Materials Literature
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Schiff base N-benzylidene-4-dodecylaniline (N-bda) was synthesised. The inhibition behavior of the N-bda on the corrosion of copper in a 0.5 mol/L NaCl solution was investigated by SEM, AFM, polarisation curves and electrochemical impedance spectroscopy. SEM and TEM indicate that after N- dba molecules self-assembled…
Abstract: A prototype of homemade furnace was built and the highest temperature it can reach during the trial process is approximately 400OC. Beside liquid metal, the furnace also produced exhaust gas as a side product. The exhaust gas is still hot. Hot gas can be used to improve the furnace’s temperature based on bla…
Despite decades of research into new drugs and contrast agents, cancer remains prevalent around the world. Advances in nanotechnology have shown that colloidal nanocarriers have the potential to improve the performance of anti-cancer agents through more localized delivery, provided that the physical properties of thes…
Abstract not provided.
El desarrollo de las nanoparticulas semiconductoras conocidas como quantum dots (QDs) ha evolucionado en las dos ultimas decadas del area de la ciencia de los materiales a las aplicaciones biologicas y clinicas. Los QDs estan emergiendo como una nueva clase de marcadores luminiscentes con especial luminosidad, resiste…
Growth factors and morphogens regulate embryonic patterning, cell fate specification, cell migration and morphogenesis. The activity and behaviour of these signalling molecules is regulated in the extracellular space through interactions with proteoglycans. Proteoglycans are high molecular-weight proteins consisting o…
Les polyhydroxyalcanoates sont des polyesters synthétisés par un grand nombre de microorganismes en réponse à des conditions de déséquilibres énergétique et nutritionnel. Les conditions de culture, la nature du substrat carboné ainsi que naturellement les microorganismes, vont déterminer la nature chimique et les cara…
Les matériaux composites à matrice céramique ont été développés pour des utilisations en conditions extrêmes : haute température, milieu oxydant, sous contrainte mécanique, voire sous irradiation. Bien que composés de céramiques, ces matériaux sont "défragilisés" afin d'éviter leur rupture catastrophique, ce qui a per…
Les polymères conducteurs sont au cœur du développement d’une nouvelle génération de dispositifs thermoélectriques. Leur flexibilité, leur facilité de mise en forme, leur faible toxicité, les rendent très attractifs pour des applications à large échelle. Alors que le dopage permet d’augmenter leur conductivité électri…
Le béton armé est le matériau de construction le plus répandu dans le monde. Le processus de corrosion est un phénomène électrochimique qui se produit au sein du béton. Il a lieu à la suite de la carbonatation du béton d'enrobage et/ou de la pénétration des ions chlorures. Pour améliorer la durabilité des ouvrages en…
Magnesium and calcium have noteworthy contribution in determining skeletal biomineralogy of calcifying marine organisms. Their concentration in shallow water differs from open water. Secular changes in oceanic Mg:Ca driven by mid oceanic ridge activity considered as the decisive factor of Mg:Ca in ocean water througho…
Thin film solar cells are important for making photovoltaic technologies affordable and easily fabricated. The main objective of research into thin film solar cells is to achieve high-energy convert efficiency with easy manufacturing methods and accessible elements. Thin film solar cells based on organometal halide pe…
The energy absorption capacity of cellular materials can be dramatically increased by applying a structural coating. This thesis examined the failure mechanisms of alumina reinforced 3003 aluminum alloy microtrusses and tubes. Alumina coatings were produced by hard anodizing and by plasma electrolytic oxidation (PEO).…
Zn doped Ba germanate nanorods have been prepared by the hydrothermal process and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and solid UV-vis diffuse reflectance spectroscopy. XRD analysis shows that the Zn doped Ba germanate nanorods consist of hexagonal Ba2Ge5O12 and rhombohedral Zn…
A combination of solvent refining and slag treatment was employed to investigate the possibility of removing boron and phosphorus from crude silicon to acceptable levels for solar applications. Metallurgical grade silicon (MG-Si) was alloyed with pure copper and the alloy was subjected to refining by liquid CaO-SiO2-N…
With very few previous publications on polytellurophenes prior to 2009, this is a largely unexplored class of conjugated polymers. This thesis details investigations into two types of tellurophene polymers. The synthesis of four novel tellurophene containing polymers is described and the characterization of their opti…
The field of organic photovoltaics have seen significant growth over the last decade. In particular, bulk heterojunction devices are the currently favored device in organic photovoltaics due to the ability to optimize their active layer morphology. The active layer has the most potential for growth to produce devices…
Nanoporous metals formed by electrochemical dealloying of silver from Ag-Au-Pt alloys, with 77 at.% silver and platinum contents of 1, 2 and 3 at.%, have been studied. The presence of platinum, which is immobile relative to gold, refine the ligament size and stabilized the nanostructure against coarsening, even under…
Polypyrrole (PPy) as a conducting polymer has exhibited great potential for the fabrication of bending type actuators and conjugated polymer based mechanical sensors. Considering the structure and performance of any actuating or sensing device, it is of pivotal importance to study the roles and relationships of associ…
Colloidal Quantum Dots (CQDs) are nanoscale quantum-tuned semiconductor particles suspended in solution. When deployed as optoelectronic materials, CQDs are closely packed together into thin films enabling charge transport. This also enables the formation of semiconductor junctions and contacts with other bulk semicon…