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15篇 您的检索式:作者名="Songliu Yuan"
    题名 作者 年代 出处 被引量
1Nanoparticle monolayer-based flexible strain gauge with ultrafast dynamic response for acoustic vibration detection显示文摘The relatively poor dynamic response of current flexible strain gauges has prevented their wide adoption in portable electronics. In this work, we present a greatly improved flexible strain gauge, where one strip of Au nanoparticle (NP) monolayer assembled on a polyethylene terephthalate film is utilized as the active unit. The proposed flexible gauge is capable of responding to applied stimuli without detectable hysteresis via electron tunneling between adjacent nanoparticles within the Au NP monolayer. Based on experimental quantification of the time and frequency domain dependence of the electrical resistance of the proposed strain gauge, acoustic vibrations in the frequency range of 1 to 20,000 Hz could be reliably detected. In addition to being used to measure musical tone, audible speech, and creature vocalization, as demonstrated in this study, the ultrafast dynamic response of this flexible strain gauge can be used in a wide range of applications, including miniaturized vibratory sensors, safe entrance guard management systems, and ultrasensitive pressure sensors.Lizhi Yi Weihong Jiao Ke Wu Lihua Qian Xunxing Yu Qi Xia Kuanmin Mao Songliu Yuan Shuai Wang Yingtao Jiang 2015Nano Research2015,8,9:6
2Magnetism in Mn and Co doped ZnO bulk samples显示文摘Bulk samples with nominal composition Zn0.95Co0.05O and Zn0.92Co0.05Mn0.03O were fabricated by a solid-state reaction method at 600℃.X-ray diffraction experiment showed that the peaks of secondary phase Co3O4 with a cubic structure were visible in both samples,besides the main peaks of wurtzite structure as ZnO.Magnetization measurement indicated that doping Co alone can induce ferromag- netism in ZnO itself,while the introduction of Mn significantly enhances ferromagnetism.However, both samples showed different magnetic behavior at temperatures below 50 K.It was also noted that ferromagnetic coupling interaction was weakened due to the presence of antiferromagnetic Co3O4.WANG YongQiang YUAN SongLiu SONG YunXing LIU Li TIAN ZhaoMing LI Pai ZHOU YuanMing LI YunLong YIN ShiYan 2007Chinese Science Bulletin2007,52,8:4
3Effects of Pr on the structure and magnetic properties of FePt alloys显示文摘The effects of Pr on the structure and magnetic properties of PrxFe60.5-xPt39.5 alloys (x = 0, 0.5, 1.0, and 1.5) were investigated. X-ray diffraction data indicated that the phase transition temperature of FePt based alloys from disordered face-centered-cubic to ordered face-centered-tetragonal cubic decreases with the increase in Pr concentration. Pr plays the role of a grain refiner and it can enhance the exchange coupling between soft magnetic phase and hard magnetic phase. The results indicate that the replacement of Fe by Pr can significantly improve the remanence and coercivity of the Fe60.5Pt39.5 alloy. These results can be explained on the basis of phase transformation and microstructure. Both the remanence ratio and coercivity of the FePt based alloy as a function of the Pr content are increased by the optimum addition of 0.5 at.% Pr.CHENG Gang GU Zhengfei ZGOU Huaiying CHENG Jun YUAN Songliu 2007Rare Metals2007,26,1:3
4Closely packed nanoparticle monolayer as a strain gauge fabricated by convective assembly at a confined angle显示文摘Chao Zhang Juan Li Shanshan Yang Weihong Jiao Shuang Xiao Mingqing Zou Songliu Yuan Fei Xiao Shuai Wang Lihua Qian 2014Nano Research2014,7,6:2
