Materials Literature
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The main distinguishing feature of the fiber is simply that it is a particle where the ratio of length to width ratio is very large. This provides connectivity between two relatively remote areas. Such linkage may confer strength through physical linkage or may relate primarily to information transfer. In the inorgani…
Holographic polymer dispersed liquid crystals (H-PDLC) are made by holographic recording in a photo-polymerization induced phase separation process in which the liquid crystal molecules diffuse to dark zones in the diffraction grating. The devices with H-PDLC materials develop a dynamic behavior that may be modified b…
This paper presents the synthesis of gold nanoparticles (AuNPs) suitable to the construction of engineering biosensors. The phenomenon of Localized Surface Plasmons Resonance (LSPR) and Surface Plasmon Polarization are explored in these sensors. AuNPs allow developing nanoscale devices that interacts with chemical and…
The spectral shifts measured in different solvents are expressed as functions of the solvent macroscopic parameters. The value of the correlation coefficient multiplying the functions of electric permittivity was determined by statistical means. The correlation coefficient depends on the electric dipole moment of the…
Hydrogen and heat energy from the reaction of magnesium with water can be used for engines and fuel cells. However, at least 4000 K is necessary for magnesium oxide reduction. Ultra high brightness solar-pumped lasers become essential to make this renewable process technology efficient and economically competitive. 2.…
Recently we developed a new method of spherical submicron particle production by pulsed laser irradiation of primary small irregular nanoparticles suspended in liquid. For the first time we demonstrated that the nanoparticles can not only reduce their sizes under the pulse laser irradiation, but can grow essentially.…
See accompanying article by Werner Müller et al. DOI: 10.1002/biot.20140027710.1002/biot.201400277 Müller and co-workers have shown an innovative approach that combines electrospinning of synthetic materials to form electrospun poly(ϵ-caprolactone) (PCL) nanofiber mats [1]. It is possible to use the PCL nanofibers mat…
The LIFE+ Project SIRENA, Simulation of the release of nanomaterials from consumer products for environmental exposure assessment, (LIFE11 ENV/ES/596) has set up a Technological Surveillance System (TSS) to trace technical references at worldwide level related to nanocomposites and the release from nanocomposites. So…
Zinc oxide is a wide, direct band gap II-VI oxide semiconductor. Pure and Eu-doped ZnO films are prepared by RF Magnetron sputtering at different doping concentrations (0.5, 1, 3 and 5 wt %). The films are annealed at 500 0C in air for two hours. The structural, morphological and optical properties of the films are ch…
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Purpose: The aim of this study was to prepare a compliant cellulose:chitosan hollow tube (with 6 mm in internal diameter), to be used as a coronary bypass graft, and to investigate its ability to covalently immobilize heparin onto its surface. Method: Cellulose and chitosan solutions were mixed in equal proportions, s…
ensinamentos.
Hyperbolic Metamaterials (HMMs) have recently garnered much attention because they possess the ability for broadband manipulation of the photon density of states and sub-wavelength light confinement. These exceptional properties arise due to the excitation of electromagnetic states with high momentum (high-k modes). H…
This chapter contains sections titled: Introduction Solution Growth of ZnO Nanowire Films Defects and Photoluminescence Properties of ZnO Role of Defect States in Electrical Conductivity of ZnO Defects and Electrical Conductivity of ZnO Nanowire Films ZnO Nanowires for Energy Conversion Devices
The high cost in the production of photovoltaic cells is still a problem for the solar energy usage as an electrical power source. In this context, the work studies the feasibility of using titanium dioxide as an electron acceptor in hybrid photovoltaic cells. In this study was used the polyfluorene (PFO) polymer as e…
Nanocrystalline diamond (NCD) particles are incorporated into diamond-like carbon (DLC) films in order to prevent NCD-DLC electrochemical corrosion. In the current paper, the thermal stability of these films was investigated. The NCD-DLC films were deposited on 316L stainless steel substrates using plasma enhanced che…
La connaissance des propriétés et du comportement d’un matériau en usinage est primordiale pour optimiser son utilisation et obtenir une usinabilité maximale. Dans ce but, l’étude de la modification de la ductilité par traitement thermiques sur plusieurs critères d’usinabilité tels que les efforts de coupe, la rugosit…
This chapter contains sections titled: Introduction Nanoremediation Using TiO2 Nanoparticles Gold Nanoparticles for Nanoremediation Zero-Valent Iron Nanoparticles Silicon Oxide Nanoparticles for Nanoremediation Other Materials for Nanoremediation Conclusion
This article has no abstract. Keywords: polarized infrared spectroscopy; raman spectroscopy of liquid crystals; orientational order parameters; nematics; Smectics; ferroelectric liquid crystals; discotics; biaxial nematic; antiferroelectric liquid crystals; proof of the origin of ferroelectricity in chiral liquid crys…
Simulated correction sequence showing parabolic axial figure profile before (top left) and after 3 stages of correction using a beam of FWHM = 14mm, 5.2 mm and 1.7 mm respectively. The dotted line gives the desired figure and the solid line gives the figure obtained at each stage. Overall, resolution improved from 7.8…