Materials Literature
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Understanding the composition dependence of glass hardness is of critical importance for both advanced glass applications and for revealing underlying fracture mechanisms. We present a topological approach for quantitative prediction of hardness in multicomponent glassy systems. We show that hardness is governed by th…
We report the development of a facile laser reduction method for the synthesis of laser converted graphene (LCG) from graphite oxide (GO). The method provides a solution processable synthesis of individual graphene sheets in water under ambient conditions without the use of any chemical reducing agent. We also report…
Poly(lactide) (PLA) is the most well known biodegradable and biocompatible material among the aliphatic polyesters nowadays explored for biomedical, pharmaceutical and environmental applications. Different poly(lactide)s are distinguished, namely stereoregular PLLA and PDLA, atactic, heterotactic, syndiotactic and ste…
Since their discovery in 1991 by the Japanese scientist “Sumio Iijima”, carbon nanotubes have been of great interest, both from a fundamental point of view and for future applications. Different types of carbon nanotubes can be produced in various ways. Economically feasible large-scale production and purification tec…
In this paper, an improved algorithm for extracting the effective constitutive parameters of a metamaterial is derived. The procedure invokes the Kramers–Kronig relations to ensure the uniqueness of the solution. The accuracy of the method is demonstrated by retrieving the effective material parameters of a homogeneou…
Plasmon-based photothermal therapy is one of the most intriguing applications of noble metal nanostructures. The photothermal conversion efficiency is an essential parameter in practically realizing this application. The effects of the plasmon resonance wavelength, particle volume, shell coating, and assembly on the p…
We have carried out neutron diffraction, muon spin relaxation ͑SR͒, and inelastic neutron scattering ͑INS͒ investigations on a polycrystalline sample of CeOs 2 Al 10 to investigate the nature of the phase transition observed near 29 K in the resistivity and heat capacity.Our SR data clearly reveal coherent frequency o…
Les composés amphiphiles, N-[Iodures de 3-(diméthylamino) propyl]-perfluoroalcanes amides (Fn-AH3-AmI) et Na,Nb-Bis [Iodures de 3-(diméthylamino) propyl]- perfluoroalcanes diamides (Fn(AH3-AmI)2) ont étéobtenus à partir des (di)esters et de la N,N’-diméthyl-3-propylamine puis parquaternisation par l’iodure de méthyle.…
Combining reactive magnetron sputtering with dip coating, Pt impregnated WO3 films for sensing H2 were produced. The microstructure, chemical composition and crystallographic phase of the films were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray Diffraction. The effects of he…
Glass-ceramics containing highly surface and bulk preferentially oriented fresnoite Sr2TiSi2O8 crystals have been synthesised by a simple isothermal heat treatment of suitable glasses compositions in the Sr-Ti-Si-K-B-O system. For all tested compositions, crystallisation starts from the free surfaces of the specimens…
peer reviewed
This work is part of a project that aims to develop piezoelectric glass-ceramics by controlled crystallisation of piezoelectric non ferroelectric fresnoite (Sr2TiSi2O8) crystals within a suitable glass composition. At this stage of the research the glass ceramics have been synthesised successfully. However, the differ…
The aim of this work is to produce macroporous ceramic materials with tailored porosity, using direct foaming method. The stabilization of the foams is ensured by adsorption of particles at the gas-liquid interface, following the methodology described by Gonzenbach et al. [ref. 1 to 4]. Foams are obtained from alumina…
In this research, the behavior of a parent glass powder of Sr2TiSi2O8 under selective laser remelting / devitrification is investigated. Powder compacts have been treated in order to characterize the response of the powder according to the laser scan conditions (power, spot speed and vectorization step of the scan lin…
In this research, the behavior of barium titanate powders under selective laser irradiation is investigated. The purpose is to determine suitable conditions to sinter the powders and form dense BaTiO3 thin components usable in hybrid circuits. Preliminary tests were performed on powders compacts in order to characteri…
The mechanical properties of titanium and its alpha-beta alloys make them ideal implant materials. Hydroxyapatite coating substantially contributes to the improvement of these implants. This survey presents certain patterns of the combined use of hydroxyapatite with titanium and titanium alloys in dental and orthopaed…
/ Une expérimentation en microcosme a été conduite afin de tester les effets de l'herbicide métolachlore sur les communautés naturelles de diatomées périphytiques de cours d'eau et pour y identifier de potentiels indicateurs de contamination utilisables ensuite pour la diagnose d'impacts toxiques des pesticides. La co…
In this study, antibacterial characteristic of silver/poly (lactic acid) nanocomposite (Ag/PLA-NC) films was investigated, while silver nanoparticles (Ag-NPs) were synthesized into biodegradable PLA via chemical reduction method in diphase solvent. Silver nitrate and sodium borohydride were respectively used as a silv…
We report a method to pattern monolayer graphene nanoconstriction field effect transistors (NCFETs) with critical dimensions below 10 nm. NCFET fabrication is enabled by the use of feedback controlled electromigration (FCE) to form a constriction in a gold etch mask that is first patterned using conventional lithograp…
We investigated the effect of magnetic nanoparticles of Fe(3)O(4) (Fe(3)O(4)-MNPs) on the mice immune system. Imprinting control region (ICR) mice were assigned randomly into four groups and treated with normal saline or low, medium, or high doses of Fe(3)O(4)-MNPs, respectively. After intravenous administration of Fe…