N yr^(-1))and mostly from wildfires(37%),oceans(22%)and aqueous productions(17%).Globally,ON_(p)contributed as much as 40%to 80%of the total N deposition downwind of biomass-burning regions.Atmospheric ON_(p)deposition thus constituted the dominant external N supply to the N-limited boreal forests,tundras and the Arctic Ocean,and its importance maybe amplified in a future warming climate. | Yumin Li Tzung-May Fu Jian Zhen Yu Xu Yu Qi Chen Ruqian Miao Yang Zhou Aoxing Zhang Jianhuai Ye Xin Yang Shu Tao Hongbin Liu Weiqi Yao | 2023 | National Science Review2023，10，12： | 0 |
| 13 | From Forced Demolition to Reversed Monopoly,Appeals for the Perfection of Laws:Reflections on Demolition Case in Qiaodong Jiedao,Taiyuan显示文摘Inventory planning is the mainstream of China's urban and rural planning in the future. However, during the implementation of inventory planning, demolition issues generally cause serious social contradictions, and lead to a great increase in the implementation cost of inventory planning. This paper takes the demolition of shantytowns in Qiaodong Jiedao, Taiyuan as an example, reviews the process of urban demolition from forced promotion by the government to reversed monopoly by the owners of demolished buildings, and points out that ambiguous connotation of public interest, lack of authority to define public interest, and unclear boundary between public interest protection and private interest protection are the important reasons leading to forced demolition and reversed monopoly. Meanwhile, requesting high compensation on grounds of the protection of right of habitation is also a major reason leading to reversed monopoly in the demolition of urban shantytowns. This paper proposes establishing a demolition legal system with balanced rights under the guidance of balance theory, that is, constantly improving laws concerning demolition from both the substantive and procedural aspects to make rights and obligations clear and balanced and to make procedure complete and fair on one hand, and formulating a soft legal system containing incentive clauses to encourage equal cooperation between multiple subjects and to complete demolition through market, on the other hand. | Liu Xiaobing Ye Yumin Li Caige(译) | 2017 | China City Planning Review2017，26，2： | 0 |
| 14 | Path Choice of Rural Land Transfer in China显示文摘Establishing rural land collective property right system with clear ownership,complete powers and functions,smooth transfer,and strict protection is the basic guarantee to the equal exchange of land elements. In this study,the reform of relevant legal systems to China's rural land transfer was introduced firstly,and then the guiding ideology of China's rural land transfer was proposed. Finally,the ways of practicing rural land transfer in China were discussed. Based on the premise of insisting on and improving the strictest land preservation system,farmers should have the right to occupy,use,and transfer their contracted land,and they can transfer their land contracting and management right in ways of exchange,subcontracting,renting,stock cooperation,and trust. Exploring the ways of equal exchange of land elements according to local conditions is an important political and economic issue concerning the livelihood and development of farmers in China,so it should be conducted under the guidance of the correct ideas to integrate scattered land in China's rural areas,develop moderate-scale management,shorten the income gap between urban and rural areas,and realize balancing development of urban and rural areas in China. | Yumin DING Ye LING Yang WU | 2016 | Asian Agricultural Research2016，8，7： | 0 |
| 15 | State-of-the-art advances in vacancy defect engineering of graphitic carbon nitride for solar water splitting显示文摘Developing low-cost,efficient,and stable photocatalysts is one of the most promising methods for large-scale solar water splitting.As a metal-free semiconductor material with suitable band gap,graphitic carbon nitride(g-C_(3)N_(4))has attracted attention in the field of photocatalysis,which is mainly attributed to its fascinating physicochemical and photoelectronic properties.However,several inherent limitations and shortcomings—involving high recombination rate of photocarriers,insufficient reaction kinetics,and optical absorption—impede the practical applicability of g-C_(3)N_(4).As an effective strategy,vacancy defect engineering has been widely used for breaking through the current limitations,considering its ability to optimize the electronic structure and surface morphology of g-C_(3)N_(4) to obtain the desired photocatalytic activity.This review summarizes the recent progress of vacancy defect engineered g-C_(3)N_(4) for solar water splitting.The fundamentals of solar water splitting with g-C_(3)N_(4) are discussed first.We then focus on the fabrication strategies and effect of vacancy generated in g-C_(3)N_(4).The advances of vacancy-modified g-C_(3)N_(4) photocatalysts toward solar water splitting are discussed next.Finally,the current challenges and future opportunities of vacancy-modified g-C_(3)N_(4) are summarized.This review aims to provide a theoretical basis and guidance for future research on the design and development of highly efficient defective g-C_(3)N_(4). | Jie Li Kaige Huang Yanbin Huang Yumin Ye Marcin Ziółek Zhijie Wang Shizhong Yue Mengmeng Ma Jun Liu Kong Liu Shengchun Qu Zhi Zhao Yanjun Zhang Zhanguo Wang | 2023 | Journal of Semiconductors2023，44，8： | 0 |
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