Tsallis $$\delta $$ δ -entropy in an accelerating BIon

Abstract

In this research, we consider thermodynamically the behaviour of an accelerating BIon and show that the entropy of this system has the form of Tsallis entropy. A BIon is a system that consists of a brane, an anti-brane and a wormhole which connects them together. By increasing the acceleration of branes, the area of BIon increases and its Tsallis entropy grows.

Explosives sensing using Ag–Cu alloy nanoparticles synthesized by femtosecond laser ablation and irradiation

“…However, there was only a small change in the average size of NPs. A quick decrease in intensity of Cu NPs SPR peak aer prolonged irradiation (30-90 min) could be ascertained to the larger absorption cross-section of Cu NPs (in comparison to Ag NPs) at 800 nm as observed by Ghaforyan et al 33 and also the melting temperature of metal NPs decreases with the size of the NPs (average size of Cu NPs < average size of NPs). However, to arrive at the complete understanding of variation in absorption band intensities of irradiated NPs, further investigations are warranted.…”

An investigation using DFT into the impact of hydrogen on oxygen migration processes during aluminum anodization

“…In order to understand the growth mechanism of the porous layers during anodizing, several experimental studies 5 have investigated the effect of the anodizing conditions, especially the chemical composition of the electrolyte, voltage or current density, on most structural parameters of AAO, such as nanopore diameter and wall thickness. Furthermore, several models, such as the eld-assisted model, 6,7 the stress-induced plastic ow model, 8,9 the volume expansion stress model 10,11 and the oxygen bubble mold model, [12][13][14] were proposed to elaborate the growth mechanism of the porous layers during anodizing. Although these theories are different, they are all based on a common cognition: the formation of AAO is a competition between the two reactions of aluminium oxidation and alumina dissolution.…”