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19篇 您的检索式:作者名="Pingan Yang"
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1Recent advances in preparation,properties and device applications of twodimensional h-BN and its vertical heterostructures显示文摘Two-dimensional(2D) layered materials,such as graphene,hexagonal boron nitride(h-BN),molybdenum disulfide(Mo S_2/,have attracted tremendous interest due to their atom-thickness structures and excellent physical properties.h-BN has predominant advantages as the dielectric substrate in FET devices due to its outstanding properties such as chemically inert surface,being free of dangling bonds and surface charge traps,especially the large-band-gap insulativity.h-BN involved vertical heterostructures have been widely exploited during the past few years.Such heterostructures adopting h-BN as dielectric layers exhibit enhanced electronic performance,and provide further possibilities for device engineering.Besides,a series of intriguing physical phenomena are observed in certain vertical heterostructures,such as superlattice potential induced replication of Dirac points,band gap tuning,Hofstadter butterfly states,gate-dependent pseudospin mixing.Herein we focus on the rapid developments of h-BN synthesis and fabrication of vertical heterostructures devices based on h-BN,and review the novel properties as well as the potential applications of the heterostructures composed of h-BN.Huihui Yang Feng Gao Mingjin Dai Dechang Jia Yu Zhou Pingan Hu 2017Journal of Semiconductors2017,38,3:3
2Multifunctional electrospinning composite fibers for orthotopic cancer treatment in vivo显示文摘一个多功能的、双药的搬运人平台成功地被构造。核心壳组织了 NaGdF 4:Yb/Er@NaGdF4:Yb@mSiO2-polyethylene 乙二醇(作为 UCNPS 缩短了) 与 antitumor 药装载的 nanoparticles, doxorubicin (纪录影片) 被合并到 poly (-caprolactone)( 打印机控制语言) 和明胶与消炎的药装载了,消炎痛(MC ) 到形式 nanofibrous 织物(作为 MC/UCNPS/DOX 标记) 经由 electrospinning 过程。结果的多功能的旋转片能通过手术作为 orthotopic 化疗在老鼠的肿瘤地点直接被植入由从 mesoporous 硅二氧化物的控制版本纪录影片(通过 NaGdF 4:Yb/Er@NaGdF4:Yb 的双模型的成像在 vivo 在 MC/UCNPS/DOX 嵌入的 SiO 2) 和 upconversion fluorescence/magnetic 回声。Yinyin Chen Shi Liu Zhiyao Hou Pingan Ma Dongmei Yang Chunxia Li Jun Lin 2015Nano Research2015,8,6:2
3Dynamical Stability of Cantilevered Pipe Conveying Fluid with Inerter-Based Dynamic Vibration Absorber显示文摘Cantilevered pipe conveying fluid may become unstable and flutter instability would occur when the velocity of the fluid flow in the pipe exceeds a critical value.In the present study,the theoretical model of a cantilevered fluid-conveying pipe attached by an inerter-based dynamic vibration absorber(IDVA)is proposed and the stability of this dynamical system is explored.Based on linear governing equations of the pipe and the IDVA,the effects of damping coefficient,weight,inerter,location and spring stiffness of the IDVAon the critical flow velocities of the pipe system is examined.It is shown that the stability of the pipe may be significantly affected by the IDVA.In many cases,the stability of the cantilevered pipe can be enhanced by designing the parameter values of the IDVA.By solving nonlinear governing equations of the dynamical system,the nonlinear oscillations of the pipe with IDVA for sufficiently high flow velocity beyond the critical value are determined,showing that the oscillation amplitudes of the pipe can also be suppressed to some extent with a suitable design of the IDVA.Zhiyuan Liu Xin Tan Xiaobo Liu Pingan Chen Ke Yi Tianzhi Yang Qiao Ni Lin Wang 2020Computer Modeling in Engineering & Sciences2020,,11:2
4Self-sensing actuators with programmable actuation performances for soft robots显示文摘Designing soft robots that are able to perceive unstructured,dynamic environments and their deformations has been a long-term goal.Previously reported self-sensing soft actuators were mostly constructed via integrating separate actuators and sensors.The actuation performances and the sensing reliability are affected owing to the unmatched materials and weak connections.Realizing a seamless integration of soft actuators and sensors remains a grand challenge.Here,we report a fabrication strategy to endow soft actuators with sensing capability and programmable actuation performances.The foam inside the actuator functions as actuator and sensor simultaneously,effectively addressing the conformability and connection reliability issues that existed in current self-sensing actuators.The actuators are lightweight(a decrease of 58%in weight),powerful(lifting a load of 433 times of its own weight),and versatile(coupling twisting and contraction motions).Furthermore,the actuators are able to detect multiple physical stimuli with high reliability,demonstrating their exteroception and proprioception capability.Two self-sensing soft robotic prototypes,including a bionic bicep and a bionic neck,are constructed to illustrate their multifunctionality.Our study opens up new possibilities for the design of soft actuators and has promising potential in a variety of applications,ranging from human-robot interaction,soft orthotics,to wearable robotics.JIAO ZhongDong YE ZhiQiu ZHU PingAn TANG Wei YANG HuaYong ZOU Jun 2023Science China(Technological Sciences)2023,66,11:2