5Controllable defects implantation in MoS2 grown by chemical vapor deposition for photoluminescence enhancement显示文摘Ke Wu Zhe Li Jibo Tang Xianglong Lv Hailing Wang Ruichun Luo Pan Liu Lihua Qian Shunping Zhang Songliu Yuan 2018Nano Research2018,11,8:2
6Ultrasensitive strain gauge with tunable temperature coefficient of resistivity显示文摘我们与象 8.3 桴 ? 牧睯桴漠 ? 慃佃猼'T? 一样低的记录察觉限制基于一部不连续的金属电影表明一个 ultrasensitive 紧张计量器 ? ??挠祲瑳污 s 吗?Lizhi Yi Weihong Jiao Changming Zhu Ke Wu Chao Zhang Lihua Qian Shuai Wang Yingtao Jiang Songliu Yuan 2016Nano Research2016,9,5:1
7Transport-magnetism correlation and colossal magnetoresistance in mixed-valent manganites显示文摘Li Jianqing Yuan Songliu 2005Journal of Wuhan University of Technology - Mater Sci Ed2005,,2:1
8Memory Effect up to Room-temperature in Ni/Ni_2P Core-shell Structured Nanoparticles显示文摘Memory effect has been studied in the system using magnetic nanoparticles with Ni nanocore encapsulated by non-magnetic and oxidation-resistant Ni2P nanoshell acquired through surface-phosphatizing Ni nanoparticles. The self-assembled array with interparticle spacing of about 6 nm shows memory effect up to 200 K below its average blocking temperature of 260 K. And reducing the interparticle spacing of the self-assembled array via annealing can further enlarge the temperature range of memory effect up to room-temperature. The memory effect can be understood based on the thermal relaxation theory of single-domain magnetic nanoparticles. Furthermore, the read-write magnetic coding is realized based on the temperature changes, using the memory effect up to room-temperature, which may be useful for future memory devices.段寒凝 YUAN Songliu ZHENG Xianfeng TIAN Zhaoming 2013Journal of Wuhan University of Technology(Materials Science)2013,28,3:0
9Electrical Transport and Magnetic Properties of La_(0.67)Ca_(0.33)Mn_(1-x)Cr_xO_3 and La_(0.67+x)Ca_(0.33-x)Mn_(1-x)Cr_xO_3(0.04≤x≤0.08)显示文摘A comparative study for two different series,La 0.67 Ca 0.33 Mn 1-x Cr x O3 and La 0.67+x Ca 0.33-x Mn 1- x Cr x O 3 ,is performed with x changing from 0.04 to 0.08 through measurements of zero-field resistivity(ρ), magnetoresistance(MR)and ac susceptibility(χ)as functions of temperature(T).For the second group,a single insulator-metal transition was characterized by the resistivity maximum appears inρvs.T curve.For the first group,besides the resistivity peak appearing at higher temperatures,the sample shows evidence for the existence of another peak appearing at lower temperatures.Compared to the first group,the second group shows a significant enhancement in MR effect,while the measurement ofχ-T dependence does not display obvious differences for the two series.Different behaviors observed in the two series are discussed by considering possible exchange interaction between Mn3+ion and Cr3+ion.XIAO Xun YUAN Songliu YIN Shiyan CHEN Ling REN Guangming MIAO Juhong YU Gongqi 2008Journal of Wuhan University of Technology(Materials Science)2008,23,4:0
10Nanoporous Au-Sn with solute strain for simultaneously enhanced selectivity and durability during electrochemical CO2 reduction显示文摘Electrochemical carbon dioxide reduction meditated by metallic catalysts suffers from restricted selectivity and competition from hydrogen evolution, which sensitively depends on ambiguous contributions of alloying and strain state in bimetallic catalysts. Herein, nanoporous Au-Sn(NPAS) containing trace tin solute in Au lattices is delicately designed to convince real strain effect, while eliminating other undesirable factors, such as alloying, crystal facets and surface composition. Compared with nanoporous gold(NPG), the NPAS with a solute strain of ~2.2% enables more efficient CO2-to-CO conversion, with an efficiency as high as 92% at-0.85 V versus reversible hydrogen electrode(vs. RHE), and the high activity can