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< Page ,Total 33 >
Dissociation of [HCCH]2+ to H2+ and C2+: a benchmark reaction involving H migration, H-H combination, and C-H bond cleavage. PubMed
期刊论文 | 2018 | Physical chemistry chemical physics : PCCP
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We report the formation of H2+ and C2+ from dissociation of acetylene induced by α-particle irradiation. The unusual dissociation channel [C2H2]2+ → H2+ + C2+ is unambiguously identified by measuring the time-of-flight of both fragmented ions in coincidence. Our quantum chemical calculation confirms the existence of this dissociation pathway. It shows that [HCCH]2+ is firstly populated to the 3Π excited electronic state, followed by acetylene-vinylidene isomerization, and finally the vinylidene-like intermediate dissociates to H2+ and C2+. This dissociation channel is the simplest prototypical reaction involving H migration, H-H combination, and C-H bond cleavage. The current study plays an important role for understanding the H2+/H3+ formation reactions from organic di-cations in an interstellar medium.

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GB/T 7714 Xu Shenyue , Zhao Hongyan , Zhu Xiaolong et al. Dissociation of [HCCH]2+ to H2+ and C2+: a benchmark reaction involving H migration, H-H combination, and C-H bond cleavage. [J]. | Physical chemistry chemical physics : PCCP , 2018 .
MLA Xu Shenyue et al. "Dissociation of [HCCH]2+ to H2+ and C2+: a benchmark reaction involving H migration, H-H combination, and C-H bond cleavage." . | Physical chemistry chemical physics : PCCP (2018) .
APA Xu Shenyue , Zhao Hongyan , Zhu Xiaolong , Guo Dalong , Feng Wentian , Lau Kai-Chung et al. Dissociation of [HCCH]2+ to H2+ and C2+: a benchmark reaction involving H migration, H-H combination, and C-H bond cleavage. . | Physical chemistry chemical physics : PCCP , 2018 .
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Tip-enhanced Raman scattering of DNA aptamers for Listeria monocytogenes SCIE PubMed Scopus
期刊论文 | 2018 , 13 (3) | BIOINTERPHASES
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Optical detection and conformational mapping of aptamers are important for improving medical and biosensing technologies and for better understanding of biological processes at the molecular level. The authors investigate the vibrational signals of deoxyribonucleic acid aptamers specific to Listeria monocytogenes immobilized on gold substrates using tip-enhanced Raman scattering (TERS) spectroscopy and nanoscale imaging. The authors compare topographic and nano-optical signals and investigate the fluctuations of the position-dependent TERS spectra. They perform spatial TERS mapping with 3nm step size and discuss the limitation of the resulting spatial resolution under the ambient conditions. TERS mapping provides information about the chemical composition and conformation of aptamers and paves the way to future label-free biosensing. Published by the AVS.

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GB/T 7714 He, Siyu , Li, Hongyuan , Gomes, Carmen L. et al. Tip-enhanced Raman scattering of DNA aptamers for Listeria monocytogenes [J]. | BIOINTERPHASES , 2018 , 13 (3) .
MLA He, Siyu et al. "Tip-enhanced Raman scattering of DNA aptamers for Listeria monocytogenes" . | BIOINTERPHASES 13 . 3 (2018) .
APA He, Siyu , Li, Hongyuan , Gomes, Carmen L. , Voronine, Dmitri V. . Tip-enhanced Raman scattering of DNA aptamers for Listeria monocytogenes . | BIOINTERPHASES , 2018 , 13 (3) .
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Wettability of porous anodic aluminium oxide membranes with three-dimensional, layered nanostructures EI SCIE Scopus
期刊论文 | 2018 , 25 (6) , 1707-1714 | JOURNAL OF POROUS MATERIALS
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The architecture-dependent wettability of three-dimensional (3D), porous anodic aluminium oxide (AAO) membranes with varying surface morphologies including hierarchical, mesh and honeycomb nanostructures is reported. The surface morphology and underlayer structure play different roles in regulating the wetting behaviour of the AAO membranes. For the mild AAO membranes, the wetting behaviour of the ultra-thin top layer is dominated by the surface morphology in which the water contact angles (WCAs) of the AAO membranes with hierarchical, mesh and honeycomb structures are approximately 113.7 degrees +/- 4.6 degrees, 94.9 degrees +/- 0.7 degrees and 98.8 degrees +/- 5.8 degrees, respectively. The wetting behaviour of the 3D, layered AAO membranes is dominated by both the surface morphology and the underlayer structure. Notably, the WCA of the mild AAO membrane with a layered hierarchical structure increases in the second layer (increase in the hole density). The WCAs of the three kinds of layered hard AAO membranes decrease in the second layer (increase in the hole depth) and then decrease slowly or increase in the third transition layer (decrease in the hole density). The WCAs of all the AAO membranes decrease linearly at different rates with the formation of the ordered bottom layer. The above results can facilitate the engineering of nanostructures for controlling the surface wetting behaviour of materials and devices for applications in multiple fields.

