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Chinese Physics B 2020年第6期29卷 532-537页

作者： f sobhani H Heidarzadeh H Bahador Department of Electrical and Computer Engineering University of Mohaghegh ArdabiliArdabilIran

The cluster-shaped plasmonic nanostructures are used to manage the incident light inside an ultra-thin silicon solar *** we simulate spherical,conical,pyramidal,and cylindrical nanoparticles in a form of a cluster at the rear side of a thin silicon cell,using the finite difference time domain(fDTD)*** calculating the optical absorption and hence the photocurrent,it is shown that the clustering of nanoparticles significantly improves *** photocurrent enhancement is the result of the plasmonic effects of clustering the *** comparison,first a cell with a single nanoparticle at the rear side is *** four smaller nanoparticles are put around it to make a *** photocurrents of 20.478 mA/cm2,23.186 mA/cm2,21.427 mA/cm2,and 21.243 mA/cm2 are obtained for the cells using clustering conical,spherical,pyramidal,cylindrical NPs at the backside,*** values are 13.987 mA/cm2,16.901 mA/cm2,16.507 mA/cm2,17.926 mA/cm2 for the cell with one conical,spherical,pyramidal,cylindrical NPs at the backside,***,clustering can significantly improve the ***,the distribution of the electric field and the generation rate for the proposed structures are calculated.

关键词： clustering nanoparticles plasmonic solar cell localized surface plasmon resonance photocurrent finite difference time domain(fDTD)method light management

Davidson base as an appropriate base for the shell model in the case of 1p- and 1h- nuclei

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Communications in Theoretical Physics 2024年第10期76卷 94-100页

作者： Hadi sobhani Yan-An Luo Amir Jalili Hassan Hassanabadi School of Physics Nankai University Department of Physics Zhejiang Sci-Tech University Institute of Theoretical Physics Faculty of Physics University of Warsaw Institute of Actuarial Science and Data Analytics UCSI University

This study endeavors to develop an improved set of basis functions for nuclear shell-model calculations. The shell model, a well-established approach to understanding nuclear structure,typically employs the harmonic oscillator potential within the mean-field approximation. Given the extensive validation and consistency of harmonic oscillator results with experimental data,we propose a modification by incorporating a centrifugal term that converges toward the Davidson potential. This potential has been extensively studied, and we aim to extract relevant experimental data for the simplest cases in the shell model, namely one-particle and one-hole nuclei. A comprehensive comparison between the Davidson-based results and the harmonic oscillator calculations is presented to demonstrate the effectiveness of the new basis functions.

关键词： beta decay gamma transition nuclear structure shell-model calculations

Rashba Effect in Presence of Time-Dependent Interaction

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Communications in Theoretical Physics 2016年第5期65卷 543-545页

作者： Hadi sobhani Hassan Hassanabadi Physics Department Shahrood University of TechnologyShahroodIran

Rashba effect in presence of a time-dependent interaction has been *** time-evolution of such a system has been studied by using Lewis–Riesenfeld dynamical invariant and unitary transformation *** appropriate dynamical invariant and unitary transformation according the considered system have been constructed as well as some special cases have come into this article which are common in physics.

关键词： Rashba effect time-dependent interaction Lewis–Riesenfeld dynamical invariant unitary transformation method

Two-Dimensional Linear Dependencies on the Coordinate Time-Dependent Interaction in Relativistic Non-Commutative Phase Space

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Communications in Theoretical Physics 2015年第9期64卷 263-268页

作者： H.sobhani H.Hassanabadi Physics Department University of Shahrood

In this paper, the Non-Commutative phase space and Dirac equation, time-dependent Dirac oscillator are introduced. After presenting the desire general form of a two-dimensional linear dependency on the coordinate timedependent potential, the Dirac equation is written in terms of Non-Commutative phase space parameters and solved in a general form by using Lewis–Riesenfield invariant method and the time-dependent invariant of Dirac equation with two-dimensional linear dependency on the coordinate time-dependent potential in Non-Commutative phase space has been constructed, then such latter operations are done for time-dependent Dirac oscillator. In order to solve the differential equation of wave function time evolution for Dirac equation and time-dependent Dirac oscillator which are partial differential equation some appropriate ordinary physical problems have been studied and at the end the interesting result has been achieved.

