Optique appliquée en Mécaniques
Conférence Invitée, CETIHL, INSA Lyon
Materials Literature
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Al3+ ACCEPTORS AND THE OPTICAL PROPERTIES OF Bi12SiO20:Cr+Al
Absorption measurement is taken in the visible spectral region (650 - 850 nm). The dopants Cr3+ and Al3+ ions occupy the tetrahedral sites in the crystal lattice of doped sillenite. The electron transitions in Cr3+ are presented in the case of Bi12SiO20:Cr and Bi12SiO20:Cr+Al. The total cross-section of combined chrom…
THERMAL RESISTANCE OF POLYETHYLENE TEREPHTHALATE FIBRES
The thermal resistance of isotropic and orientated poly(ethylene terephthalate) (PET) samples was studied. Part of the oriented PET specimens was heat mechanically modified under different conditions. Using differential thermal analysis (DTA), thermal gravimetric analysis (TGA) and differential thermal gravimetric ana…
CALCULATION OF THE EINSTEIN COEFFICIENTS FOR CO DOPED (80 − x)Sb2O3−20Na2O−xWO3 (x% mol of WO3) GLASSES
We have measured the absorption of the glasses (80−x)Sb2O3−20Na2O−xWO3 (x% mol of WO3) in the spectral regions 10 500 – 24 500 cm-1. The samples are doped with 0.05% mol of Co3O4 from x = 10% until x = 50%. The observed absorption band is due to the Co-impurity in the visible spectral region. This absorption band of g…
On a discrete-to-continuum convergence result for a two dimensional\n brittle material in the small displacement regime
We consider a two-dimensional atomic mass spring system and show that in the\nsmall displacement regime the corresponding discrete energies can be related to\na continuum Griffith energy functional in the sense of Gamma-convergence. We\nalso analyze the continuum problem for a rectangular bar under tensile boundary\nc…
Tuning of Epoxy Dielectrics through Interfacial Engineering via Multifunctional Co-fillers
International audience
An overview of the fatigue of polychloroprene rubber
International audience
Pointed Instants
This chapter provides an overview of Part 2 of the book, devoted to Maurice Blanchot (chapters 5-7), arguing that the separation between writing and life so categorically asserted by Blanchot is belied by the traces, residues and remnants of past time scattered throughout his narrative fictions. Focusing especially on…
High-Temperature Materials and Mechanisms: Applications and Challenges
An important tool in processing materials is to subject them to high temperatures and to use the resulting change in properties, which includes softening or melting, and changes in chemical and material phase. Thus, it is feasible to perform desired modifications in the material shape and characteristics. Other applic…
10.1063/1.4867265.1
Here, we report field emission (FE) properties of a chemical vapor deposited individual graphene investigated by in-situ transmission electron microscopy. Free-standing bilayer graphene is mounted on a cathode microprobe and FE processes are investigated varying the vacuum gap of cathode and anode. The threshold field…
Highly photoactive Er3+-TiO2 system by means of up-conversion and electronic cooperative mechanism
Heterogeneous photocatalysis technology is considered as a promising route to afford pollutant degradation as well as hydrogen production processes (Colón et al. 2007). Nowadays, the research activity in this field is focused in the development of novel alternative materials to traditional TiO2 capable to use of sunli…
Powder Diffraction Volume 28 / Supplement 2 / September 2013– ERRATUM
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Peering Inside Reactors
It’s tough to get a detailed account of what’s going on inside catalytic chemical reactors while those workhorse pieces of equipment are running. If researchers could peer inside and monitor—at a microscopic level and in real time—the chemical reactions under way, they would gather a treasure trove of useful informati…
Erratum: Leakage current measurements of a pixelated polycrystalline CVD diamond detector
This is an erratum for the article 2013 JINST 8 C01056
Photocatalytic inactivation of airborne microorganisms. Performance of different TiO2 coatings
The quality of indoor air has a fundamental importance for human health. Indoor air pollutants include, among others, biological contaminants present as bioaerosols. The latter are mostly composed of bacterial cells, fungal spores and bacterial spores (Stetzenbach et al., 2004). In particular, bacterial endospores are…
Single-Molecule Tracking of Polymer Surface Diffusion
The dynamics of polymers adsorbed to a solid surface are important in thin-film formation, adhesion phenomena, and biosensing applications, but they are still poorly understood. Here we present tracking data that follow the dynamics of isolated poly(ethylene glycol) chains adsorbed at a hydrophobic solid–liquid interf…
Screening and atomic-scale engineering of the potential at a topological insulator surface
(111),isinvestigatedby a scanning tunneling microscopy (STM) study of the distribution of Rb atoms adsorbed on the surface. Thepositively charged ions are screened by both free electrons residing in the topological surface state as well asband bending induced quantum well states of the conduction band, leading to a su…
Electronic and optical properties of GaSb:N from first principles
Microelectronics Research Center, The University of Texas at Austin, Austin, TX 78758(Dated: March 6, 2014)GaSb:N displays promise towards realization of optoelectronic devices accessing the mid-infraredwavelength regime. Theoretical and experimental results on its electronic and optical properties arehowever few. To…
Measurement of the Berry Phase in a Single Solid-State Spin Qubit
We present measurements of the Berry Phase in a single solid-state spin qubit associated with the nitrogen-vacancy center in diamond. Our results demonstrate the remarkable degree of coherent control achievable in the presence of a highly complex solid-state environment. We manipulate the spin qubit geometrically by c…
Ferroelectric and Photovoltaic Properties of Transition Metal doped Pb(Zr0.14Ti0.56Ni0.30)O3-delta Thin Films
We report nearly single phase Pb(Zr0.14Ti0.56Ni0.30)O3-delta(PZTNi30) ferroelectric having large remanent polarization (15-30 μC/cm2), 0.3-0.4 V open circuit voltage (VOC), reduced band gap (direct 3.4 eV, and indirect 2.9 eV), large ON and OFF photo current ratio, and the fast decay time. Reasonably good photo curren…