Condensed Matter

2501 Submissions

[2] viXra:2501.0173 [pdf] submitted on 2025-01-31 21:16:52

Self-Healing Metal Film Capacitors: Quo Vadis?

Authors: Nadezhda Andreeva, Vitaly V. Chaban
Comments: 26 Pages.

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 are self-healing capacitors, which have the ability to recover after an electrical breakdown. The self-healing phenomenon significantly increases the service life of the device. This review presents a comprehensive analysis of the currently known self-healing mechanisms in metal film capacitors. The role of the self-healing phenomenon in increasing the number of capacitor working cycles is discussed. The molecular processes underlying the significantly different self-healing potential of dielectric polymers are verified. The review is addressed to specialists in electrical engineering.
Category: Condensed Matter

[1] viXra:2501.0156 [pdf] submitted on 2025-01-29 03:11:51

Difference Between Homo & Lumo, and Electron Density Avoiding Common Misconceptions in Photocatalytic (DFT) Research in Nanomaterials

Authors: Zi-Jing Chiah
Comments: 3 Pages. (Note by viXra Admin: Please cite and list scientific references)

This article explores the distinction between HOMO (Highest Occupied Molecular Orbital), LUMO (Lowest Unoccupied Molecular Orbital), and electron density in molecular and material sciences. While HOMO and LUMO describe specific energy levels relevant to electronic transitions, electron density represents the spatial distribution of all electrons in a system. The article addresses common misconceptions in research, particularly in density functional theory (DFT) studies, where shifts in HOMO/LUMO positions are often mistakenly equated with changes in electron density. Clear differentiation and complementary analyses are emphasized to ensure accurate interpretations in fields like photocatalysis and electronic materials.
Category: Condensed Matter