Keyword :

Wettability Layered structure Surface morphology Anodic aluminium oxide

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GB/T 7714 Zhang, Weiwei , Huang, Liqing , Zi, Chunyan et al. Wettability of porous anodic aluminium oxide membranes with three-dimensional, layered nanostructures [J]. | JOURNAL OF POROUS MATERIALS , 2018 , 25 (6) : 1707-1714 .
MLA Zhang, Weiwei et al. "Wettability of porous anodic aluminium oxide membranes with three-dimensional, layered nanostructures" . | JOURNAL OF POROUS MATERIALS 25 . 6 (2018) : 1707-1714 .
APA Zhang, Weiwei , Huang, Liqing , Zi, Chunyan , Cai, Yakun , Zhang, Yu , Zhou, Xueyuan et al. Wettability of porous anodic aluminium oxide membranes with three-dimensional, layered nanostructures . | JOURNAL OF POROUS MATERIALS , 2018 , 25 (6) , 1707-1714 .
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A Simple Dynamic Model for Assessing the Forces on Ankle Joint under Different Loads and Different Gaits EI Scopus CSCD PKU
期刊论文 | 2018 , 52 (5) , 162-168 | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
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To evaluate the forces on the ankle joint in different situations so as to meet the development requirements of lower limb protection appliances and footwear, a simple lower limb dynamic model is established. The lower limb is simulated by the two-dimensional rigid rod model, in which the ankle joint and the hip joint are simplified as hinge connections, and the muscle forces are expressed by unknown forces at both ends of the calf. Using the measured plantar pressure, the joint torque is determined based on the equilibrium equation of torques. For the dynamic model, the corresponding kinetic equation is derived. Accurate ankle joint force data are obtained through high-speed photography and force platform, and the dynamic data is processed by the action analysis system (APAS). The kinetic model can be used to assess the forces on the ankle joint, and evaluate the force difference among different gaits (such as walking, running and stepping) and between the conditions with and without load. Moreover, the model can be applied to force analysis of ankle joint with wearing different footwear (e.g. running shoes and hiking shoes) or bare feet, and is expected to be applicable to the evaluation of ankle joint force in development of clinical rehabilitation apparatus, lower limb protection appliances, and footwear. © 2018, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.

Keyword :

Action analysis Ankle joints Equilibrium equation Force difference Kinetic equations Kinetic modeling Lower limb Plantar pressures

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GB/T 7714 Zhang, Jun , He, Wangxiao , Jin, Liang et al. A Simple Dynamic Model for Assessing the Forces on Ankle Joint under Different Loads and Different Gaits [J]. | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2018 , 52 (5) : 162-168 .
MLA Zhang, Jun et al. "A Simple Dynamic Model for Assessing the Forces on Ankle Joint under Different Loads and Different Gaits" . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 52 . 5 (2018) : 162-168 .
APA Zhang, Jun , He, Wangxiao , Jin, Liang , Wang, Lijuan . A Simple Dynamic Model for Assessing the Forces on Ankle Joint under Different Loads and Different Gaits . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2018 , 52 (5) , 162-168 .
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Research of nano silver alloy pasteto solar cell EI CPCI-SSH CPCI-S Scopus
会议论文 | 2017 , 52 | International Conference on Energy Engineering and Environmental Protection (EEEP)
WoS CC Cited Count: 1
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From theory and experiment, the method toimprove the performance of silver paste was explored. Through the analysis about the SEM images to the electrode contact section of the crystal silicon solar cell, the different contact modes and resistance calculation methods of the metal paste and silicon were verified. Through the resistance calculation, consideringthe different oxide and silver silicon contact alloy characteristics, two kinds of additive compositions were found that which may have good performance in alloy paste of the solar cell.

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GB/T 7714 Du, Yizhou , Peng, Xiaoxai , Wang, He . Research of nano silver alloy pasteto solar cell [C] . 2017 .
MLA Du, Yizhou et al. "Research of nano silver alloy pasteto solar cell" . (2017) .
APA Du, Yizhou , Peng, Xiaoxai , Wang, He . Research of nano silver alloy pasteto solar cell . (2017) .
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Simulations of guiding of low-energy ions through a single nanocapillary in insulating materials EI SCIE Scopus CSCD
期刊论文 | 2017 , 26 (10) | CHINESE PHYSICS B | IF: 1.321
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Simulations of guiding of low-energy ions through a single nanocapillary in insulating polymers are reported. The nanocapillary has a diameter of 100 nm and a length of 10 mu m. Different from previous work, in our simulations a hyperbolic function is used to describe the decay of the charges deposited on the capillary surface. The present simulations reproduce the self-organized charge-up process occurring in the capillary. It is shown that lower-energy ions undergo more oscillations to get guiding equilibrium than those of higher-energy ions, resulting in a longer charging time, which is in good agreement with previous experimental results. Moreover, the experimentally observed mass independence of ion guiding is proved in our simulations. In particular, it is found that the maximum of the repulsive field within the capillary is independent of the ion energy as well as the tilt angle. To counterbalance the increasing of the transversal energy caused by increasing the tilt angle or incident energy, the effective length of the repulsive field is expanded in a self-organizing manner.

