Materials Literature
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We extend an approximation earlier developed by us for the single-impurity Anderson model to a full-size impurity solver for models of interacting electrons with multiple orbitals. The approximation is based on parquet equations simplified by separating small and large energy fluctuations justified in the critical reg…
We use a Monte Carlo approach to simulate the influence of the dipolar interaction on assemblies of monodisperse superparamagnetic $γ-Fe_{2}O_{3}$ nanoparticles. We have identified a critical concentration c*, that marks the transition between two different regimes in the evolution of the blocking temperature ($T_{B}$…
The presence of interface states at the MOS interface is a well-known cause of device degradation. This is particularly true for ultra-scaled FinFET geometries where the presence of a few traps can strongly influence device behavior. Typical methods for interface trap density (Dit) measurements are not performed on ul…
BaYF5:Yb3+, Er3+, Tm3+ nanocrystals have been successfully synthesized via a hydrothermal process. SEM and TEM images indicate that the size of the nanocrystals is about 20 nm. Under the excitation of a 980 nm single-wavelength diode laser, BaYF5:Er3+ nanocrystals give strong green upconversion (UC) emission centered…
Co-assembly of two types of nanocrystals (NCs) into binary NC superlattices (BNSLs) provides a solution-based, inexpensive way to create novel metamaterials with rationally designed properties. The fundamental challenge is to probe and understand the nature and extent of complex interparticle interactions present in B…
Aniline molecules were grafted onto multiwalled carbon nanotubes (MWCNTs) by using a plasma-induced grafting technique. The polyaniline (PANI) grafted MWCNTs (PANI/MWCNTs) were characterized by using ultraviolet−visible spectrophotometry, X-ray photoelectron spectroscopy, Raman spectroscopy, thermogravimetric analysis…
In situ X-ray photoelectron spectroscopy (XPS) was utilized to identify the chemical state of silver in a range of silver oxide thin films obtained by codeposition of silver and atomic oxygen. A highly oxidized silver species was observed at an unexpectedly low Ag 3d 5/2 binding energy (BE) of 366.8 eV with an associa…
The development of elegant synthetic methodologies for the preparation of monocomponent nanocrystalline particles has opened many possibilities for the preparation of heterostructured semiconductor nanostructures. Each of the integrated nanodomains is characterized by its individual physical properties, surface chemis…
Using micro-Raman spectroscopy and scanning tunneling microscopy, we study the relationship between structural distortion and electrical hole doping of graphene on a silicon dioxide substrate. The observed upshift of the Raman G band represents charge doping and not compressive strain. Two independent factors control…
Graphene in its pristine form is one of the strongest materials tested, but defects influence its strength. Using atomistic calculations, we find that, counter to standard reasoning, graphene sheets with large-angle tilt boundaries that have a high density of defects are as strong as the pristine material and, unexpec…
The kinetics and mechanisms of nanoparticulate amorphous calcium carbonate (ACC) crystallization to calcite, via vaterite, were studied at a range of environmentally relevant temperatures (7.5-25 °C) using synchrotron-based in situ time-resolved Energy Dispersive X-ray Diffraction (ED-XRD) in conjunction with high-res…
The Protein Data Bank (PDB) is the world-wide repository of macromolecular structure information. We present a series of databases that run parallel to the PDB. Each database holds one entry, if possible, for each PDB entry. DSSP holds the secondary structure of the proteins. PDBREPORT holds reports on the structure q…
The 23rd Microelectronics Workshop (MEWS23) (Nobember 10-11, 2010. Tsukuba International Congress Center), Tsukuba, Ibaraki, Japan
The 23rd Microelectronics Workshop (MEWS23) (Nobember 10-11, 2010. Tsukuba International Congress Center), Tsukuba, Ibaraki, Japan
The 23rd Microelectronics Workshop (MEWS23) (Nobember 10-11, 2010. Tsukuba International Congress Center), Tsukuba, Ibaraki, Japan
The 23rd Microelectronics Workshop (MEWS23) (Nobember 10-11, 2010. Tsukuba International Congress Center), Tsukuba, Ibaraki, Japan
Les matériaux textiles occupent une place importante dans notre quotidien. Les recherches actuelles s'orientent vers l'élaboration de matériaux à nouvelles propriétés techniques. Parmi les voies d'obtention, on peut citer le greffage de microcapsules ou de molécules cages rechargeables contenant un principe actif qui…
Le défis principal de l'industrie de la micro électronique est de créer d'augmenter la capacité de stockage mais aussi la vitesse des ordinateurs. Pour atteindre cette objectif, les composants électroniques doivent être miniaturisés à l'échelle du nanomètre. À cette échelle, les propriétés de la matière sont encore ma…
Les biofilms sont des communautés de microorganismes emprisonnés dans une matrice de polymères organiques extracellulaires (EPS) permettant de stabiliser ces édifices tridimensionnels. La cohésion des EPS polyanioniques dans un environnement hydraté est assurée par des microdomaines hydrophobes. La localisation de ces…
Cette étude est consacrée à l'analyse des propriétés électrostatiques et structurales des protéines diffractant à haute résolution. Les travaux se déclinent en deux aspects principaux qui sont, d'une part, l'analyse d'un point de vue fondamental des propriétés dérivées de leur distribution de charge des structures des…