Materials Literature
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O tratamento térmico é amplamente utilizado na indústria automotiva para garantir propriedades mecânicas adequadas aos componentes submetidos a elevadas solicitações de carga e desgaste. Este estudo teve como objetivo avaliar a influência do tempo e da temperatura de revenimento no aço SAE 4122, visando reduzir o temp…
We develop an analytical theory for the dense packing of hard spheres in cylinders. Physically, our theory consists of a finite cylindrical masking of a close-packed three-dimensional solid and covers the entire range of cylinder aspect ratios, thus going beyond efforts that are focused on very tall cylinders in a nar…
ABSTRACT Anodic coating (~10–20 µm) was developed on AA2014 (Al‐Cu‐Mg) and AA6351(Al‐Mg‐Si) aluminum alloys for spacecraft applications (brackets, modules and metallic decks). The anodization was carried out in an electrolyte bath of sulfuric acid and a mixture of sulfuric acid and oxalic acid, for AA6351 and AA2014 a…
Light can induce both photothermal and nonthermal catalytic activity in plasmonic nanoparticles, but the extent, timescale, and efficacy of these two mechanisms remain unresolved. Here we introduce pump-pump photocatalysis, an adaptation of ultrafast excitation correlation spectroscopy in which incident laser pulses a…
Abstract Minimizing power consumption and improving long-term stability of bioelectronic devices are crucial for ensuring prolonged operation and reducing the risk of tissue damage. Organic electrochemical transistors (OECTs) have gained widespread attention in biosensing applications due to their high transconductanc…
We develop a thermomechanical framework for viable Horndeski scalar hair with spacelike scalar-field gradients. Adapting the $(1{+}1{+}2)$ formalism to the scalar configuration, we apply the effective imperfect-fluid decomposition to the model and derive general results governing its thermomechanical properties. Speci…
Background: The widespread use of ionizing radiation in medical and industrial applications has increased the demand for effective and lead-free radiation shielding materials. Rare earth doped glass systems have attracted attention due to their optical transparency and favorable attenuation properties. Objectives: Thi…
The structure of the material plays an important role in determining the electrical, magnetic, and electromagnetic properties of the material. Aluminium-doped M-type barium hexaferrite, BaFe11.5Al0.5O19 has been prepared using the sol-gel auto-combustion method and systematically studied to understand the structural a…
High-density, semiconducting aligned carbon nanotube arrays (A-CNTs) are essential for next-generation electronics. Dimension-limited self-alignment (DLSA) is a leading route to wafer-scale A-CNT fabrication, yet the instabilities that limit array quality remain poorly understood, hampering targeted process optimizati…
The emergence of clean energy around the globe has propelled the development of electric vehicles (EVs), which are considered to be environmentally sustainable means of transport compared to those run on fossil fuels. However, the utilization of rare earth elements (REE) containing permanent magnets in the EV traction…
Achieving high quantum yields in neat films of extended heteroacenes remains challenging because their large aromatic surfaces promote aggregation-caused quenching and non-radiative decay, while often limiting solubility and processability. Here we introduce proximal steric shielding to control solid-state emission in…
We demonstrate that Mn$_3$Sn hosts finite intra-atomic magnetic octupoles (AMOs) $\mathbf{o}$ in addition to the well-established cluster magnetic octupole (CMO) $\mathbf{O}$. In contrast to the cluster-scale CMO, the AMO is a site-localized magnetic multipole associated with the anisotropic intra-atomic spin density.…
For each $d\in\N_{\geq 2}$ we construct a Delone set $Y$ in $\R^{d}$ for which every Lipschitz bijection from $Y$ to $\Z^{d}$ has a very irregular inverse. For example, the inverse fails to be Lipschitz, even at just a single point. Further, we clarify the relationship between several notions of regularity for bijecti…
This research work was currently found in the Southern National Regional State of Debub Omo river valley, southern Ethiopia. It is conducted for mainly to delineate a marble resource found within the Korcho, Wolayte and Basa localitie in order to specify its field of application accordingly the field observation and s…
Growing concerns about sustainability and environmental impact have driven the development of alternative materials, such as polymer composites reinforced with natural fibers. However, a gap remains between scientific advances and large-scale industrial applications of these composites. This study aimed to develop euc…
Marine chains operate under corrosive and impact-prone conditions, yet the combined influence of seawater exposure, notch condition and test temperature on their impact toughness remains insufficiently clarified. This study addresses this gap by examining the Charpy V-notch impact response of AISI 1008 steel extracted…
In this study, polyamide 6/poly(butylene-adipate-terephthalate) (PA6/PBAT) blends, potentially applied as novel self-healing matrices for structural composites, were developed and characterized. The blends were melt-compounded at different PBAT amounts (from 20 up to 50%vol) and hot pressed. Rheological analysis showe…
This study investigates the high-temperature corrosion behavior of AISI 304 stainless steel (0Cr18Ni9) exposed to a novel hydrophobic and oleophobic KAl(OH) 2 CO 3 ultrafine dry powder fire-extinguishing agent, aiming to assess its corrosion characteristics and application safety in extreme high-temperature environmen…
ABSTRACT The detection and removal of persistent pharmaceutical pollutants in aquatic matrices require the development of highly efficient and structurally robust photoelectrocatalytic platforms. This study reports the architectural engineering of a hierarchical photoanode based on niobium nanochannels (NbNC) decorate…
This revised article addresses Q0039, 'Learn from failed reactions and negative experimental data?' using a question-specific mathematical construction rather than a generic logarithmic template. The proposed model, termed the Failure-Informed Reaction Boundary Model, uses positive outcome y=1, experimentally failed o…