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| 1 | Temperature dependence of the point defect properties of GaN thin films studied by terahertz time-domain spectroscopy显示文摘The dielectric functions of GaN for the temperature and frequency ranges of 10–300 K and 0.3–1 THz are obtained using terahertz time-domain spectroscopy.It is found that there are oscillations of the dielectric functions at various temperatures.Physically,the oscillation behavior is attributed to the resonance states of the point defects in the material.Furthermore,the dielectric functions are well fitted by the combination of the simple Drude model together with the classical damped oscillator model.According to the values of the fitting parameters,the concentration and electron lifetime of the point defects for various temperatures are determined,and the temperature dependences of them are in accordance with the previously reported result.Therefore,terahertz time-domain spectroscopy can be considered as a promising technique for investigating the relevant characteristics of the point defects in semiconductor materials. | FANG HeNan ZHANG Rong LIU Bin LI YeCao FU DeYi LI Yi XIE ZiLi ZHUANG Zhe ZHENG YouDou WU JingBo JIN BiaoBing CHEN Jian WU PeiHeng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，11： | 6 |
| 2 | Sonication-assisted dispersion of carbon nanotubes in aqueous solutions of the anionic surfactant SDBS:The role of sonication energy显示文摘Sonication is a powerful technique to promote the dispersion of carbon nanotubes(CNTs) and enhance their solubility;this is necessary for CNT applications,especially in the biochemical and biomedical fields.In this study,batch experiments were conducted to evaluate the role of sonication energy on the dispersion of CNTs in the presence of a widely used anionic surfactant,sodium dodecylbenzene sulfonate(SDBS).It was observed that the concentration of dispersed CNTs in the SDBS solution depended on the sonication energy,but not the sonication time or output power of the sonicator alone.The amount of dispersed CNTs was positively correlated with the concentrations of SDBS and CNTs,and the length of the CNTs.The promotion of oxygen-containing functional groups on the dispersed CNTs was observed at relatively low sonication energies.The optimal energy,i.e.the minimum energy supplied by sonication to achieve a saturated suspension of dispersed CNTs in the SDBS solution,was CNT diameter-dependent,because of the larger vdW forces between tubes of smaller diameter.An exponential decay curve was constructed for the optimal energy values as a function of the outer CNT diameter,to assist in determining the energy needed to disperse CNTs. | YANG Kun YI ZiLi JING QingFeng YUE RenLiang JIANG Wei LIN DaoHui | 2013 | Chinese Science Bulletin2013，58，18： | 5 |
| 3 | A novel adaptive pigeon-inspired optimization algorithm based on evolutionary game theory显示文摘Dear editor,In pigeon-inspired optimization(PIO)algorithm[1],the computational process consists of two different stages that originate from the tools pigeons depending on during a flight.Based on this,its variants have been widely used in different domains and have achieved excellent results. | Xingshuo HAI Zili WANG Qiang FENG Yi REN Bo SUN Dezhen YANG | 2021 | Science China(Information Sciences)2021，64，3： | 4 |
| 4 | Resilience optimization for multi-UAV formation reconfiguration via enhanced pigeon-inspired optimization显示文摘This paper develops a novel optimization method oriented to the resilience of multiple Unmanned Aerial Vehicle(multi-UAV)formations to achieve rapid and accurate reconfiguration under random attacks.First,a resilience metric is applied to reflect the effect and rapidity of multi-UAV formation resisting random attacks.Second,an optimization model based on a parameter optimization problem to maximize the system resilience is established.Third,an Adaptive Learning-based Pigeon-Inspired Optimization(ALPIO)algorithm is designed to optimize the resilience value.Finally,typical formation topologies with six UAVs are investigated as a case study to verify the proposed approach.The experimental results indicate that the proposed scheme can achieve resilience optimization for a multi-UAV formation reconfiguration by increasing the system resilience values to 97.53%and 81.4%after random attacks. | Qiang FENG Xingshuo HAI Bo SUN Yi REN Zili WANG Dezhen YANG Yaolong HU Ronggen FENG | 2022 | Chinese Journal of Aeronautics2022，35，1： | 3 |
