Materials Literature
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In the last 30 years we have assisted to a massive advance of nanomaterials in material science. Nanomaterials and structures, in addition to their small size, have properties that differ from those of larger bulk materials, making them ideal for a host of novel applications. The spread of nanotechnology in the last y…
Protein adsorption is considered to be the most important factor of the interaction between polymeric biomaterials and body fluids or tissues. Water-mediated hydrophobic and hydration forces as well as electrostatic interactions are believed to be the major factors of protein adsorption. A systematic analysis of vario…
Nanofiber-forming technology There are a number of techniques capable of fabricating nanofibers. These techniques include conjugate spinning, chemical vapor deposition, drawing, template synthesis, self-assembly, meltblown and electrospinning. Conjugate spinning (island in the sea) Sea–island-type conjugate spinning i…
The spin Hamiltonian parameters (zero-field splitting D, g factors and hyperfine structure constants) are theoretically studied for Mn2+ in the ZnS nanocrystals and bulks from the perturbation formulae of these quantities for trigonal and cubic tetrahedral 3d5 clusters, respectively. The trigonal Mn2+ centre in the Zn…
We describe the synthesis of spin-labeled bis-ureas which coassemble with bis-urea gelators and report on self-assembly as detected using electron paramagnetic resonance spectroscopy (EPR). Specifically, EPR detects the gel-sol transition and allows us to quantify how much spin-label is immobilized within the gel fibe…
Temperature-dependent conductivities at dc and terahertz (THz) frequency region (σTHz(ω,T)) were obtained for a strongly correlated (La0.275Pr0.35Ca0.375)MnO3 (LPCMO) film using THz time domain spectroscopy. A composite model that describes σTHz(ω,T) for LPCMO through the insulator-metal transition (IMT) was establish…
Layer-by-layer structures of dodecanethiol-encapsulated Au nanoparticles have been formed on Si(001) and quartz substrates at different surface pressures by Langmuir-Blodgett method. Optical absorption spectra and out-of-plane structural information have been obtained from UV-Vis spectroscopy and X-ray reflectivity me…
We demonstrate an inspection technique, based on only one ellipsometric parameter, Ψ, of spectroscopic ellipsometry (SE), for the rapid, simultaneous identification of both the structural quality and thicknesses of large-area graphene films. The measured Ψ spectra are strongly affected by changes in the out-of-plane a…
A sustainable procedure for recycling powdered rubber coming from scrap tires (ground tire rubber [GTR]) is proposed as based on the dispersion in polyketone (PK) matrix, obtained in situ by CO/ethylene copolymerization. Three types of catalysts are used operative in solvents of different polarities. The catalyst prod…
We investigated the normal-state resistivity ${\ensuremath{\rho}}_{xx}(T)$ and the Hall effect in Zn- and Co-doped ${\mathrm{Ba}}_{0.5}{\mathrm{K}}_{0.5}{\mathrm{Fe}}_{2}{\mathrm{As}}_{2}$ single-crystalline microbridges. A crossover temperature ${T}^{*}$ was observed in the temperature dependency of the longitudinal…
A hard template route has been successfully developed for synthesis of β‐ SiAlON : Eu phosphors at low temperatures. The synthesis utilizes mesoporous silica ( SBA ‐15) skeleton as an active Si source, combined with the carbothermal reduction and nitridation method. It has been shown that the additional driving force…
The application of magnesium alloys as biomaterials is limited by their poor corrosion behavior. Microarc oxidation (MAO) treatment was used to prepare ceramic coatings on ZK60 magnesium alloys in order to overcome the poor corrosion resistance. The process was conducted at different current densities (3.5 and 9.0 A/d…
We derive periodic multilayer absorbers with effective uniaxial properties similar to perfectly matched layers (PML). This approximate representation of PML is based on the effective medium theory and we call it an effective medium PML. We compare the spatial reflection spectrum of the layered absorbers to that of a P…
Azobenzene-based molecules forming a self-assembled monolayer (SAM) tethered to a glass surface are highly photosensitive and readily reorient liquid crystals in contact with them when illuminated with polarized actinic light. We probe the coupling of such monolayers to nematic liquid crystal in a hybrid cell by study…
A novel microwave pulsed‐plasma based method for the modification of the hydrogen‐terminated polycrystalline boron‐doped diamond (BDD) with a thin film of polymerized allylamine (PPAAm) is reported. A modified BDD surface is resistant to hydrolysis and delamination and is characterized by a high density of positively…
The synthesis mechanism of ultrananocrystalline diamond via laser shock processing of graphite suspension was presented at room temperature and normal pressure, which yielded the ultrananocrystalline diamond in size of about 5 nm. X-ray diffraction, high-resolution transmission electron microscopy, and laser Raman spe…
Deposition of nano‐crystalline diamond (NCD) over large areas is of high interest for industrial applications. For instance NCD is an excellent substrate for cell growth but it is also interesting for photonic applications associated with nitrogen‐vacancy (NV) centres. There have been many studies on the effect of nit…
Environmental context Characterisation of nanoparticles in terms of number concentration and aggregation state is essential for interpreting data from toxicological tests. These parameters have never been measured in situ in tests carried out in soil matrices. Here, environmental scanning electron microscopy imaging i…
The temperature dependence of the Raman spectra in the temperature range between 298 and 673 K was investigated for polycrystalline monolayer graphene films with defects, such as domain boundaries, synthesized by chemical vapor deposition. The Raman frequencies of G and 2D bands monotonically decrease with increasing…
Beryllide compounds are often used in various domains because they are more resilient to oxidation than pure beryllium and at the same time they keep some of the properties of this metal. Nevertheless, the data about their properties during atomic hydrogen exposure are very scarce: numerous experiments have been condu…