First-principle study for influence of an external electric field on the electronic structure and optical properties of TiO2

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 98908-98915 ◽  
Author(s):  
Cuihua Zhao ◽  
Dewei Huang ◽  
Jianhua Chen ◽  
Yuqiong Li ◽  
Zheng Du
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Electric Field ◽  
External Electric Field ◽  
Electric Fields ◽  
First Principle ◽  
First Principle Calculations ◽  
External Electric Fields

The influence of external electric fields on the electronic structure and optical properties of TiO2 was studied using first-principle calculations.

scholarly journals Molecular Dynamics Simulations of Liquid-Liquid Interfaces in an Electric Field: the Water-1,2-Dichloroethane Interface

2020 ◽  
Author(s):  
Paolo Raiteri ◽  
Peter Kraus ◽  
Julian Gale
Keyword(s):  
Molecular Dynamics ◽  
Electric Field ◽  
Molecular Dynamics Simulations ◽  
External Electric Field ◽  
Electric Fields ◽  
Liquid Interfaces ◽  
Ewald Summation ◽  
External Electric Fields ◽  
Simulation Cell ◽  
Dynamics Simulations

Molecular dynamics simulations of the liquid-liquid interface between water and 1,2-Dichloroethane in the presence of weak external electric fields.<div>The effect of the use of 3D periodic Ewald summation and the effect of the simulation setup are discussed.</div><div>A new simple geometric method for designing the simulation cell is proposed. This method was thoroughly tested shown that it mitigates any artefacts to the use of 3D Ewald summation with external electric field.</div>

Electronic structure and optical properties of Fe-doped SnS2 from first-principle calculations

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3480-3486 ◽  
Author(s):  
Lili Sun ◽  
Wei Zhou ◽  
Yanyu Liu ◽  
Dandan Yu ◽  
Yinghua Liang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Infrared Region ◽  
First Principle ◽  
Fe Doping ◽  
Visible Absorption ◽  
First Principle Calculations

The Fe doping can increase the visible absorption of SnS2 and extend the absorption into the infrared region.

scholarly journals External-Electric-Field-Enhanced Uniformity and Deposition Rate of a TiO2 Film Prepared by the Sparking Process

2018 ◽  
Vol 63 (6) ◽  
pp. 531 ◽  
Author(s):  
W. Thongpan ◽  
T. Kumpika ◽  
E. Kantarak ◽  
A. Panthawan ◽  
P. Pooseekheaw ◽  
...  
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Electric Fields ◽  
Deposition Rate ◽  
Tio2 Films ◽  
Dc Voltage ◽  
External Electric Fields ◽  
Deposited Film ◽  
Field Area ◽  
Scanning Electron

We have used an external electric field to increase both the uniformity and deposition rate of TiO2 films. The experiment is carried out by sparking-off titanium wires with a high dc voltage of 1 kV (field Eint = 10 kV/cm) and a limited current of 3 mA. The external electric fields (Eext) of 3, 6, and 9 kV/cm were applied to the sparking system for 1–5 hours. The as-deposited film morphology was characterized by scanning electron microscopy. The results clearly show that the films are only deposited on the external electric field area. Furthermore, the deposition rate of the films increased from 40.7% to 77.8% in the presence of the external electric field of 9 kV/cm. The effects of an external electric field on both the deposition rate and uniformity of films are investigated and described.

scholarly journals Molecular Dynamics Simulations of Liquid-Liquid Interfaces in an Electric Field: the Water-1,2-Dichloroethane Interface

2020 ◽  
Author(s):  
Paolo Raiteri ◽  
Peter Kraus ◽  
Julian Gale
Keyword(s):  
Molecular Dynamics ◽  
Electric Field ◽  
Molecular Dynamics Simulations ◽  
External Electric Field ◽  
Electric Fields ◽  
Liquid Interfaces ◽  
Ewald Summation ◽  
External Electric Fields ◽  
Simulation Cell ◽  
Dynamics Simulations

Molecular dynamics simulations of the liquid-liquid interface between water and 1,2-Dichloroethane in the presence of weak external electric fields.<div>The effect of the use of 3D periodic Ewald summation and the effect of the simulation setup are discussed.</div><div>A new simple geometric method for designing the simulation cell is proposed. This method was thoroughly tested shown that it mitigates any artefacts to the use of 3D Ewald summation with external electric field.</div>

scholarly journals The optical tweezer of skyrmions

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Xi-Guang Wang ◽  
Levan Chotorlishvili ◽  
Vitalii K. Dugaev ◽  
Arthur Ernst ◽  
Igor V. Maznichenko ◽  
...  
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Electric Fields ◽  
Essential Role ◽  
Optical Tweezer ◽  
Magnetic Texture ◽  
Dm Interaction ◽  
Micromagnetic Simulations ◽  
Magnetic Structures ◽  
External Electric Fields

Abstract In a spin-driven multiferroic system, the magnetoelectric coupling has the form of effective dynamical Dzyaloshinskii–Moriya (DM) interaction. Experimentally, it is confirmed, for instance, for Cu2OSeO3, that the DM interaction has an essential role in the formation of skyrmions, which are topologically protected magnetic structures. Those skyrmions are very robust and can be manipulated through an electric field. The external electric field couples to the spin-driven ferroelectric polarization and the skyrmionic magnetic texture emerged due to the DM interaction. In this work, we demonstrate the effect of optical tweezing. For a particular configuration of the external electric fields it is possible to trap or release the skyrmions in a highly controlled manner. The functionality of the proposed tweezer is visualized by micromagnetic simulations and model analysis.

Intersubband Transitions in Asymmetric Quantum Wells with External Electric Field

2014 ◽  
Vol 525 ◽  
pp. 170-176
Author(s):  
Zhao Xu Liu ◽  
Jun Zhu ◽  
Si Hua Ha
Keyword(s):  
Electric Field ◽  
Quantum Wells ◽  
External Electric Field ◽  
Electric Fields ◽  
Stark Effect ◽  
Energy Levels ◽  
Intersubband Transitions ◽  
External Electric Fields ◽  
Asymmetric Quantum ◽  
Negative Field

The quantum-confined Stark effect on the optical absorption of intersubband transitions in an asymmetric AlxGa1-xN/In0.3Ga0.7N/GaN quantum wells is investigated by means of the density matrix formulism. The built-in electric field generated by the piezoelectric and spontaneous polarizations competing against to the external electric fields is considered. As the result, the influences of the built-in and external electric fields on the energy potentials and the eigen stares are discussed in detail. When the positive external electric field is applied, the peak values of the absorption coefficients from 3-2, 2-1 and 3-1 transitions are reduced and moved to the lower photon energy levels. With the negative field, the exactly opposite results can be obtained. Moreover, it is indicated that the results of the wavelengths from the 3-2, 2-1 and 3-1 transitions are reduced by the positive external electric field and increased by the negative field.

scholarly journals Theoretical and experimental study on the electronic and optical properties of K0.5Rb0.5Pb2Br5: a promising laser host material

RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11156-11164 ◽  
Author(s):  
Tuan V. Vu ◽  
A. A. Lavrentyev ◽  
B. V. Gabrelian ◽  
Dat D. Vo ◽  
Hien D. Tong ◽  
...  
Keyword(s):  
Experimental Study ◽  
Optical Properties ◽  
Electronic Structure ◽  
Host Material ◽  
First Principle ◽  
X Ray ◽  
Electronic And Optical Properties ◽  
First Principle Calculations

The data on the electronic structure and optical properties of bromide K0.5Rb0.5Pb2Br5 achieved by first-principle calculations and verified by X-ray spectroscopy measurements are reported.

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