| 5 | Activity and characteristics of "Oxygen-enriched" highly reactive absorbent for simultaneous flue gas desulfurization and denitrification显示文摘充实氧的高度反应的吸收剂被混合苍蝇灰,石灰和 KMnO 的小数量准备 < 潜水艇 class= “ a-plus-plus ” > 为同时的 desulfurization 和 denitrification 的 4 。移动那么 < 潜水艇 class= “ a-plus-plus ” > 2 并且同时不在一条烟道用这吸收剂被执行煤气的传播的使流体化的床(CFB ) 。最高同时的移动效率,中的 94.5% 个那么 < 潜水艇 class= “ a-plus-plus ” > 2 并且中的 64.2% 个没有,在最佳的实验条件下面被完成。扫描电子显微镜(SEM ) 和附件 X 光检查精力分光计(EDX ) 被用来观察苍蝇灰,石灰,充实氧的高度反应的吸收剂和花的吸收剂的表面特征。一个离子用色层法分离(IC ) 并且化学分析方法被用来在花的吸收剂决定硫酸盐,亚硫酸盐,硝酸盐和亚硝酸根的内容,结果证明硫酸盐和亚硝酸根分别地是为 desulfurization 和 denitrification 的主要产品。那么搬迁的机制 < 潜水艇 class= “ a-plus-plus ” > 2 并且同时不基于 SEM, EDX, IC 和化学药品的分析结果被建议分析方法。 | Yi ZHAO Tianxiang GUO Zili ZANG | 2015 | Frontiers of Environmental Science & Engineering2015，9，2： | 2 |
| 6 | Artificial nanomotors: Fabrication, locomotion characterization, motion manipulation, and biomedical applications显示文摘Artificial nanomotors are nanoscale machines capable of converting surrounding other energy into mechanical motion and thus entering the tissues and cells of organisms.They hold great potential to revolutionize the diagnosis and treatment of diseases by actively targeting the lesion location,though there are many new challenges that arise with decreasing the size to nanoscale.This review sum-marizes and comments on the state-of-the-art artificial nanomotors with ad-vantages and limitations.It starts with the fabrication methods,including common physical vapor deposition and colloidal chemistry methods,followed by the locomotion characterization and motion manipulation.Then,the in vitro and in vivo biomedical applications are introduced in detail.The challenges and future prospects are discussed at the end. | Liangmeng Wang Xiaomeng Hao Zhixue Gao Zili Yang Yi Long Ming Luo Jianguo Guan | 2022 | Interdisciplinary Materials2022，1，2： | 1 |
| 7 | A critical review on the technique and mechanism of microwave-based denitrification in flue gas显示文摘Microwave radiation has received extensive attention due to its significant thermal and nonthermal effects, and the development of MW-based denitrification in flue gas has become one of the most promising methods to avoid the defects of ammonia escape, high temperature and cost in traditional SCR. This review introduces the thermal and non-thermal effects of microwaves and divides MW-based denitrification methods into MW reduction and oxidation denitrification, systematically summarizes these denitrification methods, including MW discharge reduction, MW-induced catalytic reduction using active carbon, molecular sieves, metal oxides(transition metals, perovskites, etc.), MW-induced oxidation denitrification with and without additional oxidant, and discusses their removal pathway and mechanism. Finally, several research prospects and directions regarding the development of microwave-based denitrification methods are provided. | Bo Yuan Zhen Qian Zili Zhangc Le Fu Shihang Pan Runlong Hao Yi Zhao | 2022 | Journal of Environmental Sciences2022，34，10： | 1 |
| 8 | A rapid and consistent near infrared spectroscopic assay for biomass enzymatic digestibility upon various physical and chemical pretreatments in Miscanthus显示文摘 | Jiangfeng Huang Tao Xia Ao Li Bin Yu Qing Li Yuanyuan Tu Wei Zhang Zili Yi Liangcai Peng | 2012 | Bioresource Technology2012，，： | 1 |
| 9 | Three lignocellulose features that distinctively affect biomass enzymatic digestibility under NaOH and H 2 SO 4 pretreatments in Miscanthus显示文摘 | Wei Zhang Zili Yi Jiangfeng Huang Fengcheng Li Bo Hao Ming Li Shufen Hong Yezi Lv Wei Sun Arthur Ragauskas Fan Hu Junhua Peng Liangcai Peng | 2012 | Bioresource Technology2012，，： | 1 |
| 10 | Security bootstrap model of key pre-sharing by polynomial group in mobile Ad Hoc Network显示文摘 | FENG Li LI Zili ZHANG Yi | 2009 | Journal of Network and Computer Applications2009，32，4： | 1 |
