Xiaodong Tang

Zhejiang Chinese Medical University

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Wei Bai

East China Normal University

Yuanyuan Zhang

Shandong Academy of Sciences

Jing Yang

Powerchina Huadong Engineering Corporation (China)

Junhao Chu

Shanghai Institute of Technical Physics

Chun‐Gang Duan

East China Normal University

Hui Peng

East China Normal University

Rong Huang

Shanghai Medical College of Fudan University

Ni Zhong

East China Normal University

Ruijuan Qi

East China Normal University

Genshui Wang

Shanghai Institute of Ceramics

Cooperative Institutions

Chinese Academy of Sciences

154

East China Normal University

148

University of Chinese Academy of Sciences

Shanghai Institute of Technical Physics

Fudan University

Shanghai Jiao Tong University

Central South University

Centre National de la Recherche Scientifique

South China University of Technology

Zhejiang University

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Electronic phase diagram of oxygen-deficient SmNiO_3−δepitaxial thin films

Journal of Physics D Applied Physics (2017)

Binjie Chen Yan Sun Nan Yang Ni Zhong Yuanyuan Zhang

Epitaxial SmNiO3−δ thin films were fabricated under various oxygen partial pressures () on (0 0 1)-oriented LaAlO3 substrates by using the pulsed laser deposition method. Continuous control of the metal–insulator transition temperature (TMI) from 350 K to 85 K was achieved by varying from 26 Pa to 0.5 Pa. The reduction of TMI can be attributed to the straightening-out of the out-of-plane Ni–O–Ni bond angle due to the elongation of unit cell volume with decreasing . When > 3 Pa, resistivity anomalies around 200 K are observed in the insulating phase of strained SmNiO3−δ films, suggesting the onset of antiferromagnetic ordering of the Ni sublattices. An electronic phase diagram of the oxygen-deficient SmNiO3−δ films has been established in this work based on the results of the transport measurements.

10.1088/1361-6463/aa6de7

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Citations (10)

Fluorescence quantum efficiency and branch ratio of ytterbium ion in glasses

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2000)

Chun Jiang Liu Hua Qingji Zeng Xiaodong Tang Junzhou Zhang

In this paper the fluorescence quantum efficiencies and branch ratios of ytterbium doped oxide glasses are firstly calculated with equation derived from the reciprocity principle. It is shown that using absorption spectra of ytterbium doped glasses including borate, phosphate, niobosilicate, telluorogermanate and tellurite glasses, the fluorescence quantum efficiencies are obtained and varies from 80% to 99%, increasing with decreasing phonon energy of glass hosts. The branch ratios change slightly as glass hosts with different phonon energy and are about 40%, 30%, 30%, 0% around 970 nm, 1000 nm, 1020 nm, 1050 nm wavelength, respectively.

Ytterbium

Phosphate glass

Quantum yield

10.1117/12.382874

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Citations (2)

Tribological properties and synergistic effects of ionic liquids and silver complexes

Industrial Lubrication and Tribology (2024)

Long Sun Chengjie Jin Xiaodong Tang Kexin Cao Songquan Wang

Purpose The purpose of this paper is to solve the abrupt deterioration of lubricant performance in high-temperature conditions. Design/methodology/approach Three silver pyrazolyl methyl pyridine complexes with different morphologies were synthesized. A four-ball tribometer was used to assess the tribological characteristics as an additive for pentaerythritol oleate both independently and compound with 1-hexyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide. Findings The results showed that when silver complexes and ionic liquids (IL) act independently, sheet silver complex 1 and rod silver complex 2 exhibit good lubricating performance; the optimal antifriction concentration of the ILs is 0.25 Wt.%. The tribological results of the compounds additive of ILs and silver complexes indicate that the wear scar diameter of compound 1 decreased by 16.914%, the wear volume reduced by 7.44% and the lubrication effect surpassed that of the two substances individually; rod compound 2 exhibited an antagonistic effect, intensifying wear; compound 3’s lubrication effect fell between that of the two individual components. Originality/value The compound of sheet silver complexes and ILs effectively solves the agglomeration problem of micro/nano lubricant additives. When the interface fails, self-repair is completed, improving the stability and antiwear performance of the lubricating oil. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2024-0128

Tribometer

10.1108/ilt-04-2024-0128

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Citations (0)

Effect of surface modification of sludge hydropyrolysis residue on the heat storage performance of composite hydrated salt

Journal of Energy Storage (2023)

Haoyu Tian Zewen An Weiwei Cui Xiaodong Tang Deshuai Sun

Supercooling

Phase-change material

Dodecylbenzene

10.1016/j.est.2023.109928

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Citations (2)

Stoichiometry dependence of the optical and minority-carrier lifetime behaviors of CdTe epitaxial films: A low-temperature and time-resolved photoluminescence study

Applied Surface Science (2016)