retain for more than 8 h. The combination of HRTEM and surface valence band photoemission spectra reveals that the tensile strain on the surface of 3 D nanoporous structure promotes the catalytic activity by shifting up the d-band center and strengthening the adsorption of key intermediate *COOH. A small amount of Sn solute in the nanoporous alloy can prevent ligament coarsening effectively and improve the electrochemical stability.Xianglong Lu Tianshui Yu Hailing Wang Lihua Qian Ruichun Luo Pan Liu Yao Yu Lin Liu Pengxiang Lei Songliu Yuan 2020Journal of Materials Science & Technology2020,36,8:0
11Single-Phase Ternary Compounds with a Disordered Lattice and Liquid Metal Phase for High-Performance Li-Ion Battery Anodes显示文摘Si is considered as the promising anode materials for lithium-ion batteries(LIBs)owing to their high capacities of 4200 mAh g-1and natural abundancy.However,severe electrode pulverization and poor electronic and Li-ionic conductivities hinder their practical applications.To resolve the afore-mentioned problems,we first demonstrate a cation-mixed disordered lattice and unique Li storage mechanism of single-phase ternary GaSiP_(2)compound,where the liquid metallic Ga and highly reactive P are incorporated into Si through a ball milling method.As confirmed by experimental and theoretical analyses,the introduced Ga and P enables to achieve the stronger resistance against volume variation and metallic conductivity,respectively,while the cation-mixed lattice provides the faster Li-ionic diffusion capability than those of the parent GaP and Si phases.The resulting GaSiP_(2)electrodes delivered the high specific capacity of 1615 mAh g-1and high initial Coulombic efficiency of 91%,while the graphite-modified GaSiP_(2)(GaSiP_(2)@C)achieved 83%of capacity retention after 900 cycles and high-rate capacity of 800 at 10,000 mA g-1.Furthermore,the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)//Ga SiP_(2)@C full cells achieved the high specific capacity of 1049 mAh g-1after 100 cycles,paving a way for the rational design of high-performance LIB anode materials.Yanhong Li Lei Zhang Hung-Yu Yen Yucun Zhou Gun Jang Songliu Yuan Jeng-Han Wang Peixun Xiong Meilin Liu Ho Seok Park Wenwu Li 2023Nano-Micro Letters2023,15,5:0
12A class of Ga-Al-P-based compounds with disordered lattice as advanced anode materials for Li-ion batteries显示文摘Phosphides possess large reversible capacity, small voltage hysteresis, and high energy efficiency, thus promising to be new anode candidates to replace commercial graphite for Li-ion batteries(LIBs).Through a facile mechanochemistry method, we prepare a novel ternary phosphide of Ga0.5Al0.5P whose crystalline structure is determined to be a cation-disordered cubic zinc sulfide structure according to XRD refinement. As an anode for LIBs, the Ga0.5Al0.5P delivers a reversible capacity of 1,352 mA h g^(-1)at100 mA g^(-1)with an initial Coulombic efficiency(ICE) up to 90.0% based on a reversible Li-storage mechanism integrating intercalation and subsequent conversion processes as confirmed by various characterizations techniques including in-situ XRD, ex-situ Raman, and XPS and electrochemical characterizations.Graphite-modified Ga0.5Al0.5P exhibits a long-lasting cycling stability of retaining 1,182 mA h g^(-1)after300 cycles at 100 m A g^(-1), and 625 mA h g^(-1)after 800 cycles at 2,000 mA g^(-1), and a high-rate performance of remaining 342 m A h g^(-1)at 20,000 mA g^(-1). The outstanding electrochemical performances can be attributed to enhanced reaction kinetics enabled by the capacitive behaviors and the faster Liion diffusion enabled by the cation-mixing. Importantly, by tuning the cationic ratio, we develop a novel series of cation-mixed compounds of Ga_(1/3)Al_(2/3)P, Ga_(1/4)Al_(3/4)P, Ga_(1/5)Al_(4/5)P, Ga_(2/3)Al_(1/3)P, Ga_(3/4)Al_(1/4)P, and Ga_(4/5)Al_(1/5)P, which demonstrate large capacity, high ICE, and suitable anode potentials. Broadly, these compounds with disordered lattices probably present novel physicochemical properties, and high electrochemical performances, thus providing a new perspective for new materials design.Yanhong Li Peixun Xiong Lei Zhang Songliu Yuan Wenwu Li 2023Journal of Energy Chemistry2023,,4:0
