Materials Literature
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Development of highly sensitive and selective sensing systems of divalent zinc ion (Zn(2+)) in organisms has been a growing interest in the past decades owing to its pivotal role in cellular metabolism, apoptosis, and neurotransmission. Herein, we report the rational design and synthesis of a Zn(2+) fluorescent-based…
Electron-electron interactions and detector bandwidth limit the maximal imaging speed of single-beam scanning electron microscopes. We use multiple electron beams in a single column and detect secondary electrons in parallel to increase the imaging speed by close to two orders of magnitude and demonstrate imaging for…
Porous electrospun poly(ε-caprolactone) (PCL) fibres were produced through a non-solvent induced phase separation mechanism, using binary solvent systems with different properties. The effect of the solvent properties on the size and surface morphology of electrospun PCL fibres was investigated. Chloroform (CF), dichl…
Fast-response and high-sensitivity deep-ultraviolet (DUV) photodetectors with detection wavelength shorter than 320 nm are in high demand due to their potential applications in diverse fields. However, the fabrication processes of DUV detectors based on traditional semiconductor thin films are complicated and costly.…
Tungsten diselenide (WSe2) is a two-dimensional material that is of interest for next-generation electronic and optoelectronic devices due to its direct bandgap of 1.65 eV in the monolayer form and excellent transport properties. However, technologies based on this 2D material cannot be realized without a scalable syn…
A novel type of highly flexible and all-solid-state supercapacitor that uses cellulose nanofibril (CNF)/reduced graphene oxide (RGO)/carbon nanotube (CNT) hybrid aerogels as electrodes and H2SO4/poly(vinyl alcohol) (PVA) gel as the electrolyte was developed and is reported here. These flexible solid-state supercapacit…
Two-dimensional (2D) molybdenum disulphide (MoS2) atomic layers have a strong potential to be used as 2D electronic sensor components. However, intrinsic synthesis challenges have made this task difficult. In addition, the detection mechanisms for gas molecules are not fully understood. Here, we report a high-performa…
To verify the possibility of realizing down-shifting phenomena inside photovoltaic cover glass panels, silicate glasses where doped by ion exchange process. Different salt mixtures were compared. The effectiveness of the improvement of the power produced by a photovoltaic panel covered by the doped glasses was also te…
This dissertation can be divided into two separate sections. Chapters 2-5 constitute the first section and reflect my general interest in magnetoelastic interactions in ultra-thin film structures. I became interested in both the fundamental structure and origin of magnetoelastic interactions in ultra-thin films as wel…
WS2, MoS2 and ZrS2 nanomaterials in various forms, such as nanoflakes, inorganic fullerene-like nanoparticles and nanorattles, were synthesised using two modified conventional techniques: solid-gas reaction and chemical vapour deposition. Both of these techniques are essentially based on reactions between metal oxides…
When materials for application in aircraft structural components are studied, it must be considered that they will be submitted to cyclic loading, and this is an important parameter to design the study in fatigue life of the materials. Whereas, for example, a landing gear operation, the study of fatigue life and corro…
This work focuses on the determination of the carrier diffusion length in two wide bandgap semiconductors: the ternary alloy ZnMgO and diamond. This determination has been achieved by using of ZnMgO/ZnO/ZnMgO and 13C/12C/13C heterostructures containing ZnO or 12C collecting wells. Their transverse section was scanned…
Ce travail de thèse porte sur la diffusion des porteurs de charge en excès dans deux semiconducteurs à large bande interdite: l’alliage ZnMgO et le diamant 13C. Il est basé sur l’étude d’hétérostructures ZnMgO/ZnO/ZnMgO et 13C/12C/13C à puits de collecte ZnO ou 12C. Sur leurs sections transverses et avec la résolution…
L'intégration 3D, mode de conception par empilement des puces, vise à la fois la densification des systèmes et la diversification des fonctions. La réduction des dimensions des interconnexions 3D et l'augmentation de la densité de courant accroissent les risques liés à l'électromigration. Une connaissance précise de c…
Clays are materials with specific properties that make them promising for various studies. In this work we used the vermiculite clay as support for iron compounds, in order to obtain promising materials for application in the heterogeneous type photo-Fenton process. In all, the study included six solid, starting from…
Estudos sobre o comportamento térmico, de interação fármaco-excipiente e sobre polimorfismo do Carvedilol (1-(9H-Carbazol-4-iloxi)-3-[[2-(2-metoxifenoxi)etil]amino]-2-propanol), um fármaco da família dos β-bloqueadores, frequentemente utilizado no tratamento de doenças do coração e isquemias foram desenvolvidos, usand…
The questions of transfer of radio-active sedimentov in reservoirs are examined. The basis for the design of diphasic flows is solution of the Navier-Stokes equations system and turbulent motion of liquid in the limited area of reservoir (rivers). For solution of equations system of radioactive pollution convection tr…
This study was conducted to determine botanical composition of a pasture in Derik-Bingöl. In the study, 53 plant species from 38 different genuses of 16 plant families were detected. Results of the study showed that 53.25% of the pasture was vegetated. Percentages of grasses, legumes and other family plants in the tot…
Despite the fact that it is now accepted that the particle size and the support in heterogeneous catalysts strongly influences the activity and selectivity of the catalysts, it has been a challenge to measure such effects systematically, especially on model systems. A high-throughput (parallel) thermographic screening…
Extended X-ray absorption fine structure spectroscopy (EXAFS) has been used to characterise polyoxometalate (POM) species and study their reactions on the minute time-scale. Lindqvist-type tungstates have been characterised using quick extended X-ray absorption fine structure spectroscopy (QEXAFS). Differentiation bet…