Materials Literature
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This article briefly summarizes the extensive information now available, from recent experiments and theoretical models, addressing the enhanced tensile ductility of nanocrystalline (NC) and ultrafine-grained (UFG) metals. Special attention is devoted to the key strategies and procedures developed to concurrently opti…
The growth of Au particles on Mo(001)-supported CaO films has been investigated as a function of film thickness by means of scanning tunneling microscopy and spectroscopy. Whereas, monolayer Au islands develop in the low-thickness regime [1--25 monolayers (ML)], formation of three-dimensional (3D) deposits is revealed…
In this study, the effect of organo-modified montmorillonite on mechanical and gas barrier properties of nanocomposite films of linear low-density polyethylene/low-density polyethylene blends was investigated. Two different compatibilizers, polyethylene grafted maleic anhydride and polypropylene grafted maleic anhydri…
The growth pattern of small Pt n ( n = 1–10) clusters has been investigated on the stoichiometric and partially reduced ceria (111) surfaces using density functional theory. On both surfaces, the metal packing was cubic-closed packed, and starting from metal clusters as small as Pt 10, the (111) facet of the metal clu…
The resistance to plastic flow in metals is often dominated by the presence of interfaces which interfere with dislocation nucleation and motion. Interfaces can be static such as grain and phase boundaries or dynamic such as new boundaries resulting from a phase transformation. The interface can be hard and fully impe…
Here we report the substitution effects of N-alkyl and N,N-dialkyl carboxamide groups on the fluorescence properties of polycyclic aromatic hydrocarbon chromophores, so as to control their fluorescence properties. The fluorescence properties of compounds obtained using solvents with different polarities showed very li…
Sulfolobus species have been developed as excellent model organisms to address fundamental questions of archaeal biology. Interesting patterns of natural variation among Sulfolobus islandicus strains have been identified through genome sequencing. Experimentally testing hypotheses about the biological causes and conse…
Abstract Graphene grown on the SiC surface is unique. Unlike graphene grown on the (0 0 0 1) surface, graphene grown on the surface has higher electron mobilities and an unusual non-Bernal stacking. Its different electronic properties are associated with its stacking and the graphene–SiC interface. In this paper we di…
A crystalline three-dimensional (3D) quaternary chalcohalide, Hg(7)InS(6)Cl(5) (1), has been synthesized through a solid-state reaction under medium temperature. It is the first example in the family of the Hg-IIIA-Q-X (Q = S, Se, Te; X = F, Cl, Br, I) systems. Compound 1 features a 3D network and has an optical band…
Nanocomposite films for covering applications were developed. Mechanical, radiometric and ultraviolet stability properties of the films were characterized. Nanocomposites were obtained by incorporating nanoadditives to a thermoplastic polymer matrix by melt-mixing in a corotating twin screw extruder. Three common poly…
In this work we present a systematic investigation of the thermoelectric properties of semiconductor alloys. Electronic properties (Fermi energy, Seebeck coefficient, and electrical resistivity) are calculated in both extrinsic and intrinsic regimes using the nearly-free-electron approximation and the Fermi-Dirac stat…
An accurate modelling hierarchy for mixed carbon nanotube (CNT) bundle interconnects is presented. Based on hierarchical modelling, different bundled structures are proposed for different arrangements of single-walled CNTs (SWCNTs) and multi-walled CNTs (MWCNTs). An equivalent model of mixed CNT bundles has been devel…
Abstract With the aim of developing a single-crystal graphene substrate indispensable to graphene's practical applications, we are investigating the structural and physical properties of graphene epitaxially grown on SiC by thermal decomposition. We grow monolayer and bilayer graphene uniformly on a micrometre scale o…
Gd(3+) ions, once bound to the monolayer of organic molecules coating the surface of gold nanoparticles, produce a paramagnetic relaxation enhancement (PRE) that broadens and eventually cancels the signals of the nuclear spins located nearby (within 1.6 nm distance). In the case of nanoparticles coated with mixed mono…
This study demonstrates a biological route to programming well-defined protein-inorganic interfaces with an arrayed geometry via modular peptide tag technology. To illustrate this concept, we designed a model multifunctional fusion protein, which simultaneously displays a maltose-binding protein (MBP), a green fluores…
Abstract The native oxide layer formed spontaneously on the surface of metallic Zn was investigated by in situ spectroscopic ellipsometry (SE) and ex situ X‐ray photoelectron spectroscopy (XPS). XPS analysis shows the coexistence of hydroxide and oxide in the oxide film. The growth kinetics of the oxide films in diffe…
The growth rates of α- and γ-glycine in basic and acidic aqueous glycine solutions were investigated systematically using in situ microscopic observations on single crystal seeds. The most unexpected observation was that inorganic bases (e.g., NaOH and KOH) and acids (e.g., H 2 SO 4 ) can significantly accelerate the…
A series of new photochromic fused-naphthopyrans with an alkyl bridge between the pyran ring and the naphthalenic core was synthesized in several steps from 4-(bromomethyl)benzocoumarin. The presence of the alkyl bridge in these new fused-naphthopyrans prevents the formation of one long-lived photoisomer and therefore…
Evaporative resistance is an important parameter to characterise clothing thermal comfort. However, previous work has focused mainly on either total static or dynamic evaporative resistance. There is a lack of investigation of localised clothing evaporative resistance. The objective of this study was to study localise…
Abstract This article presents an experimental study on the change in the properties of wood–plastic composites (WPCs) when reprocessed. The degree of properties degradation upon reprocessing, for recycling purpose, can be considered as a key factor to choose an alternative against discarding into the environment. A m…