5Influence of biochars on plant uptake and dissipation of two pesticides in an agricultural soil显示文摘Yang Xiaobing Ying Guangguo Peng Pingan 2010Journal of Agricultural and Food Chemistry2010,58,13:1
6Influence of biochars on plant uptake and dissipation of two pesticides in an agricultural soil显示文摘Yang Xiaobing Ying Guangguo Peng Pingan 2010Journal of Agricultural and Food Chemistry2010,58,13:1
7Carrier control of MoS2 nanoflakes by functional self-as- sembled monolayers 显示文摘Yang Li Cheng-Yan Xu PingAn Hu Liang Zhen 2013ACS Nano2013,7,9:1
8Fluid-driven artificialmuscles: bio-design, manufacturing, sensing, control, and applications显示文摘Developing artificial muscles that can replace biological muscles to accomplish various tasks iswhat we have long been aiming for.Recent advances in flexible materials and 3D printing technology greatly promote the development of artificial muscle technology.A variety of flexible material-based artificial muscles that are driven by different external stimuli,including pressure,voltage,light,magnetism,temperature,etc.,have been developed.Among these,fluid-driven artificial muscles(FAMs),which can convert the power of fluid(gas or liquid)into the force output and displacement of flexible materials,are the most widely used actuation methods for industrial robots,medical instruments,and human-assisted devices due to their simplicity,excellent safety,large actuation force,high energy efficiency,and low cost.Herein,the bio-design,manufacturing,sensing,control,and applications of FAMs are introduced,including conventional pneumatic/hydraulic artificial muscles and several innovative artificial muscles driven by functional fluids.What’s more,the challenges and future directions of FAMs are discussed.Chao Zhang Pingan Zhu Yangqiao Lin Wei Tang Zhongdong Jiao Huayong Yang Jun Zou 2021Bio-Design and Manufacturing2021,4,1:1
9Effects of carbon nanotubes and its functionalization on the thermal and flammability properties of polypropylene/wood flour composites 显示文摘Fu Shenyuan Song Pingan Yang Haitang 2010Journal of Materials Science2010,45,:1
10显示文摘Fu Shenyuan Song Pingan Yang Haitang 2010Journal ofMaterials Science2010,45,13:1
11Genetic variation and phylogenetic analysis of porcine circovirus type 2 infections in central China显示文摘Chunlong Mu Qingyuan Yang Yina Zhang Yonghui Zhou Jixi Zhang Darren P. Martin Pingan Xia Baoan Cui 2012Virus Genes2012,,3:1
12Molecular characterization of sulfur compounds in some special sulfur-rich Chinese crude oils by FT-ICR MS显示文摘Routine GC/MS analysis may apply to the volatilized Low-Molecular-Weight compounds in saturate and aromatic hydrocarbon fractions;thus,relative studies using this technique inevitably bring about some limitations on distribution of miscellaneous sulfur atom.In this article,Fourier Transform Ion Cyclotron Resonance Mass Spectrometry(FT-ICR MS)with high resolution is employed to investigate the distribution of organic sulfur compounds(OSCs)in the crude oil typically derived from the Eogene carbonate-evaporite sediments with further chemical compositional characterization in molecular level by miscellaneous atomic type,carbon number,and double bond equivalent(DBE).A variety of miscellaneous atomic types with S1,S2,S3,OS,OS2,O2S,O2S2,NS,and NOS etc.(S1 means those OSCs with one sulfur atom in a molecule)were identified in OSCs in these oil samples.High levels of alkyl thioether series compounds with one ring structure were presented mainly in the crude oil in the Jianghan Basin whereas high amounts of benzothiophene,dibenzothiophene etc.compounds with higher values in DBE and carbon number range occurred in the sulfur-rich heavy oil in the Jinxian Sag.Although carbonate-evaporite sediments deposited in the saline lacustrine facies in the Eogene basin both occurred in the Jinxian Sag and Jianghan Basin,obviously,they possess different chemical diagenetic pathway of sulfur under various microbial reactions,leading to diverse distributional characteristics on biomarkers,OSCs,and even different hydrocarbon generation mechanism of immature crude oil.LU Hong SHI Quan MA QingLin SHI Yang LIU JinZhong SHENG GuoYing PENG PingAn 2014Science China Earth Sciences2014,57,6:1