13Effects of A-Cation Mismatch σ~2 on Transport Properties of Manganese Doped Oxide Perovskites显示文摘Three factors control the transition from paramagnetic insulator to ferromagnetic metal. The first is the hole doping. The second factor is the average ionic radius of the A site cation rA. The last one concerns the ionic size mismatch σ2 at the A site. In order to study the effect of σ2, a series of samples were prepared with constant value of x and rA. The measurement of resistivity versus temperature dependence under magnetic field (0 and 5 T) indicates that the insulator-metal transition temperature moves towards the low temperature region with increasing σ2. The magnetoresistance of La 0.53 Sm 0.17 Sr 0.3 MnO3 obtains its maximum at room temperature. The experimental observation was discussed based on the measurement of the transport properties.Shang Jinglin Yuan Songliu Cao Heng Wang Yongqiang Yin Shiyan 2006Journal of Rare Earths2006,24,5:0
14Cu doping effect on Mn sites of La_(2/3)Ca_(1/3) MnO_3 system显示文摘The temperature dependence of resistance and magnetoresistance at 77 K for Cu-doped La 2/3Ca 1/3Mn 1-xCu xO-3 have been investigated. Besides the transition similar to the Cu-free sample at ~260 K, a new transition at lower temperature appears for Cu-doped samples. The new transition moves toward low temperature with increasing of Cu content. A new conductive proceeding related to Cu ion may exist. Magnetoresistance at liquid nitrogen shows that MR increased three orders when x is changed from 0 to 0 15. Moreover, the main variation of magnetoresistance is below the field of 1 T.SUN Xia, TANG Ping, CHEN Yue, HUANG Zhen, LI Guang,LIU Zhimin, CHEN Zhiyou, WANG Sheng and YUAN Songliu High Magnetic Field Laboratory, Institute of Plasma Physics, Chinese Academy of Sciences, P. O. Box 1126, Hefei 230031, China 1998Chinese Science Bulletin1998,43,17:0
15Self-Supported Nanoporous Gold with Gradient Tin Oxide for Sustainable and Efficient Hydrogen Evolution in Neutral Media显示文摘Hydrogen evolution reaction(HER)in neutral medium suffers from slow kinetics as compared to that in alkaline or acidic conditions,owing to larger Ohmic loss and low proton concentration.Here we report that a self-supported nanoporous Au-SnO_(x)(NP Au-SnO_(x))catalyst with gradient tin oxide surface could significantly enhance HER activity in neutral buffer solution(0.2 M PBS).The NP Au-SnO_(x)catalyst exhibits a low onset overpotential of 38 mV and a small Tafel slope of 79 mV dec^(−1).The current density of 10 mA cm^(−2)is manifested at an overpotential as low as 148 mV,representing the comparable performance of Pt/C catalyst.This high catalytic activity can retain at least 10 hours without any detectable decay.The superior HER activity is proposed to originate from the gradient SnO_(x)structure and metal/oxide interfaces in nanoporous ligaments.Furthermore,the X-ray photoelectron spectroscopy reveals that the gradient oxide in the ligament is remarkably stable during long-term reaction.Xianglong Lu Tianshui Yu Hailing Wang Ruichun Luo Pan Liu Songliu Yuan Lihua Qian 2020Journal of Renewable Materials2020,8,2:0
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