关键词： Non-Commutative phase space Dirac equation time-de

Plasmon hybridization for real metals

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Chinese Science Bulletin 2010年第24期55卷 2629-2634页

作者： BAO Kui sobhani Heidar NORDLANDER Peter Department of Physics Laboratory for Nanophotonics Rice University Houston TX 77005 USA Department of Electrical and Computer Engineering Laboratory for Nanophotonics Rice University Houston TX 77005 USA

We present three important extensions of the plasmon hybridization(PH)method:a generalization of the method to include realistic non-Drude dielectric permittivities for metals,the development of an algorithm for the calculation of plasmon-induced electric field enhancements,and the extension of the PH method to the modeling of plasmonic fano *** illustrate these developments with an application to a silver nanosphere dimer and a symmetric silver nanosphere heptamer.

关键词：金属杂交电浆等离子体 PH值法介电常数计算算法电场增强

Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide

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Plasma Science and Technology 2017年第10期19卷 70-74页

作者： H sobhani H R SABOUHI S fEILI E DADAR Young Researchers and Elite Club Qom Branch Islamic Azad University Department of Electrical Engineering Hormoz Branch Islamic Azad University Department of Physics Shahid Bahonar University faculty of Economic Mofid University

Here a new scheme for mode filtering is proposed. Based on the ponderomotive force effect,propagation of the microwave dual-mode through a plasma-filled metallic rectangular waveguide is investigated. To excite the TE_（20） mode in a rectangular waveguide, the existence of fundamental modes is unavoidable. To filter the destructive mode（TE_（10））, the waveguide is filled with a collisional plasma. Based on the coupling effect, the energy of this destructive TE_（10） mode is transferred to the TE_（20） mode. The proposed structure acts like a mode convertor. The TE_（10） mode become more attenuated and instead the TE_（20） mode is amplified. The plasma filled rectangular waveguide acts as a mode filtering tool.

关键词： mode filtering mode convertor collisional plasma ponderomotive force

γ-fe_2O_3固载Pd-靛红席夫碱配合物作为磁性可回收催化剂用于Heck和Suzuki交叉偶联反应(英文)

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催化学报 2015年第4期36卷 555-563页

作者： Sara sobhani farzaneh Zarifi Department of Chemistry College of Sciences University of BirjandBirjand Iran

A Pd-isatin Schiff base complex immobilized on γ-fe2O3(Pd-isatin Schiff base-γ-fe2O3) was synthe-sized and characterized by fourier transform infrared, scanning electron microscopy, high resolu-tion transmission electron microscopy, X-ray diffraction, thermogravimetric gravimetric analysis,inductively-coupled plasma, X-ray photoelectron spectroscopy, and elemental analysis. It was used as a magnetically reusable Pd catalyst for the Heck and Suzuki cross-coupling reactions.

关键词：席夫碱络合物交叉偶联反应 Suzuki 钯催化剂氧化铁靛红可回收 X射线光电子能谱法

Quasi-exactly solvable decatic model description of nuclei near the X(5) critical point

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Communications in Theoretical Physics 2022年第1期74卷 46-56页

作者： Hadi sobhani Hassan Hassanabadi Dennis Bonatsos feng Pan Jerry P Draayer Department of Physics Liaoning Normal UniversityDalian 116029China faculty of Physics Shahrood University of TechnologyShahroodIran Institute of Nuclear and Particle Physics National Centre for Scientific Research‘Demokritos’GR-15310 Aghia ParaskeviAttikiGreece Department of Physics and Astronomy Louisiana State UniversityBaton RougeLA 70803-4001United States of America