Kai Tang Xuanting Zhu Liangqing Zhu Wei Bai Jiawei Bai

Cadmium telluride photovoltaics

10.1016/j.apsusc.2016.06.142

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Citations (5)

Tailoring colossal magnetoresistance and magnetoresistive memory effect by two-dimension-like phase competition in electron-doped manganite superlattices

Journal of Physics D Applied Physics (2018)

Ping‐Hua Xiang Ni Zhong Lin Sun Xiaodong Tang Chun‐Gang Duan

Colossal magnetoresistance and giant magnetoresistive memory effect have been demonstrated in the electron-doped manganite superlattices composed of alternatively of G-type antiferromagnetic insulator (G-AFI) layers of CaMnO3 and C-type antiferromagnetic insulator (C-AFI) layers of Ca0.92Ce0.08MnO3. The transport properties of the superlattices strongly depend on the periodicity and the unit cells of each layer. The charge transfer through the interface of the constituent insulators induces appearance of the canted G-type antiferromagnetic metal (cG-AFM) phase in the superlattices. Enhanced colossal magnetoresistance and memory effect emerge in the superlattices composed of the thinner G-AFI layers, which can be attributed to the artificially generated two-dimension-like phase competition between cG-AFM and C-AFI in the charge transfer region. The effective charge transfer through interface provides us an opportunity to control phase separation and thus tailoring electronic properties of electron-doped manganites.

Manganite

Colossal Magnetoresistance

10.1088/1361-6463/aac86c

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Citations (2)

Interface-engineering-enhanced energy storage performance of (Na0.8K0.2)0.5Bi4.5Ti4O15/Bi4LaTi3.5Mg0.5O15 multilayer film capacitors

Materials Science and Engineering B (2024)

Rui Ge Jing Yang Shuang Zeng Yuanyuan Zhang Wei Bai

Film capacitor

Power density

Dielectric absorption

10.1016/j.mseb.2024.117263

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Citations (1)

Dielectrophoretic Arrangement of ZnO Nanorods and Its Influence on the Capacitance

Molecular Crystals and Liquid Crystals (2014)

Weijing Liu Xiaorong Zhu Yuanyuan Zhang Xiaodong Tang

AbstractTwo capacitors composed of ZnO nano-rods were fabricated with and without dielectrophoresis on two identical inter-digitated electrode arrays. Scanning electronic microscope images were presented to verify the aligned and not-aligned arrangement of the nano-rods. The capacitances were measured, and some marked improvements on the capacitor fabricated with dielectrophoresis were obtained. The capacitance value of the sample with dielectrophoresis is 2–3 times larger than that of the sample without dielectrophoresis, and it has a better frequency independence, more excellent dc stability and lower dissipation factor between 30 kHz and 5.3 MHz. The influence of the arrangement of the optimal polarization directions on the capacitance is primarily discussed. The comparative results suggested that the ordered arrangement of the optimal polarization directions of the filling materials was expected to be employed potentially to regulate and control the capacitance during the fabrication process.Keywords: Dielectrophoresisnano-capacitorarrangementpolarization direction FundingThe work is supported by the National Science Foundation of China (Grant No. 11404207, 61204105), the Natural Science Foundation of Shanghai (Grant No. 14ZR417500, 13ZR1412200).

Dielectrophoresis

Nanorod

Rod

10.1080/15421406.2014.967609

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Citations (2)

Microwave hydrothermal synthesis of perovskite BiFeO3 nanoparticles: An insight into the phase purity during the microwave heating process

Materials Chemistry and Physics (2012)

Zhi Wang Junyu Zhu Wenfei Xu Jin Sui Hui Peng

Microwave heating

Hydrothermal Synthesis

10.1016/j.matchemphys.2012.04.053

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Citations (29)

Ultralow‐Power Machine Vision with Self‐Powered Sensor Reservoir

Advanced Science (2022)

Jie Lao Mengge Yan Bobo Tian Chunli Jiang Chunhua Luo

A neuromorphic visual system integrating optoelectronic synapses to perform the in-sensor computing is triggering a revolution due to the reduction of latency and energy consumption. Here it is demonstrated that the dwell time of photon-generated carriers in the space-charge region can be effectively extended by embedding a potential well on the shoulder of Schottky energy barrier. It permits the nonlinear interaction of photocurrents stimulated by spatiotemporal optical signals, which is necessary for in-sensor reservoir computing (RC). The machine vision with the sensor reservoir constituted by designed self-powered Au/P(VDF-TrFE)/Cs2 AgBiBr6 /ITO devices is competent for both static and dynamic vision tasks. It shows an accuracy of 99.97% for face classification and 100% for dynamic vehicle flow recognition. The in-sensor RC system takes advantage of near-zero energy consumption in the reservoir, resulting in decades-time lower training costs than a conventional neural network. This work paves the way for ultralow-power machine vision using photonic devices.

Neuromorphic engineering

10.1002/advs.202106092

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Citations (113)