scholarly journals Observation of inter-layer charge transmission resonance at optically excited graphene–TMDC interfaces

APL Materials ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 091114
Author(s):  
Ranjit Kashid ◽  
Jayanta Kumar Mishra ◽  
Avradip Pradhan ◽  
Tanweer Ahmed ◽  
Saloni Kakkar ◽  
...  
Keyword(s):  
Layer Charge ◽  
Transmission Resonance

Crystallochemical classifications of phyllosilicates based on the unified system of projection of chemical composition: I. The mica group

Clay Minerals ◽  
1990 ◽  
Vol 25 (1) ◽  
pp. 73-81 ◽  
Author(s):  
A. Wiewióra
Keyword(s):  
Chemical Composition ◽  
Divalent Cations ◽  
Layer Charge ◽  
Vector Representation ◽  
Similar Formula ◽  
Crystallochemical Formula ◽  
Trivalent Cations ◽  
Image Position ◽  
Composition I ◽  
Unit Vectors

AbstractA unified system of vector representation of chemical composition is proposed for the phyllosilicates based on projection of the composition, as given by crystallochemical formula, onto a field with orthogonal axes chosen for octahedral divalent cations, R2+, and Si (X, Y, respectively), and oblique axes for octahedral trivalent cations, R3+, and vacancies, □, (V, Z, respectively). Point coordinates for each set of axes were used to define the direction and length of the unit vectors for phyllosilicates belonging to different groups. Parallel to these fundamental directions the composition isolines were drawn in the projection fields. Applied to micas, this system enables control of the chemical composition by the general crystallochemical formula covering all varieties of Li-free dioctahedral and trioctahedral micas:where z (number of vacancies) = (y-x+ m)/2; m (layer charge) =1; u+y+z = 3. There is a similar formula for vacancy-free lithian micas:where w = m — x+y;m=1; u+y+w = 3, and for Li-free brittle micas:where z = (y — x+m)/2; m = 2; u+y+z = 3. Projection fields were used to classify micas.

scholarly journals Lightning in the Anvils of Supercell Thunderstorms

2012 ◽  
Vol 140 (7) ◽  
pp. 2064-2079 ◽  
Author(s):  
Stephanie A. Weiss ◽  
Donald R. MacGorman ◽  
Kristin M. Calhoun
Keyword(s):  
Warm Season ◽  
Opposite Polarity ◽  
Layer Charge ◽  
Supercell Storm ◽  
Lightning Detection ◽  
Supercell Storms ◽  
Mapping Array ◽  
Storm Dynamics ◽  
Supercell Thunderstorms

Abstract This study uses data from the Oklahoma Lightning Mapping Array (OK-LMA), the National Lightning Detection Network, and the Norman, Oklahoma (KOUN), prototype Weather Surveillance Radar-1988 Doppler (WSR-88D) radar to examine the evolution and structure of lightning in the anvils of supercell storms as they relate to storm dynamics and microphysics. Several supercell storms within the domain of the OK-LMA were examined to determine whether they had lightning in the anvil region, and if so, the time and location of the initiation of the anvil flashes were determined. Every warm-season supercell storm had some flashes that were initiated in or near the stronger reflectivities of the parent storm and propagated 40–70 km downstream to penetrate well into the anvil. Some supercell storms also had flashes that were initiated within the anvil itself, 40–100 km beyond the closest 30-dBZ contour of the storm. These flashes were typically initiated in one of three locations: 1) coincident with a local reflectivity maximum, 2) between the uppermost storm charge and a screening-layer charge of opposite polarity near the cloud boundary, or 3) in a region in which the anvils from two adjoining storms intersected. In some storms, anvil flashes struck ground beneath a reflectivity maximum in which reflectivity ≥20 dBZ had extended below the 0°C isotherm, possibly leading to the formation of embedded convection. This relationship may be useful for identifying regions in which there is a heightened risk for cloud-to-ground strikes beneath anvil clouds. In one storm, however, anvil lightning struck ground even though this reflectivity signature was absent.

Influence of Layer Charge and Modifier on Wettability of Organo-Montmorillonite

2014 ◽  
Vol 1030-1032 ◽  
pp. 90-94
Author(s):  
Zhong Xin Luo ◽  
Mang Lai Gao ◽  
Ya Ge Ye
Keyword(s):  
Synergistic Effect ◽  
Chain Length ◽  
Quaternary Ammonium ◽  
Capillary Rise ◽  
Quaternary Ammonium Salts ◽  
Deionized Water ◽  
Ammonium Salts ◽  
Layer Charge ◽  
Oil Reservoir ◽  
Capillary Rise Method

To study the influence of layer charge and modifier on wettability plays an important role on the diagnosis of oil reservoir. In this paper, two quaternary ammonium salts (QASs) with different chain-length were used singularly or in compound form to modify the reduced-charge montmorillonites (RCMs). The wettability alterations of the organo-RCMs for deionized water and cyclohexane were studied based on capillary rise method. The results showed that RCMs singularly modified by QASs show different wettability characteristics. Moreover, there is a synergistic effect on the wettability when the RCMs are compound modified by two QASs and the organo-RCMs turn to more hydrophilic. The results of this work also indicated that it is possible to regulate the wettability of the RCMs by choosing different recipe of QASs, which is helpful to provide theoretical guidance for the oil production.

Interfacial Engineering of Mo/Hf0.3Zr0.7O2/Si Capacitor Using Direct Scavenging Effect of Thin Ti layer

2021 ◽  
Author(s):  
Se Hyun Kim ◽  
Geun Taek Yu ◽  
Geun Hyeong Park ◽  
Dong Hyun Lee ◽  
Ju-Yong Park ◽  
...  
Keyword(s):  
Sacrificial Layer ◽  
Charge Trapping ◽  
Layer Charge ◽  
Tio2 Layer ◽  
Interfacial Engineering ◽  
Scavenging Effect

An antiferroelectric Mo/Hf0.3Zr0.7O2/SIOx/Si capacitor was engineered using the direct scavenging effect of a sputtered Ti sacrificial layer. Charge trapping could be mitigated with the oxidized TiO2 layer, and the endurance...

scholarly journals The effect of dissipation on quantum transmission resonance

2007 ◽  
Vol 368 (6) ◽  
pp. 442-449 ◽  
Author(s):  
Kohkichi Konno ◽  
Munehiro Nishida ◽  
Satoshi Tanda ◽  
Noriyuki Hatakenaka
Keyword(s):  
Transmission Resonance ◽  
Quantum Transmission

scholarly journals Effects of Reaction Temperature and Layer Charge on Formation of Chromia Pillared Fluorine Micas.

1997 ◽  
pp. 862-868
Author(s):  
Tomohiro YAMAGUCHI ◽  
Seiji MATSUKURA ◽  
Takayuki FUJITA ◽  
Nobuo TAKUSAGAWA ◽  
Kunio KITAJIMA
Keyword(s):  
Reaction Temperature ◽  
Layer Charge

Influence of pH, layer charge location and crystal thickness distribution on U(VI) sorption onto heterogeneous dioctahedral smectite

2016 ◽  
Vol 317 ◽  
pp. 246-258 ◽  
Author(s):  
Vanessa Guimarães ◽  
Enrique Rodríguez-Castellón ◽  
Manuel Algarra ◽  
Fernando Rocha ◽  
Iuliu Bobos
Keyword(s):  
Thickness Distribution ◽  
Layer Charge ◽  
Crystal Thickness ◽  
Dioctahedral Smectite ◽  
Influence Of Ph
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