The Bohr Hamiltonian with axially deformed shape confined in a quasi-exactly solvable decatic β-part potential is *** is shown that the decatic model can well reproduce the X(5)model results as far as the energy ratios in the ground and beta band and related B(E2)values are *** results to the low-lying energy ratios and relevant B(E2)values of even-even X(5)candidates ^(150)Nd,^(156)Dy,^(164)Yb,^(168)Hf,^(174)Yb,^(176,178,180)Os,and ^(188,190)Os show that the decatic model provides the best fitting results for the energy ratios,while the X(5)model is the best at reproducing the B(E2)values of these nuclei,in which the beta-bandhead energy is lower than that of the gamma *** for even-even nuclei,such as ^(154,156,158)Gd,with bandhead energies of the beta and gamma bands more or less equal within the X(5)critical point to the axially deformed region,our numerical analysis indicates that the decatic model is better than the X(5)model in describing both the low-lying level energies and related B(E2)values.

关键词： Bohr Hamiltonian the decatic potential X(5)critical point

Sonication method synergism with rare earth based nanocatalyst:preparation of Nife_(2–x)Eu_xO_4 nanostructures and its catalytic applications for the synthesis of benzimidazoles,benzoxazoles,and benzothiazoles under ultrasonic irradiation

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Journal of Rare Earths 2017年第4期35卷 374-381页

作者： Abolfazl Ziarati Ali sobhani-Nasab Mehdi Rahimi-Nasrabadi Mohammad Reza Ganjali Alireza Badiei School of Chemistry College of Science University of TehranTehran ***lran Young Researchers and Elite Club Arak BranchIslamic Azad UniversityArak ***Iran faculty of Pharmacy Baqiyatallah University of Medical SciencesTehran ***lran Department of Chemistry Imam Hossein UniversityTehran ***lran Center of Excellence in Electrochemistry University of TehranTehran *** lran

A simple and practical ultrasonically synthetic strategy for the preparation of rare-earth based catalyst, nanostructured Nife2-xEuxO4 was developed. The structtre of Nife2-xEuxO4 was characterized by various analyses such as X-ray diffraction （XRD）, scanning electron microscopy （SEM） and fourier transform infrared spectroscopy （fT-IR）. The catalytic performance of Nife2-xEuxO4 was evaluated for the synthesis of benzimidazoles, benzoxazoles and benzothiazoles under ultrasonic irradiation. All reactions were completed in short times and all products were obtained in good to excellent yields in presence of the rare-earth based catalyst. Besides, Nife2-xEuxO4 could be recovered for 6 times without noticeably decreasing the catalytic activity.

关键词： rare earths organic reactions nanocatalyst ultrasonic irradiation

Experimental study of flow field distribution over a generic cranked double delta wing

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Chinese Journal of Aeronautics 2016年第5期29卷 1196-1204页

作者： Mojtaba Dehghan Manshadi Mehdi Eilbeigi Mohammad Kazem sobhani Mehrdad Bazaz Zadeh Mohammad Ali Vaziry Department of Mechanical and Aerospace Engineering Malek Ashtar University of Technology

The flow fields over a generic cranked double delta wing were investigated. Pressure and velocity distributions were obtained using a Pitot tube and a hot wire anemometer. Two different leading edge shapes, namely ＂sharp＂ and ＂round＂, were applied to the wing. The wing had two sweep angles of 55° and 30°. The experiments were conducted in a closed circuit wind tunnel at velocity 20 m/s and angles of attack of 5°- 20° with the step of 5°. The Reynolds number of the model was about 2 - 105 according to the root chord. A dual vortex structure was formed above the wing surface. A pressure drop occurred at the vortex core and the root mean square of the measured velocity increased at the core of the vortices, reflecting the instability of the flow in that region. The magnitude of power spectral density increased strongly in spanwise direction and had the maximum value at the vortex core. By increasing the angle of attack, the pressure drop increased and the vortices became wider; the vortices moved inboard along the wing, and away from the surface; the flow separation was initiated from the outer portion of the wing and developed to its inner part. The vortices of the wing of the sharp leading edge were stronger than those of the round one.

关键词： Cranked double delta wing flow field Hot wire Leading edge shape Vortical flow