Materials Literature
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Herein, a pH stimuli-responsive vehicle for intracellular drug delivery using CeO2 capped mesoporous silica nanoparticles (MSN) is reported. β-Cyclodextrin-modified CeO2 nanoparticles could cap onto ferrocene-functionalized mesoporous silica through host-guest interactions. After internalization into A549 cells by a l…
As a promising candidate for optoelectronics, one-dimensional CdS nanostructures have drawn great scientific and technical interest due to their interesting fundamental properties and possibilities of utilization in novel promising optoelectronical devices with augmented performance and functionalities. This progress…
Developments in semiconductor technology are propelling the dimensions of devices down to 10 nm, but facing great challenges in manufacture at the sub-10 nm scale. Nanotechnology can fabricate nanoribbons from two-dimensional atomic crystals, such as graphene, with widths below the 10 nm threshold, but their geometrie…
Abstract Understanding the electron and phonon transport characteristics is crucial for designing and developing high performance thermoelectric materials. Weak scattering effects on charge carriers, characterized by deformation potential and alloy scattering potential, are favorable for thermoelectric solid solutions…
Silicene, a two-dimensional hexagonal lattice of silicon, has been synthesized recently and exhibits fascinating electronic properties that resemble graphene. The substrate effect on the electronic properties of silicene is important for the practical applications of silicene. First-principles calculations were perfor…
When nanoparticles (NPs) enter a biological fluid (e.g., human plasma (HP)), proteins and other biomolecules adsorb on the surface leading to formation of a rich protein shell, referred to as "protein corona". This corona is dynamic in nature and its composition varies over time due to continuous protein association a…
Abstract Electron and phonon transport characteristics determines the potential of thermoelectric materials for power generation or refrigeration. This work shows that, different from most of high performance thermoelectric materials with dominant acoustic phonon scattering, the promising ZrNiSn based half‐Heusler the…
We report a procedure to prepare highly monodisperse copper telluride nanocubes, nanoplates, and nanorods. The procedure is based on the reaction of a copper salt with trioctylphosphine telluride in the presence of lithium bis(trimethylsilyl)amide and oleylamine. CuTe nanocrystals display a strong near-infrared optica…
The chemical stability of graphene and other free-standing two-dimensional crystals means that they can be stacked in different combinations to produce a new class of functional materials, designed for specific device applications. Here we report resonant tunnelling of Dirac fermions through a boron nitride barrier, a…
The Raman scattering of single- and few-layered WS 2 is studied as a function of the number of S-W-S layers and the excitation wavelength in the visible range (488, 514 and 647 nm). For the three excitation wavelengths used in this study, the frequency of the A 1g (Γ) phonon mode monotonically decreases with the numbe…
Phosphazenes remain an intriguing chemical system due to the unique incorporation of phosphorus and nitrogen into other organic and inorganic molecules. Typically, phosphazenes serve as scaffolds to which a variety of other molecular structures can be appended. Since phosphorus is pentavalent in phosphazene structures…
Abstract Nanoparticles (NP) have specific catalytic properties, which are influenced by parameters like their size, shape, or composition. Bimetallic NPs, composed of two metal elements can show an improved catalytic activity compared to the monometallic NPs. We, herein, report on the selective aerobic oxidation of be…
FlgG is a bacterial flagellar rod protein and constructs the distal rod connecting to the hook. FlgG of Salmonella enterica serovar Typhimurium is a 260-amino-acid protein composed of a folded core region and N- and C-terminal regions that are unfolded in solution. A core fragment of FlgG (FlgG47-227) was expressed, p…
To examine the effects of the inherent heterogeneity in graphitic hexagonal pores on Kr adsorption in the monolayer (ML) regime, we measured the powder X-ray diffraction (XRD) patterns of Kr adsorbed on the walls of the graphitic hexagonal pores, as well as the flat surfaces of graphitized carbon black, as a function…
S i 3 N 4 – S i C composite ceramics used for volumetric receivers were fabricated by pressureless sintering of micrometer S i C , S i 3 N 4 , andalusite, and other minor additions powders. Mechanical, thermal expansion, thermal conductivity, and thermal shock resistance properties were tested at different sintering t…
In this paper, micrometers long and 20–100 nm diameter SiC nanowires had been synthesized in the short cut fiber toughened SiC composites (Csf/SiC) by annealing treatment. The present work demonstrated that it was possible to fabricate the in situ SiC nanowires toughened Csf/SiC composites by annealed treatment. The “…
Aluminum oxynitride spinel ( AlON ) powders were synthesized by aluminothermic reaction in a reducing N 2 ‐ CO atmosphere. Low cost and easily available aluminum and γ‐ Al 2 O 3 alumina micrometer‐sized powders were employed as starting materials. Mixed powders consisting of 75 wt% Al and 25 wt% Al 2 O 3 were milled t…
To explore the feasibility of constructing a functional biomaterial complex with regenerated silk fibroin membrane and immortalized chondrocytes in vivo. Rat auricular chondrocytes (RACs) were transfected with the lentivirus vector pGC-FU-hTERT-3FLAG or pGC-FU-GFP-3FLAG, encoding the human telomerase reverse transcrip…
The effects of graphene oxide (GO) on the yield stress‐pH of α‐Al 2 O 3 (alumina) suspensions were investigated. For micron‐sized platelet alumina suspensions, micron‐sized GO additive increased the maximum yield stress by as much as six‐folds. This was attributed to GO‐mediated bridging interactions between the plate…
Moderne Weltwunder: Nanostrukturierte Filme aus plasmonischen Pyramiden-Arrays (siehe Bild) wurden durch einfaches Aufstempeln von vorgefertigten homogenen Nanokolloiden erzeugt. Die Materialien wirken als effiziente optische Verstärker und können für die Konstruktion quantitativer, billiger, tragbarer, ultraempfindli…