13Highly sensitive and dynamically stable strain sensors based on porous-designed Fe nanowires/multi-walled carbon nanotubes with stable bi-conducting networks显示文摘Flexible sensors for high strain sensitivity and dynamic stability are important for the development of human-interactive and health-monitoring devices.However,establishing a stable conductive network with low-conductivity material filling that can resist tensile strain failure and achieve high device performance still faces significant challenges.Herein,a highly stretchable and sensitive strain sensor with strong dynamic stability and low conductive materials filling was fabricated based on highly conductive multi-walled carbon nanotubes(MWCNTs)and Fe nanowires(NWs)to construct a porous-designed bi-conducting network using a salt sacrificial template approach.The porous-designed Fe NW/MWCNT strain sensor(PFMS)with low material filling(3.6 wt.%Fe NWs and 10.6 wt.%MWCNTs)showed high sensitivity with a gauge factor(GF)of 134.98(strain range 0–22%)and 569.37(strain range 22%–60%),which is much higher compared with the pure MWCNT strain sensor with a GF of 7.46.This is attributed to the significant change in the contact area and contact resistance of the Fe NW/MWCNT bi-conducting network during tensile strain.In addition,the PFMS exhibited high repetitive stability over 2000 stretching-releasing cycles.When attached to the human body,the PFMS functions as a health-monitoring device,that can accurately distinguish human motions such as the bending of fingers,knees,and elbows.Finally,the proposed strategy pens a novel avenue for constructing porous conductive networks using polymer composites and is highly competitive for developing high-performance strain sensors.YANG PingAn LIU ZhongBang LUO JiuFei LI Rui LU Yi HUANG Xin ZHANG Qiang ZHOU ZhiHao 2022Science China(Technological Sciences)2022,65,12:0
14Reconstruction of harmonic signals based on bispectrum显示文摘A method for accurate reconstruction of the harmonic signals from bispectrum is presented. Based on the analysis of the measured harmonic signal, a sinusoid signal with Ophase, 1-amplitude and half of the fundamental frequency combines with the measured signal to form a combined signal, and then the bispectrum analysis is carried out to reconstruct the phase and the amplitude of the measured signal accurately. Without the zero-phase assumption of the fundamental component, using the new method eliminates the phase shifting between the calculated Fourier phase and the true Fourier phase in the existing signal retrieval methods based on bispectrum. The simulation results show the effectiveness of the new method.FAN Yangyu SUN Jincai LI Pingan XU Jiadong (Northwestern Polytechnical University Xi’an 710072) SHANG Jiuhao (Northwest Institute of Light Industry Xian’yang 712081) 2000Chinese Journal of Acoustics2000,19,1:0
15Fast growth of graphene on SiO2/Si substrates by atmospheric pressure chemical vapor deposition with floating metal catalysts显示文摘Graphene on dielectric substrates is essential for its electronic applications. Graphene is typically synthesized on the surface of metal and then transferred to an appropriate substrate for fabricating device applications. This post growth transfer process is detrimental to the quality and performance of the as-grown graphene. Therefore, direct growth of graphene films on dielectric substrates without any transfer process is highly desirable. However, fast growth of graphene on dielectric substrates remains challenging. Here, we demonstrate a transfer-free chemical vapor deposition (CVD) method to directly grow graphene films on dielectric substrates at fast growth rate using Cu as floating catalyst. A large area (centimeter level) graphene can be grown within 15 min using this CVD method, which is increased by 500 times compared to other direct CVD growth on dielectric substrate in the literatures. This research presents a significant progress in transfer-free growth of graphene and graphene device applications.Na Liu Jia Zhang Yunfeng Qiu Jie Yang PingAn Hu 2016Science China Chemistry2016,59,6:0
16Feature extraction of ship-radiated noise using higher-order spectrum显示文摘The features of the ship noises are analyzed by using the higher-order spectrum (HOS) after studying their distribution. The results show that the different ship noise has different ranges of the main frequency. The main frequencies of the first class ships are less than 120 Hz, while the second class ships drop in 130 Hz -- 320 Hz. The different relationship between w1 and w2 corresponds to different bispectrum graph. There are the same results in the trispectrum. The feature vector is consist of the wls which correspond to the maximum bispectrum B(wl, wl) and the maximum trispectrum B(wl, w1,wl) respectively, the al, w2 which correspond to the maximum bispectrum B(wl, w2).FAN Yangyu SHANG Jiuhao (Northwest Institute of Light Industry Xian’yang 712081) SUN Jincai LI Pingan XU Jiadong (Northwestern Polytechnical University Xi’an 710072) 2000Chinese Journal of Acoustics2000,19,2:0
