Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Weltraumtaugliche Schmiermittel: Graphen und Graphenoxid (r-GO) können das Tieftemperaturverhalten hypergolischer ionischer Flüssigkeiten drastisch verbessern, indem sie deren Viskosität reduzieren. Entscheidend dabei ist, dass die Art des Graphens auf die spezifische Funktionalität der IL abgestimmt wird.
Abstract A glassy carbon electrode (GCE) was covalently modified by 4‐phosphatephenyl (4‐PP). Sensing paracetamol (PCT) via linear sweep voltammetry in sulfuric buffer solution of pH 1.02 at 36.8 °C, the 4‐PP‐modified GCE showed high electrochemical sensitivity and long reusability. PCT‐loaded poly(vinyl alcohol) (PVA…
This letter reports the use of programmed optical states in a vanadium dioxide (VO2) thin film for the projection of near infrared (NIR) images. The optical states are programmed by photothermal actuation from scanning a focused red laser on localized regions of the VO2thin film. The abrupt change in transmissivity of…
The net heat of combustion is one of the most important properties of flammable substances that can be used to estimate the potential fire hazards of chemicals once they ignite and burn. This study proposed a quantitative structure–property relationship model to predict the net heat of combustion of 308 organosilicon…
Poor solubility of the semiconductor quantum dots (QDs) severely restricts studies on these substances in room temperature ionic liquids (ILs). It also limits applications, which require both these promising classes of materials. In this work, a simple method employing a task-specific thiol-capped imidazolium ionic li…
We report first principles studies of zigzag edged graphene nanoribbons (ZGNR) with one edge partially covered by topological defects. With increasing coverage of an edge by pentagons and heptagons, which are two of the simplest topological defects possible in a graphenic lattice, ZGNRs evolve from a magnetic semicond…
On the Possibility of Layered Crystals Application for Solid State Hydrogen Storages - InSe and GaSe Crystals
This study describes a simple mathematical model for one-dimensional elastoplastic wave propagation in a metal in the regime where the applied stress greatly exceeds the yield stress. Attention is focused on the increasing ductility that occurs in the over-driven limit when the plastic wave speed approaches the elasti…
In nuclear fusion devices, infrared (IR) imaging diagnostics have been widely used for the temperature measurement of in-vessel surfaces. For the diagnostics, variations of the optical emittance and reflectance of wall materials will be an essential issue to measure the temperature correctly. In this study, variations…
The rate- and temperature-dependent plastic flow in a material containing two types of thermally activatable obstacles to dislocation motion is studied both numerically and theoretically in a regime of relative obstacle densities for which the zero-temperature stress is additive. The numerical methods consider the low…
We investigate two high frequency Raman overtone and combination modes of graphene named 2D' and 2D + G bands, and located at ~3240 and ~ 4260 cm –1 , respectively. The graphene thickness and stacking geometry effects for these two modes are systematically studied. The features of the 2D' band, which arises from intra…
Using first-principles electronic structure calculations, we studied the relative stability between hexagonal wurtzite (WZ) and cubic zinc-blende (ZB) structures and the electronic properties of the CdS nanocrystals of varying shape and surface composition. Our study shows substantial enhancement of the stability of t…
The effects of electron beam irradiation dose (50–150 kGy) and the concentration of montmorillonite (MMT) clay (3–10 parts per hundred part of rubber (phr)) on the properties of acrylonitrile butadiene rubber (NBR) have been investigated. The dispersion of the layered silicates was assessed by x-ray diffraction and tr…
The anomalous mesoscopic transport in supercooled liquids was investigated using three-dimensional molecular dynamics simulation. We show that the dynamic correlation length, ξ, can be identified as a crossover length between the microscopic and macroscopic transports. We also find that in highly supercooled states, w…
The present investigation has studied the impact of Nb surface segregation on charge carrier separation in polycrystalline Nb-doped (0.65 at % Nb) TiO 2 . By use of secondary ion mass spectrometry, the effect of applied processing conditions (temperature and oxygen activity) on the segregation of Nb has been obtained…
Peptides can assemble to supramolecular structures, of which fibers are of special biochemical and medical relevance. We employed Raman and infrared spectroscopy to elucidate the chemical integrity of fibers built from peptides and peptide derivates that contain the aromatic side groups fluorenyl and phenyl. Because t…
In this research, we mainly focused on the micro-emulsion synthesis of biotinylated ZnS (zinc sulfide) nanocrystals for avidin recognition. Various samples of Zn(1-x)Mn(x) S, with x = 0.0001, 0.007, 0.02, 0.03, 0.055, 0.09 and 0.13, prepared by quaternary W/O (water-in-oil) microemulsion system. Cyclohexane was used a…
Here we describe scattering based signal suppression artifacts encountered while developing multiplex lateral flow (LF) immunoassay using surface enhanced Raman spectroscopy (SERS) "nanotags" as analyte labels. Using these SERS nanotags, we have produced a quantitative test for inflammation biomarkers that is transfer…
We report a combined synchrotron X-ray and neutron diffraction study on as-grown La(2)CoO(4.14) single-crystal from 10 to 470 K. Unprecedented structural features in terms of a (3 + 2)D incommensurate modulation have been detected and characterized in the Low Temperature Orthorhombic (LTO) phase already at room temper…
The motion of a droplet can be induced by periodically compressing and extending it between two similar gradient surfaces possessing significant wetting hysteresis. The shape fluctuation of the drop during repeated compression-extension cycles leads to its ratchetlike motion toward the region of higher wettability. A…