This study investigates the functionalization of gold-coated magnetoelastic sensors with thionine molecules, focusing on resonance frequency shifts. The process was characterized by using Raman spectroscopy and analyzed via scanning electron microscopy atomic force microscopy, revealing progressive formation molecular clusters over time. Our results demonstrate that longer time leads to saturation surface coverage cluster formation, impacting sensor's Such modifications offer insights into...

Abstract We report the role of bandgap energy in Cd 1−x Mn x Te thin films photoinduced crystallization tellurium under prolonged exposure to visible light. Raman spectroscopy was used quantify evolution trigonal phase ( t -Te) over time. Our results reveal that when incident photons exceeds energy, photocrystallization process seems be controlled by diffusion and consistent with growth one-dimensional forming crystalline structures. Conversely, excitation is lower than effect completely...

This study investigated the use of ladle furnace slag fines (FLF) for soil stabilisation. It contributes to current state-of-the-art by comparing effects FLF on engineering properties clayey and sandy soils, evaluating different curing periods mechanical performance soil-FLF mixtures, investigating resilient behaviour stabilised tropical soils. The present experimental programme covers characterisation compaction, unconfined compression, diametral CBR, modulus tests mixtures. provided...

Carbon-black nanoparticles (CBN) have been incorporated into cement-based materials for improvement of mechanical or self-sensing properties. There is no previous research focused on the microstructural evaluation effects CBN both parameters. In this work, mortars containing different contents were produced, cured 28 days, and subjected to electron microscopy (SEM), X-ray diffraction (XRD) Raman spectroscopy. Tests determination compressive strength, modulus elasticity piezoresistivity...

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Fire is a significant threat to human lives and the integrity of buildings. To better understand complex behavior masonry exposed high temperatures, thermal analyses were carried out evaluate temperature distribution in concrete blocks stack-bond prisms levels. The effects distinct specimen boundary conditions (restrict or easy access air circulation inside voids block prisms) on response materials investigated. Thersys 2.0 software was used implement three-dimensional analysis finite...

We have fabricated graphene devices on lightly doped Si substrates and show that pronounced changes in resistance versus gate voltage, R(Vg), characteristics of these at 77 K are induced by the variation charge distribution substrate with both voltage illumination. The R(Vg) dark shows remarkable as carriers underlying go through accumulation, depletion, inversion regimes. demonstrate possibility using a device an optical-latch.

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The structural performance of civil engineering infrastructures exposed to elevated temperatures has been investigated in many recent works. Some these studies evaluated the residual mechanical behavior masonry prisms subjected high temperatures, as specimens are simplified models (2–5 units height) that can be easily produced and tested, terms operational economic factors. However, there is no previous literature review on properties fire-damaged prisms. Therefore, this paper presents an...

The combined use of electric arc furnace slag fines (EAFSF) and ladle (LFSF) for soil stabilisation was not evaluated in previous works. Previous studies reported limited information on the microscale behaviour steel materials used stabilisation. This work synergistic effects provided by combination EAFSF LFSF clayey sandy soils. It a detailed analysis raw slag-soil mixes with scanning electron microscopy, X-ray diffraction, fluorescence, Raman spectroscopy, thermogravimetric analysis,...

The association of organic molecules with two-dimensional (2D) materials, creating hybrid systems mutual influences, constitutes an important testbed for both basic science self-assembly studies and perspective applications. Following this concept, in work, we show a rich phenomenology that is involved the interaction thionine graphene, leading to material formed by well-organized self-assembled structures atop graphene. This composite system investigated atomic force microscopy, electric...

We initially reported the synthesis, characterization of structural, optical, morphological, and photocatalytic properties Ag1.98Cu0.02WO4 solid solution in this work. The results were compared with same characterizations performed pure silver tungstate. Both materials exhibited an orthorhombic structure, a high degree crystallinity purity. Although, small number copper atoms unit cell detected by changes X-ray diffraction peak intensity shift positions corroborates observed micro-Raman...

Due to the growing demand for miniaturization and energy efficiency in modern electronic devices, there is a renewed interest optoelectronic memories sensors based on 2D materials. In particular, molybdenum ditelluride (MoTe2) one of most promising materials applications nonvolatile phase-change memory as its properties can be controlled by visible-light illumination. Among several ways synthesize MoTe2, oxide tellurization through isothermal close space sublimation (CSS) annealing gas...