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《化学科学与工程前沿(英文)》 2022年 第16卷 第12期 页码 1772-1781 doi: 10.1007/s11705-022-2197-4
关键词: CO2 electrolysis single-atom catalysts spin polarization proton dynamics in situ IR spectroscopy kinetic isotope effect
Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials
Linxiang WANG, Roderick MELNIK, Fuzai LV
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 287-291 doi: 10.1007/s11465-011-0230-2
The dynamic responses of ferroelectric materials upon external mechanical and electrical stimulations are inherently nonlinear and coupled. In the current paper, a macroscopic differential model is constructed for the coupled hysteretic dynamics via modeling the orientation switching induced in the materials. A non-convex potential energy is constructed with both mechanic and electric field contributions. The governing equations are formulated as nonlinear ordinary differential equations by employing the Euler-Lagrange equation, and can be easily recast into a state space form. Hysteresis loops associated with stress induced polarization switching and butterfly-shaped behavior in ferroelectric materials are also successfully captured. The effects of mechanical loadings on the electrically induced switching are numerically investigated, as well as the mechanically-induced switching with various bias electric fields.
关键词: differential model state space electromechanical switching butterfly effects hysteresis
Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU
《机械工程前沿(英文)》 2020年 第15卷 第2期 页码 256-264 doi: 10.1007/s11465-019-0573-7
关键词: ferroelectric liquid crystal polarization rotator (FLCPR) dual liquid crystal Mueller matrix polarizer design and optimization
Kinetics of enhanced adsorption by polarization for organic pollutants on activated carbon fiber
HAN Yanhe, QUAN Xie, ZHAO Huimin, CHEN Shuo, ZHAO Yazhi
《环境科学与工程前沿(英文)》 2007年 第1卷 第1期 页码 83-88 doi: 10.1007/s11783-007-0016-2
关键词: ACF activated 17-fold enhancement donor-conjugate bridge-acceptor Electrostatic interaction
《能源前沿(英文)》 2021年 第15卷 第3期 页码 781-790 doi: 10.1007/s11708-021-0782-8
关键词: bismuth ferrate ferroelectric polarisation photoelectrochemical (PEC) water splitting graphene oxide (GO) high orientation
饶敏,孙小菡,张明德
《中国工程科学》 2002年 第4卷 第11期 页码 67-70
研究一阶、二阶偏振模色散(PMD)对10 Gb/s和40 Gb/s的光传输系统性能的影响,考虑PMD的统计特性,基于基本偏振态(PSP)理论数值模拟了非归零码(NRZ)和归零码(RZ)在传输过程中产生的脉冲畸变以及系统Q值的变化。结果表明,传输速率越高PMD对系统性能的影响越显著,二阶PMD也将不可忽略。另外,RZ码传输性能明显优于NRZ码并且可通过预啁啾进行改善。
关键词: 偏振模色散(PMD) 非归零码(NRZ) 归零码(RZ) 频率啁啾
卫星通信大型双极化中国版图赋形微带反射阵天线的优化设计 Research Articles
Gang ZHAO, Yong-chang JIAO, Guan-tao CHEN
《信息与电子工程前沿(英文)》 2020年 第21卷 第1期 页码 159-173 doi: 10.1631/FITEE.1900496
关键词: 反射阵;双极化;赋形波束;限相位综合
Long-term effects of electrochemical realkalization on carbonated concrete
Peng ZHU, Ji ZHANG, Wenjun QU
《结构与土木工程前沿(英文)》 2020年 第14卷 第1期 页码 127-137 doi: 10.1007/s11709-019-0583-x
关键词: realkalization concrete carbonation polarization curve corrosion
《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1480-9
• RED performance and stack resistance were studied by EIS and LSV.
关键词: Reverse electrodialysis Electrochemical impedance spectroscopy Concentration polarization Spacer shadow effect
Synthesis of iron(II) complexes with asymmetric N
Wolfgang Bauer, Tanja Ossiander, Birgit Weber
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 400-408 doi: 10.1007/s11705-018-1753-4
The synthesis of new Schiff base-like ligands with asymmetric substituents pattern and their iron complexes with pyridine as axial ligand is described. Two of the ligands and one of the iron(II) complexes were characterized by single crystal X-ray structure analysis. One of the the iron(II) complexes shows spin crossover behavior while the others remain in the high spin state. The influence of the reduced symmetry of the ligand on the properties of the complexes is discussed.
关键词: iron Schiff base-like ligands magnetism spin crossover X-ray structures
Fei Zhang,Minghao Liao,Mingbo Pu,Yinghui Guo,Lianwei Chen,Xiong Li,Qiong He,Tongtong Kang,Xiaoliang Ma,Yuan Ke,Xiangang Luo,
《工程(英文)》 doi: 10.1016/j.eng.2023.07.008
DyFe11Ti磁结构及其自旋重取向的中子衍射研究 Article
Olivier Isnard, Eder J. Kinast
《工程(英文)》 2020年 第6卷 第2期 页码 153-157 doi: 10.1016/j.eng.2019.11.009
本文报道了通过中子粉末衍射探测DyFe11Ti的磁结构及其热演化规律。使用了变温中子衍射技术来测量磁矩及其取向的温度依赖性。Dy和Fe磁矩以反向平行的方式形成亚铁磁性耦合,其2 K时的易磁化方向是基面(a, b)内的[110]轴。随着温度的升高,该磁结构先后经历了两次自旋重取向现象。低温下,Dy磁矩较大,达到9.7μB,而在200 K时磁矩迅速下降到7.5μB。在Fe 8i位置观察到了最大的Fe磁矩。尽管磁结构发生了很大的变化,但在研究的温度范围内ThMn12型晶体结构一直保持不变。在第一阶段的自旋重取向温度(TSR1)时,观察到了易磁化轴的急剧倾斜;易磁化轴与晶体c轴之间的夹角从2 K的90°减小到200 K时的约20°(其中c轴是200 K以上的易磁化轴);同时Dy和Fe磁矩保持反向平行耦合。
关键词: 中子衍射,磁相图,晶体结构
Preparation and influence of performance of anodic catalysts for direct methanol fuel cell
WANG Zhenbo, YIN Geping, SHI Pengfei
《化学科学与工程前沿(英文)》 2007年 第1卷 第1期 页码 20-25 doi: 10.1007/s11705-007-0005-9
关键词: catalyst prepared stability ascension potentiostatic polarization platinum-ruthenium
标题 作者 时间 类型 操作
Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective
期刊论文
Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials
Linxiang WANG, Roderick MELNIK, Fuzai LV
期刊论文
Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix
Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU
期刊论文
Kinetics of enhanced adsorption by polarization for organic pollutants on activated carbon fiber
HAN Yanhe, QUAN Xie, ZHAO Huimin, CHEN Shuo, ZHAO Yazhi
期刊论文
Spontaneous polarization enhanced bismuth ferrate photoelectrode: fabrication and boosted photoelectrochemical
期刊论文
Long-term effects of electrochemical realkalization on carbonated concrete
Peng ZHU, Ji ZHANG, Wenjun QU
期刊论文
Tracing the impact of stack configuration on interface resistances in reverse electrodialysis by in situ electrochemical impedance spectroscopy
期刊论文
Synthesis of iron(II) complexes with asymmetric N
Wolfgang Bauer, Tanja Ossiander, Birgit Weber
期刊论文
A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection
Fei Zhang,Minghao Liao,Mingbo Pu,Yinghui Guo,Lianwei Chen,Xiong Li,Qiong He,Tongtong Kang,Xiaoliang Ma,Yuan Ke,Xiangang Luo,
期刊论文