The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Alexander Kozhanov - One of the best experts on this subject based on the ideXlab platform.
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Spin wave Scattering and interference in ferromagnetic cross
Journal of Applied Physics, 2015Co-Authors: Kasuni Nanayakkara, Ajey P. Jacob, Alexander KozhanovAbstract:Magnetostatic spin wave Scattering and interference across a CoTaZr ferromagnetic spin wave waveguide cross junction were investigated experimentally and by micromagnetic simulations. It is observed that the phase of the scattered waves is dependent on the wavelength, geometry of the junction, and Scattering Direction. It is found that destructive and constructive interference of the spin waves generates switching characteristics modulated by the input phase of the spin waves. Micromagnetic simulations are used to analyze experimental data and simulate the spin wave Scattering and interference.
Jin Au Kong - One of the best experts on this subject based on the ideXlab platform.
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rainbow and blueshift effect of a dispersive spherical invisibility cloak impinged on by a nonmonochromatic plane wave
Physical Review Letters, 2008Co-Authors: Baile Zhang, Hongsheng Chen, Jin Au KongAbstract:We demonstrate some interesting phenomena associated with a nonmonochromatic plane wave passing through a spherical invisibility cloak whose radial permittivity and permeability are of Drude and Lorentz types. We observe that the frequency center of a quasimonochromatic incident wave will suffer a blueshift in the forward Scattering Direction. Different frequency components have different depths of penetration, causing a rainbowlike effect within the cloak. The concept of group velocity at the inner boundary of the cloak needs to be revisited. Extremely low Scattering can still be achieved within a narrow band.
Xueming Yang - One of the best experts on this subject based on the ideXlab platform.
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reactivity oscillation in the heavy light heavy cl ch4 reaction
Proceedings of the National Academy of Sciences of the United States of America, 2020Co-Authors: Zhen Chen, Dongxu Dai, Xueming Yang, Ting Xie, Xingan Wang, Jun Chen, Rongjun Chen, Shu LiuAbstract:It has long been predicted that oscillatory behavior exists in reactivity as a function of collision energy for heavy–light–heavy (HLH) chemical reactions in which a light atom is transferred between two heavy atoms or groups of atoms, but direct observation of such a behavior in bimolecular reactions remains a challenge. Here we report a joint theoretical and crossed-molecular-beam study on the Cl + CH4 → HCl + CH3 reaction. A distinctive peak at a collision energy of 0.15 eV for the CH3(v = 0) product was experimentally detected in the backward Scattering Direction. Detailed quantum-dynamics calculations on a highly accurate potential energy surface revealed that this feature originates from the reactivity oscillation in this HLH polyatomic reaction. We anticipate that such reactivity oscillations exist in many HLH reactions involving polyatomic reagents.
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Interference of quantized transition-state pathways in the H + D2 -> D + HD chemical reaction.
Science (New York N.Y.), 2003Co-Authors: Dongxu Dai, Chia C. Wang, Steven A. Harich, Xiuyan Wang, Xueming Yang, Sheng Der Chao, Rex T. SkodjeAbstract:The collision-energy dependence of the state-resolved differential cross section at a specific backward-Scattering angle for the reaction H + D2 --> D + HD is measured with the D-atom Rydberg "tagging" time-of-flight technique. The reaction was modeled theoretically with converged quantum Scattering calculations that provided physical interpretation of the observations. Oscillations in the differential cross sections in the backward-Scattering Direction are clearly observed and are attributed to the transition-state structures that originate from the interferences of different quantized transition-state pathways.
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Effect of a single quantum rotational excitation on state-to-state dynamics of the O(1D)+H2-->OH+H reaction.
Physical review letters, 2002Co-Authors: Xianghong Liu, Chia C. Wang, Steve A. Harich, Xueming YangAbstract:Crossed molecular beams Scattering experiments on the O( 1 D)+H 2 reaction have been carried out in order to study the effect of the reagent (H 2 ) rotational excitation on the detailed dynamics of this benchmark insertion reation. Experimental results indicate that a single quantum rotational excitation of H 2 has a significant impact on the product state distributions at the forward and backward Scattering Directions, while very little effect has been found in the sideway Scattering Direction. No clear patterns of this effect are found in the OH-product state distributions, indicating that the single quantum excitation on the dynamics is rather complicated.
Kasuni Nanayakkara - One of the best experts on this subject based on the ideXlab platform.
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Spin wave Scattering and interference in ferromagnetic cross
Journal of Applied Physics, 2015Co-Authors: Kasuni Nanayakkara, Ajey P. Jacob, Alexander KozhanovAbstract:Magnetostatic spin wave Scattering and interference across a CoTaZr ferromagnetic spin wave waveguide cross junction were investigated experimentally and by micromagnetic simulations. It is observed that the phase of the scattered waves is dependent on the wavelength, geometry of the junction, and Scattering Direction. It is found that destructive and constructive interference of the spin waves generates switching characteristics modulated by the input phase of the spin waves. Micromagnetic simulations are used to analyze experimental data and simulate the spin wave Scattering and interference.
Ajey P. Jacob - One of the best experts on this subject based on the ideXlab platform.
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Spin wave Scattering and interference in ferromagnetic cross
Journal of Applied Physics, 2015Co-Authors: Kasuni Nanayakkara, Ajey P. Jacob, Alexander KozhanovAbstract:Magnetostatic spin wave Scattering and interference across a CoTaZr ferromagnetic spin wave waveguide cross junction were investigated experimentally and by micromagnetic simulations. It is observed that the phase of the scattered waves is dependent on the wavelength, geometry of the junction, and Scattering Direction. It is found that destructive and constructive interference of the spin waves generates switching characteristics modulated by the input phase of the spin waves. Micromagnetic simulations are used to analyze experimental data and simulate the spin wave Scattering and interference.
