Materials Literature
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The high optical transmittance, electrical conductivity, flexibility and chemical stability of graphene have triggered great interest in its application as a transparent conducting electrode material and as a potential replacement for indium doped tin oxide. However, currently available large scale production methods…
We demonstrate the operation of a graphene-passivated on-chip porous silicon material as a high rate lithium ion battery anode with over 50x power density and 100x energy density improvement compared to identically prepared on-chip porous silicon supercapacitors. We demonstrate this Faradaic storage behavior to occur…
Linear theory of the parametric beam instability or the self-amplification of parametric x-ray radiation (PXR) from relativistic electrons in a crystal is considered taking into account finite emittance of the electron beam and absorption of the radiation. It is shown that these factors change essentially the estimati…
Graphene’s exceptional properties make it attractive for technological applications in many areas, including high-speed electronics. The establishment of processes for producing high quality, large-scale graphene is necessary for such applications. Large area growth of epitaxial graphene on the Si-face of hexagonal Si…
AbstrakMetal matrikkomposit (MMC) adalah material rekayasa, yang dibentukolehkombinasduaataulebih material tidaksejenisuntukmemperbaikisifatmekanisbahanmatriknya. Penelitianinibetujuanuntukmengetahuisifatmekanikkompositdenganpenguat SiO2terhadapvariasifraksimassa.Penelitianinibertujuanuntukmengetahuipengaruhpenambahan…
The second harmonic generation (SHG) produced from two-dimensional atomic crystals have been utilized recently in studying the grain boundaries and electronic structure of such ultra-thin materials. However, the SHG in many of these crystals, such as transition metal dichalcogenides (TMDCs), only occur in odd numbered…
Vertical and planar III-V nanowire growth on 2D van der Waals sheets by MOCVD will be presented, along with axial and radial p-n junction based solar cells.
A quantitative structure–property relationship (QSPR) study is carried out to develop correlations that relate the molecular structures of organic compounds (Aliphatic Alkanes) to their normal boiling point (NBP) and two correlations were proposed for constitutionals and connectivity indices Models. The correlations a…
In the present work, we are interested by studying the spectroscopic properties for optical applications, mainly laser amplification, of MF2 crystals, where M is an alkaline earth (Ba, Sr) or Cadmium (Cd) doped with rare earth ions (Tb3+, Er3+, Ho3+. So far, we present the absorption and emission properties and also t…
This paper describes a new technique, termed "metal-assisted exfoliation," for the scalable transfer of graphene from catalytic copper foils to flexible polymeric supports. The process is amenable to roll-to-roll manufacturing, and the copper substrate can be recycled. We then demonstrate the use of single-layer graph…
The main objective of this work is based on the synthesis and dielectric characterization of a new material in ceramic PZT with a perovskite structure ABO3. We are interested to study the Quaternary system (doping in site A and site B) of general formula: Pb0.96Ba0.02Ca0.02[(Zr0.52Ti0.48)0.94(Zn1/3Ta2/3)0.03(In1/3Sb2/…
We are study de mode fundamental de 1D in the two media (MIM and IMI) of a metallic structure (Ag) (silver) in which a small hole is perforated (as à dielectric medium). We take the conditions that resonant modes (PPSs) are confined or the surface.Via the complex permittivity of the metal and those of the dielectric m…
Two-dimensional (2D) materials has attracted intense interest in research in recent years. As compared to their bulk counterparts, these 2D materials have many unique properties due to their reduced dimensionality and symmetry. A key difference is the band structures, which lead to distinct electronic and photonic pro…
Recent developments in monolayer graphene production allow its use as the active layer in field-effect transistor technology. Favorable electrical characteristics of monolayer graphene include high mobility, operating frequency, and good stability. These characteristics are governed by such key transport physical phen…
Phase change memory (PCM), with its long history, may now hold its brightest promise to date. This bright future is being fueled by the "push" from big data. PCM is a non-volatile memory technology used to create solid-state random access memory devices that operate based the resistance properties of materials. Employ…
Sodium tetraborate (100 – x)(Na2B4O7.10H2O)– xV2O5, (x = 0 to 20 mole %) has been elaborated by splat cooling technique. Raman Measurements on the doped and non polish samples reveal the presence of the of α-NaVO3 crystal on the superficial layer. After polishing, Raman spectra characteristic of glasses are obtained w…
Owing to potential applications in catalysis, photochemistry, magnetism, ion exchange, biological chemistry and medicine, much effort has been dedicated to exploring polyoxometalate (POM) chemistry. In recent years, the design and assembly of hybrid inorganic–organic materials based on polyoxometalates has become an a…
According to research conducted in our research group on the pyridinedicarboxylate family due to their various applications in the fields of pharmaceuticals, non-linear optics, magnetism, electrical conductivity, catalyticactivity,etc, we decided tooxygenate nitrogen of pyridine ring of pyridine-2,5-dicarboxylic acid…
Le travail de recherche présenté dans le manuscrit a été accompli au sein de l'Institut Jean Lamour à Nancy dirigé par Mr Eric GAFFET, dans l'équipe 204 « Matériaux à propriétés thermoélectriques ».Je remercie vivement ce dernier de m'avoir accueilli dans le laboratoire.Je tiens à souligner ma gratitude envers Mme Mar…
The highly anisotropic and qualitatively different nature of in- and out-of-plane charge dynamics in high-Tc cuprates cannot be accommodated within the conventional Boltzmann transport theory. The variation of in- and out-of-plane resistivities with temperature and hole content are also anomalous and cannot be explain…