17Fast thermal responsive separators toward long-life and safe lithium metal batteries显示文摘Lithium metal batteries(LMBs)have been extensively investigated during the past decades because of their ultrahigh energy densities.With the increasing demand for energy density,however,the safety issue of LMBs has become a significant challenge.In particular,localized areas of increased temperature(namely,hotspots)may be induced and even exacerbated within LMBs by uneven current distribution,internal short circuits,or inadequate heat dissipation,which significantly sacrifices battery safety and cycle life.Here,we report the rational design and fabrication of a fast thermal responsive separator capable of inhibiting the growth of lithium dendrites and mitigating thermal propagation,thereby reducing the risk of thermal runaway.The as-achieved separator comprises both an electrospun membrane using a phase change material with superior thermal-storage ability and a thermally conductive modification layer of hexagonal boron nitride nanosheets with a fast heat-transfer feature.It is demonstrated that such a unique integration of heat conduction and heat storage enables the functional separator with attractive abilities to mitigate hotspots and inhibit the growth of lithium dendrites upon the cycling of LMBs.Moreover,pouch cells with the thermal-responsive separator,as well as numerical simulations,verify much enhanced safety and cycle life of LMBs.This work may offer a new conceptual design of intelligent separators that acts as a functional unit encapsulated within a single cell to boost in-situ thermal management,which will help to develop high-safety and energy-dense LMBs.Pingan Li Zhifang Liu Yitong Peng Shanshan Yang Tao Meng Yunhuan Hu Yingjun Jiang Hao Sun Qi Li Xianluo Hu 2024Nano Research2024,17,4:0
18Platinum modified MoS_(2)monolayer for adsorption and gas sensing of SF_(6)decomposition products:a DFT study显示文摘In the long-running of sulphur hexafluoride(SF_(6))-insulated equipment,SF_(6) inevitably decomposes to various decomposition products under electric discharge,including SOF_(2) and SO2F_(2).In this work,single Pt modified molybdenum disulphide(Pt-MoS_(2))monolayer,and double Pt modified molybdenum disulphide(Pt_(2)-MoS_(2))monolayer are proposed to analyse its adsorption and sensing properties to SOF_(2) and SO2F_(2) with single and double gas molecules adsorption based on density functional theory.The adsorption energy,density of states,and molecular orbit theory are employed to analyse the adsorption and sensing mechanism.It turns out that the Pt-MoS_(2) and Pt_(2)-MoS_(2) present outstanding adsorption capacity to gas molecules.Specifically,double SOF_(2) adsorption on Pt_(2)-MoS_(2) shows the best adsorption performance,and the conductivity of the adsorption system changes the most in the adsorption process.Overall,both Pt-MoS_(2) and Pt_(2)-MoS_(2) perform as an excellent gas sensor.This study provides a theoretical basis to develop Pt-MoS_(2) and Pt_(2)-MoS_(2) based materials for SOF_(2) and SO2F_(2) detection in SF_(6)-insulated equipment.Yingang Gui Jinzhi Shi Pingan Yang Tao Li Chao Tang Lingna Xu 2020High Voltage2020,5,4:0
19Single-cell technologies:From research to application显示文摘In recent years,more and more single-cell technologies have been developed.A vast amount of single-cell omics data has been generated by large projects,such as the Human Cell Atlas,the Mouse Cell Atlas,the Mouse RNA Atlas,the Mouse ATAC Atlas,and the Plant Cell Atlas.Based on these single-cell big data,thousands of bioinformatics algorithms for quality control,clustering,cell-type annotation,developmental inference,cell-cell transition,cell-cell interaction,and spatial analysis are developed.With powerful experimental single-cell technology and state-of-the-art big data analysis methods based on artificial intelligence,the molecular landscape at the single-cell level can be revealed.Lu Wen Guoqiang Li Tao Huang Wei Geng Hao Pei Jialiang Yang Miao Zhu Pengfei Zhang Rui Hou Geng Tian Wentao Su Jian Chen Dake Zhang Pingan Zhu Wei Zhang Xiuxin Zhang Ning Zhang Yunlong Zhao Xin Cao Guangdun Peng Xianwen Ren Nan Jiang Caihuan Tian Zi-Jiang Chen 2022The Innovation2022,3,6:0
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