| 11 | Preparation of InYO_3 catalyst and its application in photodegradation of molasses fermentation wastewater显示文摘An InYO 3 photocatalyst was prepared through a precipitation method and used for the degradation of molasses fermentation wastewater. The InYO 3 photocatalyst characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy, surface area and porosimetry. Energy band structures and density of states were achieved using the Cambridge Serial Total Energy package (CASTEP). The results indicated that the photodegradation of molasses fermentation wastewater was significantly enhanced in the presence of InYO 3 when compared with PbWO 4 . The calcination temperature was found to have a significant effect on the photocatalytic activity of InYO 3 . Specifically, InYO 3 calcined at 700°C had a considerably larger surface area and lower reflectance intensity and showed higher photocatalytic activity. The mathematical simulation results indicated that InYO 3 is a direct band gap semiconductor, and its conduction band is composed of In 5p and Y 4d orbitals, whereas its valence band is composed of O 2p and In 5s orbitals. | Zuzeng Qin Yi Liang Zili Liu Weiqing Jiang | 2011 | Journal of Environmental Sciences2011，23，7： | 1 |
| 12 | Simulation of a new style vertical HVPE system显示文摘In this paper,we simulate a new style vertical HVPE reactor by using computational fluid dynamics program FLUENT.In order to find the best parameter on the growth rate of Gallium nitride(GaN),we change the distance between the inlet and the substrate,GaCl and NH3 inlets,and also we add substrate rotation separately.With the increase of the distance between the substrate and the gas inlet,GaN deposition rate decreases and the uniformity becomes better.The results show that the optimal distance in this new-style vertical hydride vapour phase epitaxy(HVPE) system is 4 cm.Besides,as the distance between the GaCl inlet and the NH3 inlet changes,the uniformity of GaN deposition varies.Our findings indicate that the optimal distance is 3 cm.Furthermore,it is found that substrate rotation also affects the growth rate of GaN. | ZHOU An XIU XiangQian ZHANG Rong XIE ZiLi LIU Bin HAN Ping GU ShuLin SHI Yi ZHENG YouDou | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，12： | 1 |
| 13 | The growth and properties of an m-plane InN epilayer on LiAlO_2 (100) by metal-organic chemical vapor deposition显示文摘The m-plane InN (1100) epilayers have been grown on a LiAlO2 (100) substrate by a two-step growth method using a metal-organic chemical vapor deposition (MOCVD) system. The low temperature InN buffer layer (LT-InN) is introduced to overcome the drawbacks of thermal instability of LiAlO2 (LAO) and to relieve the strains due to a large thermal mismatch between LAO and InN. Then the high temperature m-plane InN (1100) epilayers (HT-InN) were grown. The results of X-ray diffraction (XRD) suggest that the m-plane InN (1100) epilayer is a single crystal. The X-ray rocking curves (scans) (XRC) and atomic force microscopy (AFM) indicate that the m-plane InN (1100) epilayer has anisotropic crystallographic properties. The PL studies of the materials reveal a remarkable energy band gap structure around 0.70 eV at 15 K. | XIE ZiLi ZHANG Rong FU DeYi LIU Bin XIU XiangQian HUA XueMei ZHAO Hong CHEN Peng HAN Ping SHI Yi ZHENG YouDou | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，7： | 0 |
| 14 | Transmembrane transport of polycyclic aromatic hydrocarbons by bacteria and functional regulation of membrane proteins显示文摘In recent years,increasing research has been conducted on transmembrane transport processes and the mechanisms behind the microbial breakdown of polycyclic aromatic hydrocarbons(PAHs),including the role of membrane proteins in transmembrane transport and the mode of transmission.This article explains the adsorption,uptake and transmembrane transport of PAHs by bacteria,the regulation of membrane protein function during the transmembrane transport.There are three different regulation mechanisms for uptake,depending on the state and size of the oil droplets relative to the size of the microbial cells,which are(i)direct adhesion,(ii)emulsification and pseudosolubilization,and(iii)interfacial uptake.Furthermore,two main transmembrane transport modes are introduced,which are(i)active transport and(ii)passive uptake and active efflux mechanism.Meanwhile,introduce the proteomics and single cell analysis technology used to address these areas of research,such as Isobaric tags for relative and absolute quantitation(iTRAQ)technology and Nano Secondary ion mass spectrometry(Nano-SIMS).Additionally,analyze the changes in morphology and structure and the characteristics of microbial cell membranes in the process of transmembrane transport.Finally,recognize the microscopic mechanism of PAHs biodegradation in terms of cell and membrane proteins are of great theoretical and practical significance for understanding the factors that influence the efficient degradation of PAHs contaminants in soil and for remediating the PAHs contamination in this area with biotechnology. | Hongqi Wang Ruhan Jiang Dekang Kong Zili Liu Xiaoxiong Wu Jie Xu Yi Li | 2020 | Frontiers of Environmental Science & Engineering2020，14，1： | 0 |
