| viXra.org > Condensed Matter > 2412 |
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| viXra.org > Condensed Matter > 2412 |
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[4] viXra:2412.0170 [pdf] submitted on 2024-12-27 06:48:47
Authors: Vitaly V. Chaban
Comments: 27 Pages. in Russian
The development of new electrolyte solutions with improved characteristics is a key challenge for creating high-performance batteries, fuel cells, supercapacitors, and other electrochemical devices. The study of the potential energy landscape (PEL) plays an important role in this process, providing information about the interactions between solution components at the molecular level. In this work, we review the practice of applying PEL research methods based on classical and quantum-chemical algorithms to analyze the structure, dynamics, and thermodynamic properties of electrolyte solutions. Intermolecular and ion-molecular interactions at the microscopic level, which determine the macroscopic properties of the electrolyte solution, are considered in detail. The importance of identifying stable configurations of ions and their solvates is emphasized. PEL analysis allows for the systematic determination of the most probable structures and complexes formed in solution, which is important for understanding ion transport mechanisms. The study of the PEL allows for the determination of the energy barriers that must be overcome for ion migration, which is related to the conductivity of the electrolyte. The application of PEL research methods in combination with experimental data opens up new possibilities for the rational design of electrolyte solutions with desired physicochemical properties.
Category: Condensed Matter
[3] viXra:2412.0167 [pdf] submitted on 2024-12-26 23:31:43
Authors: Nadezhda Andreeva, Vitaly V. Chaban
Comments: 29 Pages. In Russian
Metal film capacitors are ubiquitous components in modern electronics, playing an important role in energy storage, filtering, and voltage regulation. However, their performance and reliability can be reduced by partial electrical breakdowns caused by defects in the dielectric material. An attempt to partially mitigate this problem is the use of self-healing capacitors. The self-healing phenomenon significantly increases the service life of the device. This review presents a comprehensive analysis of the currently known aspects and mechanisms of self-healing in metal film capacitors. The role of the self-healing phenomenon in increasing the number of operating cycles of a dielectric capacitor is discussed. The molecular processes underlying significantly different self-healing potentials of dielectric polymers are verified. The review is addressed to specialists in electrical engineering.
Category: Condensed Matter
[2] viXra:2412.0106 [pdf] submitted on 2024-12-17 16:37:03
Authors: Hamed Koochaki Kelardeh, Vadym Apalkov, Mark I. Stockman
Comments: 14 Pages.
We discuss the topological properties of graphene superlattices excited by ultrafast circularly-polarized laser pulses with strong electric field amplitude, aiming to directly observe the Berry phase, a geometric quantum phase encoded in the graphene's electronic wave function. As a continuing research on our recent paper, Phys. Rev. B 96, 075409, we aim to show that the broken symmetry system of graphene superlattice and the Bragg reflection of electrons creates diffraction and "which way" interference in the reciprocal space reducing the geometrical phase shift and making it directly observable in the electron interferograms. Such a topological phase shift acquired by a carrier moving along a closed path of crystallographic wave vector is predictably observable via time and angle-resolved photoemission spectroscopy (tr-ARPES). We believe that our result is an essential step in the control and observation of ultrafast electron dynamics in topological solids and may open up a route to all-optical switching, ultrafast memories, and petahertz-scale information processing technologies.
Category: Condensed Matter
[1] viXra:2412.0048 [pdf] submitted on 2024-12-09 21:13:41
Authors: Alireza Jamali
Comments: 5 Pages. Distributed under CC BY-NC 4.0 (Note by viXra Admin: Please cite and list scientific references)
It is shown that a spinning magnetic dipole (magnet) effectively behaves as a magnetic charge, creating magnetic current. The question of a `magnetic conductor' then immediately arises, for without their practical existence pursuing `magnetonics' would seem futile. Applying a rotational version of the Drude model to materials with magnetic dipoles I then conclude that the existence of magnetic conductors is indeed possible. I then sketch the idea of preparing a `magnetolyte' which is the foundation of operation of any `magnetic battery', without which magnetonics is impossible.
Category: Condensed Matter
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