Materials Literature
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This paper presents a surface science perspective on sidewall functionalisation of carbon nanotubes. Carbon nanotubes are varyingly described by physicists as extended solids or by organic chemists as molecules. As prototypical nanostructures, they are indeed a little bit of both. Their chemistry and resulting potenti…
Abstract Summary: Monodisperse polystyrene (PS) microspheres with different sizes were prepared by dispersion polymerization in dispersion media of ethanol/water and isopropayl alcohol/water, respectively. The effect of polarity of the dispersion medium, stabilizer and initiator concentration on the average sizes and…
The effect of annealing on the pitting corrosion resistance of anodized Al–Mg alloy processed by equal-channel angular pressing (ECAP) was investigated by electrochemical techniques in a solution containing 0.2 mol·L−1 of AlCl3 and also by surface analysis. The degree of internal stress generated in anodic oxide films…
In our pursuit to develop suitable therapeutic particulate systems for intratumoral delivery by the targeted multi-therapy (TMT) technique, we describe the preparation of paclitaxel-loaded poly(D,L-lactic-co-glycolic) acid (PLGA) microparticles (MPs) (drug loading 35-38%, wt/wt; size 0.7-5 microm). Magnetite (15%, wt/…
Multiwalled carbon nanotubes (MWCNTs) were prepared by the thermal chemical vapor deposition (CVD) technique. Monometallic and bimetallic Co and Ni combinations were used as a catalyst on MgO support. The mixer of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mtext>H</mml:mtext><mml:mn>2</mml:…
The ionic transport properties of dense nanocomposites of yttria-doped ceria (YDC) and yttria-stabilized zirconia (YSZ), in a volume ratio of 1 : 1, have been investigated by electrochemical impedance spectroscopy. These materials were prepared by means of a fast-firing process starting from nanopowders with high spec…
J-type aggregation of organic chromophores into inorganic host matrixes provides a useful route toward materials showing strong second-order nonlinear optical (NLO) response. The increased NLO response of J-aggregates is related to the peculiar arrangement of the NLO-phores into the host matrix, which produces the app…
Single crystal X-ray structure determinations of [(n-C5H11)4N]3[H3V10O28].2(CH3)2CO (TAA-acetone), [(n-C5H11)4N]8[H3V10O28]2[H4V10O28].7C4H8O2 (TAA-dioxane), [(n-C5H11)4N]3[H3V10O28] (TAAh) and [(n-C6H13)4N]2[H4V10O28].4C4H8O2 (THA-dioxane) revealed that protonation and hydrogen bond formation of decavanadate anions i…
We reported an approach to fabricate integrated arrays of palladium (Pd) and platinum (Pt) nanotubules with high aspect ratios on aluminum sheets by a critical-potential anodization and an electroless deposition. The critical-potential anodization provided ordered porous anodic alumina (PAA) films as supporting materi…
In this paper we demonstrate the hydrogenolysis of nickelocene can take place through a self-catalyzed process at low temperature ( < 70 ° C ) in supercritical carbon dioxide to generate relatively uniform dispersed Ni (nickel) metal particles onto carbon nanotubes forests and Ni films on flat surfaces. The ability to…
Poly(ether imide) (PEI) membranes of which the surface was modified with carboxylic groups were tested in comparison to pure PEI and poly(ethylene terephtalate) (PET) for their ability to support attachment, growth and function of human umbilical vein endothelial cells (HUVEC) with respect to endothelization of the ab…
A series of new achiral porphyrins with hydrophobic dodecyl chains and hydrophilic substituents were designed in order to clarify the relationship between molecular geometry and aggregation as well as the supramolecular chirality in Langmuir-Schaefer films. These achiral porphyrins have zero (TPPA0), one (TPPA1), two…
A highly efficient porphyrin synthesis facilitates a systematic investigation of the effects that secondary substituents have on the physical properties, crystal structures, and nanoparticle morphologies of amphiphilic (porphyrin)Sn(OH)2.
The role of hydrogen in hydrogen embrittlement, stress corrosion cracking and hydrogen induced cracking has been largely determined. The hydrogen cracking problem in metallurgical fields has been studied for many years. In spite of that, it is still not possible to explain exactly how the presence of hydrogen within t…
Generalized Ellingham diagram for the P-O-H and the Ni-P-OH systems have been constructed to investigate thermodynamically the chemical stability of nickel anode against the gaseous impurities containing phosphorous compounds. In the same way as the original Ellingham diagram, the oxygen potential is used as the verti…
Hydrogenated In-doped ZnO (IZO:H) anodic films grown at different ratios ( R ) of hydrogen to argon were deposited at a low processing temperature of 100 °C on a glass substrate by pulsed DC magnetron sputtering for photovoltaic cells. Even at a low substrate temperature, the transparent electrode showed an average op…
The aim of this study was to design a functional bio-engineered material to be used as scaffold for autologous mesenchymal stem cells in ligament tissue engineering. Polyelectrolyte modified HEMA hydrogel (HEMA-co-METAC), applied as coating on silk fibroin fibres, has been formulated in order to take advantage of the…
Nanocrystalline zinc oxide (nc-ZnO) thin films with c-axis orientation were deposited on Si (100) substrates at a temperature lower than 100 °C by plasma assisted pulsed laser deposition from metallic zinc. Oxygen plasma generated by electron cyclotron resonance (ECR) microwave discharge was used as a reactive and ene…
The characteristics of the phase retardations and the invariability against the incident angles are investigated when light enters the rectangular holes with different sizes perforated on metallic film. A kind of metallic structure with a great potential in imaging is brought forward. The finite difference time domain…
Optical properties of silicon-rich–silicon oxide (SRSO) films have been investigated by emission and absorption spectroscopies in the broad spectral range. The impact of the different hydrogen partial pressure of the sputtering method on the absorption properties of SRSO films has been described and commented on. For…