| 15 | Identifying cooperative transcription factors by combining ChiP-chip data and knockout data显示文摘 | Yi Yang Zili Zhang Yixue Li Xin-Guang Zhu Qi Liu | 2010 | Cell Research2010，20，11： | 0 |
| 16 | Low-threshold lasing in a plasmonic laser using nanoplate InGaN/GaN显示文摘Plasmonic nanolaser as a new type of ultra-small laser,has gain wide interests due to its breaking diffraction limit of light and fast carrier dynamics characters.Normally,the main problem that need to be solved for plasmonic nanolaser is high loss induced by optical and ohmic losses,which leads to the low quality factor.In this work,InGaN/GaN nanoplate plasmonic nanolaser with large interface area were designed and fabricated,where the overlap between SPs and excitons can be enhanced.The lasing threshold is calculated to be~6.36 kW/cm^(2),where the full width at half maximum(FWHM)drops from 27 to 4 nm.And the fast decay time at 502 nm(sharp peak of stimulated lasing)is estimated to be 0.42 ns.Enhanced lasing characters are mainly attributed to the strong confinement of electromagnetic wave in the low refractive index material,which improve the near field coupling between SPs and excitons.Such plasmonic laser should be useful in data storage applications,biological application,light communication,especially for optoelectronic devices integrated into a system on a chip. | Ting Zhi Tao Tao Xiaoyan Liu Junjun Xue Jin Wang Zhikuo Tao Yi Li Zili Xie Bin Liu | 2021 | Journal of Semiconductors2021，42，12： | 0 |
| 17 | The growth temperatures dependence of optical and electrical properties of InN films显示文摘InN films grown on sapphire at different substrate temperatures from 550℃ to 700℃ by metalorganic chemical vapor deposition were investigated. The low-temperature GaN nucleation layer with high-temperature annealing (1100℃) was used as a buffer for main InN layer growth. X-ray diffraction and Raman scattering measurements reveal that the quality of InN films can be improved by increasing the growth temperature to 600℃. Further high substrate temperatures may promote the thermal decomposition of InN films and result in poor crystallinity and surface morphology. The photoluminescence and Hall measurements were employed to characterize the optical and electrical properties of InN films,which also indicates strong growth temperature dependence. The InN films grown at temperature of 600℃ show not only a high mobility with low carrier concentration,but also a strong infrared emission band located around 0.7 eV. For a 600 nm thick InN film grown at 600℃,the Hall mobility achieves up to 938 cm2/Vs with electron concen-tration of 3.9×1018 cm-3. | LIU Bin ZHANG Rong XIE ZiLi XIU XiangQian LI Liang KONG JieYing YU HuiQiang HAN Pin GU ShuLin SHI Yi ZHENG YouDou TANG ChenGuang CHEN YongHai WANG ZhanGuo | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，3： | 0 |
| 18 | Carrier transport and luminescence properties of n-type GaN显示文摘The surface morphology,electrical properties and optical properties of Si doped n-type GaN were investigated. The intentional SiH4 doped GaN films were grown by metal organic chemical vapor deposition with the electron concentration varying from 3×1016 cm-3 to 5.4×1018 cm-3. The surface morphology shows that the roughness and dislocation pits increase as the mass flow rate of SiH4 increases,which indicates that the quality of GaN degrades gradually. The activation energy of Si in GaN with different n concentrations varies from 12 to 22 meV,which may originate from the interactions of donor wave functions. The carrier transport mechanism with increasing temperature from 100 to 420 K was concluded as the complex effect of both impurity scattering and phonon scattering. The position of the near band edge emission peak was determined by both renormalization of the band gap and B-M effect. The intensity variations of the yellow luminescence could be explained by the change of Ga vacancy concentration caused by Si doping. | ZHANG Zeng ZHANG Rong XIE ZiLi LIU Bin XIU XiangQian JIANG RuoLian HAN Ping GU ShuLin SHI Yi ZHENG YouDou | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，8： | 0 |
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