scholarly journals Tidal generated electric field in the multi-layer structure and the possibilities of its employment for deriving the elastic properties and permeability of the subsurface formations

2019 ◽  
pp. 168-180
Author(s):  
D. A. Alekseev ◽  
M. B. Gokhberg
Keyword(s):  
Electric Field ◽  
Pore Pressure ◽  
Elastic Properties ◽  
Layer Structure ◽  
Program Code ◽  
Number Of Layers ◽  
Perturbation Source ◽  
Vertical Electric Field ◽  
Tidal Deformations ◽  
Rock Strata

An analytical solution of pore pressure equations with a perturbation source in the form of lunar-solar tidal deformations is generalized to the case of a model with the arbitrary number of layers. The electric field of electrokinetic nature is calculated. The sensitivity of pore pressure and its vertical derivative to the elastic properties and permeability of rock strata is evaluated. The program code for solving the inverse problem capable of recovering the Biot modulus and Biot coefficient as well as permeability coefficient in a horizontally layered model is developed. The possibilities of mapping these parameters are discussed including their study from the borehole measurements of the vertical electric field of electrokinetic origin.

scholarly journals Focused Patterning of Electrospun Nanofibers Using a Dielectric Guide Structure

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1505
Author(s):  
Byeongjun Lee ◽  
Younghyeon Song ◽  
Chan Park ◽  
Jungmin Kim ◽  
Jeongbeom Kang ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Finite Elements ◽  
Electric Field ◽  
Electrospun Nanofibers ◽  
Electrospun Fibers ◽  
Continuous Line ◽  
Key Factors ◽  
Key Technology ◽  
Vertical Electric Field ◽  
Dielectric Guide

The patterning of electrospun fibers is a key technology applicable to various fields. This study reports a novel focused patterning method for electrospun nanofibers that uses a cylindrical dielectric guide. The finite elements method (FEM) was used to analyze the electric field focusing phenomenon and ground its explanation in established theory. The horizontal and vertical electric field strengths in the simulation are shown to be key factors in determining the spatial distribution of nanofibers. The experimental results demonstrate a relationship between the size of the cylindrical dielectric guide and that of the electrospun area accumulated in the collector. By concentrating the electric field, we were able to fabricate a pattern of less than 6 mm. The demonstration of continuous line and square patterning shows that the electrospun area can be well controlled. This novel patterning method can be used in a variety of applications, such as sensors, biomedical devices, batteries, and composites.

Reduced interfacial fluctuation leading enhanced mobility in a monolayer MoS2 DG FET under low vertical electric field

2019 ◽  
Vol 30 (34) ◽  
pp. 345206 ◽  
Author(s):  
Hyunjin Ji ◽  
Hojoon Yi ◽  
Sakong Wonkil ◽  
Hyun Kim ◽  
Seong Chu Lim
Keyword(s):  
Electric Field ◽  
Monolayer Mos2 ◽  
Vertical Electric Field ◽  
Enhanced Mobility

Defining the elastic properties and the tensor of the pore-pressure transfer in rocks using the averaging method

2015 ◽  
Vol 70 (4) ◽  
pp. 354-361 ◽  
Author(s):  
S. V. Sheshenin ◽  
N. B. Artamonova ◽  
Yu. V. Frolova ◽  
V. M. Ladygin
Keyword(s):  
Pore Pressure ◽  
Elastic Properties ◽  
Averaging Method

Electric field-modulated data storage in bilayer InSe

2017 ◽  
Vol 5 (46) ◽  
pp. 12228-12234 ◽  
Author(s):  
Xuhui Yang ◽  
Baisheng Sa ◽  
Hongbing Zhan ◽  
Zhimei Sun
Keyword(s):  
Electric Field ◽  
Data Storage ◽  
Storage Device ◽  
Vertical Electric Field

A vertical electric field-modulated data storage device based on bilayer InSe.

Plasmon modes in N-layer silicene structures

2021 ◽  
Author(s):  
Men Nguyen Van
Keyword(s):  
Electric Field ◽  
Random Phase ◽  
Single Layer ◽  
Plasmon Mode ◽  
Orbit Coupling ◽  
Collective Excitations ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Number Of Layers ◽  
Plasmon Modes

Abstract We investigate the plasmon properties in N-layer silicene systems consisting of N, up to 6, parallel single-layer silicene under the application of an out-of-plane electric field, taking into account the spin-orbit coupling within the random-phase approximation. Numerical calculations demonstrate that N undamped plasmon modes, including one in-phase optical and (N-1) out-of-phase acoustic modes, continue mainly outside the single-particle excitation area of the system. As the number of layers increases, the frequencies of plasmonic collective excitations increase and can become much larger than that in single layer silicene, more significant for high-frequency modes. The optical (acoustic) plasmon mode(s) noticeably (slightly) decreases with the increase in the bandgap and weakly depends on the number of layers. We observe that the phase transition of the system weakly affects the plasmon properties, and as the bandgap caused by the spin-orbit coupling equal that caused by the external electric field, the plasmonic collective excitations and their broadening function in multilayer silicene behave similarly to those in multilayer gapless graphene structures. Our investigations show that plasmon curves in the system move toward that in single layer silicene as the separation increases, and the impacts of this factor can be raised by a large number of layers in the system. Finally, we find that the imbalanced carrier density between silicene layers significantly decreases plasmon frequencies, depending on the number of layers.

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