Keyword :

nanocapillary capillary guiding ion transmission

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GB/T 7714 Liu, Shi-Dong , Zhao, Yong-Tao , Wang, Yu-Yu . Simulations of guiding of low-energy ions through a single nanocapillary in insulating materials [J]. | CHINESE PHYSICS B , 2017 , 26 (10) .
MLA Liu, Shi-Dong et al. "Simulations of guiding of low-energy ions through a single nanocapillary in insulating materials" . | CHINESE PHYSICS B 26 . 10 (2017) .
APA Liu, Shi-Dong , Zhao, Yong-Tao , Wang, Yu-Yu . Simulations of guiding of low-energy ions through a single nanocapillary in insulating materials . | CHINESE PHYSICS B , 2017 , 26 (10) .
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Magnetization at the interface of Cr2O3 and paramagnets with large stoner susceptibility EI SCIE Scopus
期刊论文 | 2017 , 29 (10) | JOURNAL OF PHYSICS-CONDENSED MATTER | IF: 2.617
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From the Cr 2p(3/2) x-ray magnetic circular dichroism signal, there is clear evidence of interface polarization with overlayers of both Pd and Pt on chromia (Cr2O3). The residual boundary polarization of chomia is stronger for a Pt overlayer than in the case of a Pd overlayer. The reduction of chromia boundary magnetization with a paramagnetic metal overlayer, compared to the free surface, is interpreted as a response to the induced spin polarization in Pt and Pd. Magnetization induced in a Pt overlayer, via proximity to the chromia boundary magnetization, is evident in the polar magneto-optical Kerr measurements. These results are essential to explainations why Pt and Pd are excellent spacer layers for voltage controlled exchange bias, in the [Pd/Co](n)/Pd/Cr2O3 and [Pt/Co](n)/Pt/Cr2O3 perpendicular magneto-electric exchange bias systems. The findings pave the way to realize ultra-fast reversal of induced magnetization in a free moment paramagnetic layer, with possible application in voltage-controlled magnetic random access memory.

Keyword :

chromia XMCD-PEEM induced polarization interface polarization

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GB/T 7714 Cao, Shi , Street, M. , Wang, Junlei et al. Magnetization at the interface of Cr2O3 and paramagnets with large stoner susceptibility [J]. | JOURNAL OF PHYSICS-CONDENSED MATTER , 2017 , 29 (10) .
MLA Cao, Shi et al. "Magnetization at the interface of Cr2O3 and paramagnets with large stoner susceptibility" . | JOURNAL OF PHYSICS-CONDENSED MATTER 29 . 10 (2017) .
APA Cao, Shi , Street, M. , Wang, Junlei , Wang, Jian , Zhang, Xiaozhe , Binek, Ch et al. Magnetization at the interface of Cr2O3 and paramagnets with large stoner susceptibility . | JOURNAL OF PHYSICS-CONDENSED MATTER , 2017 , 29 (10) .
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Effects of biaxial strain on the improper multiferroicity in h-LuFeO3 films studied using the restrained thermal expansion method SCIE Scopus
期刊论文 | 2017 , 95 (9) | PHYSICAL REVIEW B | IF: 3.813
WoS CC Cited Count: 2
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Elastic strain is potentially an important approach in tuning the properties of the improperly multiferroic hexagonal ferrites, the details of which, however, have been elusive due to experimental difficulties. Employing the method of restrained thermal expansion, we have studied the effect of isothermal biaxial strain in the basal plane of h-LuFeO3 (001) films. The results indicate that a compressive biaxial strain significantly enhances the K-3 structural distortion (the order parameter of the improper ferroelectricity), and the effect is larger at higher temperatures. The compressive biaxial strain and the enhanced K-3 structural distortion together cause an increase in the electric polarization and a reduction in the canting of the weak ferromagnetic moments in h-LuFeO3, according to our first principles calculations. These findings are important for understanding the strain effect as well as the coupling between the lattice and the improper multiferroicity in h-LuFe3. The experimental elucidation of the strain effect in h-LuFeO3 films also suggests that the restrained thermal expansion can be a viable method to unravel the strain effect in many other thin film materials.

