Materials Literature
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Herein a genetic algorithm for optimising the design of layered 2D heterostructure is proposed. As a proof-of-concept it is applied to Sb$_2$Te$_3$-GeTe phase-change material superlattices, and the resulting lowest energy structure is grown experimentally. The similarity of the computational and experimental structure…
We developed a method of precise isotope labeling to visualize the continuous growth of graphene by chemical vapor deposition (CVD). This method allows us to see in real time the growth of graphene monocrystals at a resolution of a few seconds. This technique is used to extract the anisotropic growth rates, the format…
The interfacial Dzyaloshinskii-Moriya Interaction can modify the topology of droplets excited by a localized spin-polarized current. Here, we show that, in addition to the stationary droplet excitations with skyrmion number either one (topological) or zero (non-topological), there exists, for a fixed current, an excit…
In this study, the optoelectronic properties of a monolithically integrated series-connected tandem solar cell are simulated. Following the large success of hybrid organic-inorganic perovskites, which have recently demonstrated large efficiencies with low production costs, we examine the possibility of using the same…
Nanoscale glass milling with mild thermal annealing is proposed and shown to occur within a tri-material composite W profile optical fibre.
Nature uses orthogonal interactions over different length scales to construct structures with hierarchical levels of order and provides an important source of inspiration for the creation of synthetic functional materials. Here, we report the programmed assembly of monodisperse cylindrical block comicelle building blo…
Boron-doped diamond (BDD) is a prospective electrode material that possesses many exceptional properties including wide potential window, low noise, low and stable background current, chemical and mechanical stability, good biocompatibility, and last but not least exceptional resistance to passivation. These character…
We review our recent experimental results on the electronic nematic phase in electron- and hole-doped BaFe 2 As 2 and FeSe. The nematic susceptibility is extracted from shear-modulus data (obtained using a three-point-bending method in a capacitance dilatometer) using Landau theory and is compared to the nematic susce…
Bimetallic nanoparticles display unique optical and catalytic properties that depend on crystallite size and shape, composition, and overall architecture. They may serve as multifunctional platforms as well. Unfortunately, many routes toward shape and architecturally controlled bimetallic nanocrystals yield polydisper…
Homoleptic mononuclear nine-coordinate lanthanum(III) and europium(III) tris-complexes [Ln(N(∧)N(∧)O)3]·nH2O with two tridentate N-benzylbenzimidazole pyridine-2-carboxylates exhibit a rare C3-symmetry of the lanthanide coordination polyhedron in the solid state, as confirmed by luminescence spectroscopy and by X-ray…
In the search for induced chiral plasmonic activity, cholesteric films formed by cellulose nanocrystals have attracted great interest as potential hosts for plasmonic nanoparticles. Circular dichroism (CD) spectra of the composite films exhibit two peaks, one of which is ascribed to the cholesteric host and the other…
One-dimensional (1D) carbon nanotubes (CNTs) and 2D single-atomic layer graphene have superior thermal, electrical, and mechanical properties. However, these nanomaterials exhibit poor out-of-plane properties due to the weak van der Waals interaction in the transverse direction between graphitic layers. Recent theoret…
This work demonstrates superhydrophobic behavior on nanosecond laser patterned copper and brass surfaces. Compared with ultrafast laser systems previously used for such texturing, infrared nanosecond fiber lasers offer a lower cost and more robust system combined with potentially much higher processing rates. The wett…
Gels made from soft microscale particles smoothly transition between the fluid and solid states, making them an ideal medium in which to create macroscopic structures with microscopic precision. While tracing out spatial paths with an injection tip, the granular gel fluidizes at the point of injection and then rapidly…
Silver nanoparticles (NPs) have been the subjects of researchers because of their unique properties (e.g., size and shape depending optical, antimicrobial, and electrical properties). A variety of preparation techniques have been reported for the synthesis of silver NPs; notable examples include, laser ablation, gamma…
ONETM to simulate solute transport through a lake. The model shows the development of a secondary plume due to flow of contaminant through the lake. This model reproduces an example from the documentation of the Lake Package (Merritt and Konikow, in press). Reston,Virginia
List specific addresses of properties to be assessed, known or suspected site activities, and briefly summarize results of any previous site investigation or cleanup activities.
L'utilisation de fluides au comportement rhéologique complexe (seuil d'écoulement, thixotropie) est de plus en plus courante dans notre quotidien. Une description globale du comportement n'est pas suffisante et c'est pourquoi ce travail se focalise sur la détermination locale des propriétés de ces matériaux complexes.…
Rôle de l'hydrogène dans la corrosion des alliages base Nickel en milieu primaire des REP : Etude cinétique des mécanismes d'absorption et de piégeage Dans les réacteurs nucléaires à eau pressurisée (REP) encore en service dans le parc nucléaire civil français, certaines pièces en contact avec le milieu du circuit pri…
Les matériaux tétraédrites de formule chimique [(Cu,Ag)10(Zn,Fe)2(Sb,As)4S13] sont des roches naturelles particulièrement abondantes sur Terre appartenant à la famille des sels sulfurés. Longtemps étudiées du point de vue structural et pour leur composition, ce n’est que récemment qu’ils ont suscité un intérêt pour la…