Materials Literature
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Polycrystalline Er3+/Yb3+ co-doped CaMoO4 (CaMoO4:Er3+/Yb3+) film was successfully fabricated by a spray coating method. Crystal structure, surface morphology and upconversion (UC) luminescent properties were investigated. Under 980-nm excitation, CaMoO4:Er3+/Yb3+ film exhibited strong green UC emissions at 530 and 55…
The thermoelastic behaviors of such as temperature distribution, displacements, and stresses in thermal barrier coatings (TBCs) are seriously influenced by top coat thickness and edge conditions, which were investigated based on the thermal and mechanical properties of plasma-sprayed TBCs. A couple of governing partia…
In this study, the gas-atomized Cu-15%Ga alloy powder was consolidated by cross-roll rolling using copper can without crack and oxidation, where the roll axis was tilted by 5 degrees against TD in the RD-TD plane. Microstructures of formed Cu-15%Ga alloy were examined by X-ray diffraction (XRD), scanning electron micr…
Enabling perfect light absorption in ultrathin materials promises the development of exotic photonic devices. Here we demonstrate new strategies that can provide capabilities to rationally design ultrathin (thickness < λ/10~λ/5) semiconductor perfect absorbers for arbitrary wavelengths, including those at which the in…
The effect of milling time on the microstructure and mechanical properties of Al and Al–10 wt.% Mg matrix nanocomposites reinforced with 10 wt.% Al2O3 during mechanical alloying was investigated. Steady-state situation was occurred in Al–10Mg/10Al2O3 nanocomposite after 20 h, due to solution of Mg into Al matrix, whil…
Водород является одним из самых распространенных химических элементов в природе. Молекулярный водород вступает в реакции с немногими химическими элементами, но, превращаясь в ради-кал, взаимодействует со многими. Насыщение металла водородом приводит к наводороживанию и разрушению. Приводятся хронология и сущность проц…
The objective of this thesis work is to utilize computational models to reliably predict the intrinsic signature of the weapons-grade plutonium separated from a Pressurized Heavy Water Reactor (PHWR), specifically an Indian 220 MWe PHWR. The PHWR produced weapons-grade plutonium due to the low-burnup seen by the fuel…
The coil-stretch transition in extensional flows of viscoelastic dilute\npolymer solutions is known to be associated with a strong hysteresis in\nmolecular conformations and rheo-optical properties. At infinite dilution,\nhysteresis is caused by the large difference in frictional drag coefficient\nbetween undeformed i…
We report the patterned growth of Au nanoparticles (NPs) on polarity-patterned polycrystalline lead zirconate titanate (PZT) as a template through photochemical reaction. The photochemical deposition of the Au NPs includes ultraviolet (UV) light illumination of the patterned PZT while immersed in a HAuCl4 solution. In…
The properties of nanomaterials was strongly affected by their microstructures. Here Mg5(CO3)4(OH)2 x 4H2O multilayer pancakelike structures were fabricated successfully by reaction of MgCl2 and Na2CO3 in aqueous solution at 363 K. The growth process of nanostructures was observed by XRD and SEM. Several transition st…
In this study, the Janus silica particles were prepared by grafting reaction based on the sol-gel method. Before the surface modification reaction, the silica particles were trapped in the PS layer and some fraction of their surface were only reacted with APTES. XPS analysis confirmed that the nitrogen compounds were…
Applicability of nonlocal models to nano-beams is discussed in terms of the Eringen's nonlocal Euler-Bernoulli (EB) beam model. In literature, most work has taken the axial coordinate derivative in the Laplacian operator presented in nonlocal elasticity. This causes that the non-locality always makes the beam soften a…
Cancer cells overexpressing folate receptors have been targeted using a folate decorated carriers for anti-cancer drugs in aims to overcome the tissue non-specificity of anti-cancer agents. We here prepared magnetic nanoparticles and surface-decorated them with different amounts of folate to optimize the number of the…
The effect of C60 fullerene aqueous colloid solution (C60 FAS) on activity of redox and proliferative processes in PKE (transplantable cell line of pig kidney embryo) cells has been studied. In particular, it was established that the presence of C60 fullerene (127 microM) in culturing medium of PKE cells during 48 h d…
Sensing characteristics of the spin-coated Au/ZnO nanoparticles thick films with different Au concentrations have been studied for various gases, namely, CO, SO2, ethanol and acetone. The influence on a dynamic range of Au concentration on ethanol response (0.005-0.1 vol.%) of thick film sensor elements was studied at…
A biphenyl derivative containing two D-Ala-D-Ala moieties was found to form fluorescent nano/microfibers when subjected to self-assembly conditions in aqueous EtOH. Incubation of the nano/microfibers with vancomycin results in the disappearance of the fibers along with a significant decrease in the fluorescence intens…
Solventless silica-acryl hybrid materials composed of organically modified silica nanoparticles and acryl monomers were fabricated using a simple sol-gel process and solvent evaporation. The homogeneously dispersed silica-acryl hybrid materials can be formed into films through a simple solution-coating process and UV…
We report the synthesis of new polyamides containing 2,6-bis(2-thio-2-(4-carboxyphenyl)-1-oxo)pyridine subunit, under microwave irradiation using Yamasaki phosphorylation method. The solubility, thermal behavior, and viscosity of polyamides were evaluated. The structures of polymers have been characterized using IR an…
International audience
Amorphous binary Ti(100-x)Cu(x) (x = 40, 50 and 60 at%) alloys, as the starting materials, were dealloyed in 0.03 and 0.13 M HF solutions under a free immersion condition, and a uniform nanoporous structure with a pore size of 71-220 nm and ligament size of 72-209 nm was obtained after immersion for 43.2 ks. The evolu…