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GB/T 7714 Sinha, Kishan , Zhang, Yubo , Jiang, Xuanyuan et al. Effects of biaxial strain on the improper multiferroicity in h-LuFeO3 films studied using the restrained thermal expansion method [J]. | PHYSICAL REVIEW B , 2017 , 95 (9) .
MLA Sinha, Kishan et al. "Effects of biaxial strain on the improper multiferroicity in h-LuFeO3 films studied using the restrained thermal expansion method" . | PHYSICAL REVIEW B 95 . 9 (2017) .
APA Sinha, Kishan , Zhang, Yubo , Jiang, Xuanyuan , Wang, Hongwei , Wang, Xiao , Zhang, Xiaozhe et al. Effects of biaxial strain on the improper multiferroicity in h-LuFeO3 films studied using the restrained thermal expansion method . | PHYSICAL REVIEW B , 2017 , 95 (9) .
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How Correlated is the FeSe/SrTiO3 System? EI SCIE PubMed Scopus
期刊论文 | 2017 , 119 (6) | PHYSICAL REVIEW LETTERS | IF: 8.839
WoS CC Cited Count: 9
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Recent observation of similar to 10 times higher critical temperature in a FeSe monolayer compared with its bulk phase has drawn a great deal of attention because the electronic structure in the monolayer phase appears to be different than bulk FeSe. Using a combination of density functional theory and dynamical mean field theory, we find electronic correlations have important effects on the predicted atomic-scale geometry and the electronic structure of the monolayer FeSe on SrTiO3. The electronic correlations are dominantly controlled by the Se-Fe-Se angle either in the bulk phase or the monolayer phase. But the angle sensitivity increases and the orbital differentiation decreases in the monolayer phase compared to the bulk phase. The correlations are more dependent on Hund's J than Hubbard U. The observed orbital selective incoherence to coherence crossover with temperature confirms the Hund's metallic nature of the monolayer FeSe. We also find electron doping by oxygen vacancies in SrTiO3 increases the correlation strength, especially in the d(xy) orbital by reducing the Se-Fe-Se angle.

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GB/T 7714 Mandal, Subhasish , Zhang, Peng , Ismail-Beigi, Sohrab et al. How Correlated is the FeSe/SrTiO3 System? [J]. | PHYSICAL REVIEW LETTERS , 2017 , 119 (6) .
MLA Mandal, Subhasish et al. "How Correlated is the FeSe/SrTiO3 System?" . | PHYSICAL REVIEW LETTERS 119 . 6 (2017) .
APA Mandal, Subhasish , Zhang, Peng , Ismail-Beigi, Sohrab , Haule, K. . How Correlated is the FeSe/SrTiO3 System? . | PHYSICAL REVIEW LETTERS , 2017 , 119 (6) .
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The Frustration-induced Ferroelectricity of a Manganite Tricolor Superlattice with Artificially Broken Symmetry SCIE PubMed Scopus
期刊论文 | 2017 , 7 | SCIENTIFIC REPORTS | IF: 4.122
WoS CC Cited Count: 3
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In this paper, [(La0.9Sr0.1MnO3)(n)/(Pa0.9Ca0.1MnO3)(n)/(La0.9Sb0.1MnO3)(n)](m) superlattices films have been deposited on (001) Nb: SrTiO3 substrates by a laser molecular-beam epitaxy technology. Expected ferroelectricity arise at well-defined tricolor superlattice at low temperature, composed of transition metal manganite, which is absent in the single-phase compounds. Furthermore, the ferroelectric properties of the superlattices are enhanced by increasing the periodicity m, which may be attributed to the accumulation of the polarization induced by the frustration. As for the magnetic hysteresis loop characteristics of the multilayer structures, the saturation magnetization and magnetic coercivity of films present definitely a strong periodic dependence. It also indicates that the frustration may exist in the tricolor superlattice. Our results further verify the previous theoretical research of generating multiferroics experimentally paving a way for designing or developing the novel magnetoelectric devices based on manganite ferromagnets.

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GB/T 7714 Pei, Huanyu , Guo, Shujin , Ren, Lixia et al. The Frustration-induced Ferroelectricity of a Manganite Tricolor Superlattice with Artificially Broken Symmetry [J]. | SCIENTIFIC REPORTS , 2017 , 7 .
MLA Pei, Huanyu et al. "The Frustration-induced Ferroelectricity of a Manganite Tricolor Superlattice with Artificially Broken Symmetry" . | SCIENTIFIC REPORTS 7 (2017) .
APA Pei, Huanyu , Guo, Shujin , Ren, Lixia , Chen, Changle , Luo, Bingcheng , Dong, Xianglei et al. The Frustration-induced Ferroelectricity of a Manganite Tricolor Superlattice with Artificially Broken Symmetry . | SCIENTIFIC REPORTS , 2017 , 7 .
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