Materials Literature
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The kinetics of the reaction of N2H4 with oxygen depends sensitively on the initial conditions used. In oxygen-rich systems, the rate constant shows a conventional positive temperature dependence, while in hydrazine-rich setups the dependence is negative in certain temperature ranges. In this study, a theoretical mode…
Abstract Exploring reactions of methanol on TiO2 surfaces is of great importance in both C1 chemistry and photocatalysis. Reported herein is a combined experimental and theoretical calculation study of methanol adsorption and reaction on a mineral anatase TiO2(001)‐(1×4) surface. The methanol‐to‐dimethyl ether (DME) r…
Pentablock copolymers PMA-PPO-PEO-PPO-PMA synthesized via atom transfer radical polymerization (ATRP) were self-assembled with varying amounts of γ-CDs to prepare poly(pseudorotaxanes) (PPRs). When the concentration of γ-CDs was lower, the central PEO segment served as a shell of the micelles and was preferentially be…
Inspection of corroded engineering components is vital for ensuring safety throughout the lifetime of infrastructure. However, full inspection can be infeasible due to time constraints, budgetary limits or restricted access. Subsequently there is growing interest in partial coverage inspection (PCI) techniques which u…
Flavonoids are a group of plant secondary metabolites including polyphenolic molecules, and they are well known for antioxidant, anti-allergic, anti-inflammatory and anti-viral propertied. In general, flavonoids are detected with various non-colorimetric detection methods such as column liquid chromatography, thin-lay…
For Co 2 Fe 6 B 2 –MgO based p-MTJ spin valves with [Co/Pt] n –SyAF layers ex situ annealed at 350 °C and 30 kOe for 30 min, the tunneling magneto-resistance (TMR) ratio strongly depended on the radio-frequency (RF) sputtering power in a 0.65–1.15 nm thick MgO tunneling barrier, achieving a TMR ratio of 168% at 300 W.
Abstract A series of novel biaryl ureas containing different structural patterns have been prepared in good yields in the presence of palladium nanoparticles (PdNPs) with narrow particle size distribution. In particular, α, β‐, and γ‐hydroxypropylated cyclodextrins were used as reductants/stabilizers under different P…
Abstract Controllable and sensitive perception of environmental changes is essential for the development of smart material and device systems. Herein, a multi‐stimuli sensitive responsor has been fabricated on the base of the established double‐helix core‐sheath graphene‐based microfibers (GFs). By combining the tunab…
Geranyl-CoA carboxylase (GCC) is essential for the growth of Pseudomonas organisms with geranic acid as the sole carbon source. GCC has the same domain organization and shares strong sequence conservation with the related biotin-dependent carboxylases 3-methylcrotonyl-CoA carboxylase (MCC) and propionyl-CoA carboxylas…
In the current work, pristine α-Fe2O3 metal oxide was doped with Mg in an attempt to modulate its electronic properties. To this end, we employed an experimental high throughput strategy, including scanning XRD and optical spectroscopy, which were complimented by atomistic density functional theory (DFT) calculations.…
The sequence structure of polymers plays an important role in determining their performance. However, existing polycarboxylates mostly have a broad molecular weight distribution and the sequence structure is randomly distributed. In this work, a novel water-soluble block copolymer made of poly(ethylene glycol) methyl…
An ultracompact and polarization-insensitive silicon-based strip-to-slot power splitter based on multimode interference is proposed, where an inverse-tapered subwavelength grating (SWG) structure is embedded in the center of the multimode waveguide and two strip-to-slot mode converters are integrated at the end. With…
nanotube scaffolds are self-generated, during which evolution phenomena such as segmented voids and solid bridges are observed, in agreement with the Kirkendall effect in a solid-phase crystallization system. The nanotube walls are made of intergrown single crystals rendering good mechanical stability. The inner diame…
Through employing capacitance-voltage (C-V) measurements, the stability of a-IGZO TFTs after applying negative bias stress in different ambient atmospheres was investigated. The hump phenomenon in C-V curve, different from that in the vacuum, was observed after applying negative bias stress in the air, which was conce…
The conversion of chloromethane to light olefins over SAPO-34 modified with metal chloride has been investigated. The results show that the acid and the ratio of the strong acid density to the weak acid density can be regulated through modification with different metal chlorides. SAPO-34 modified with metal chloride s…
As organic-based electro-optic (EO) modulators continually improve toward meeting the high performance required by new and developing photonic technologies, the challenge of compact and low loss packaging needs to be addressed.Because organic-based EO modulators and RF circuitry are traditionally built on different su…
In this paper, we present a new course entitled “Biomimicry: from life to nanotechnological innovations” at the Mines Nancy Engineering School, Nancy, France, and explain how we developed a specific curriculum covering biomimicry. We discuss strategies that can be followed by teachers to explain selected contents in t…
The conformation of a polymer chain in solution is coupled to the local structure of the surrounding solvent and can undergo large changes in response to variations in solvent density and temperature. The many-body effects of solvent on the structure of an n-mer polymer chain can be formally mapped to an exact n-body…
The Laser Induced Damage Threshold (LIDT) and material properties of various multi-layer amorphous dielectric optical coatings, including Nb2O5, Ta2O5, SiO2, TiO2, ZrO2, AlN, SiN, LiF and ZnSe, have been studied. The coatings were produced by ion assisted electron beam and thermal evaporation; and RF and DC magnetron…