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。
We have first time demonstrated the construction of a plasmonic gold dimer model for bioassays based on immune recognition with surface‐enhanced Raman scattering (SERS). To induce a strong plasmonic coupling effect, a dimer of gold nanoparticles (NPs) with a Raman label located between adjacent NPs is assembled throug…
We consider an ensemble of fully connected networks of N oscillators coupled harmonically with random springs and show, using random-matrix-theory considerations, that both the average phonon heat current and its variance are scale invariant and take universal values in the large N limit. These anomalous mesoscopic fl…
The influence of boron (B)-doping and remote plasma hydrogen passivation on the photoexcited charge carrier recombination in silicon nanocrystal/SiC multilayers was investigated in detail. The samples were prepared by high temperature annealing of amorphous (intrinsic and B-doped) Si1−xCx/SiC superlattices. The photol…
An organic material of a noncentrosymmetric l -threonine single crystal was grown in a dimethyl urea solution using the slow evaporation method. The grown crystal was transparent and colorless, with a size of about 20 × 7 × 4 mm 3 , obtained within a period of 10 days. The grown crystal was subjected to various studie…
The quantum conductance of armchair graphene nanopores (aGNPs) with edge impurities is investigated using the tight-binding model and non-equilibrium Green's function method. We find that aGNPs are particularly interesting since their transmission spectra can be easily tuned by pore-edge shaping to produce a variety o…
Community parameters of diatoms have been used as useful bioindicators for bioassessment of both lentic and lotic systems. The influence of enumeration time periods on detecting community parameters of periphytic diatom assemblages within different exposure times was studied using an artificial substratum in coastal w…
Replacement of Zircaloy claddings with SiC/SiC based fuel cladding is introduced as one of the most attractive options of ensuring ultra-high safety of LWRs. Further, the applications of SiC/SiC and C/SiC composite materials in many in-core components of light-water reactors (LWRs), generation IV reactors and fusion r…
The synthesis of Ge nanocrystals (Ge-nc) prepared by 74Ge+ implantation into fused silica followed by co-implantation of Si+ has been investigated for annealing temperatures varying between 850 and 1150 °C. By limiting the thermal diffusion of Ge, co-implanting Si reduces the Ge desorption and affects the growth of Ge…
The stem of Calotropis procera (Vern. Aak) is a source of natural cellulosic bast fibres wherein the commercially valuable properties like cellulose content, fiber strength and fiber elongation are found to be intermediate between that of cotton and linen. Other than high tensile and abrasive strength, fibers from C.…
By acoustically irradiating pristine, white, electrically insulating h- BN in aqueous environment we were able to invert its material properties. The resulting dark, electrically conductive h- BN (referred to as partially oxidized h- BN or PO- hBN ) shows a significant decrease in optical transmission (>60%) and ba…
This paper presents an overview of the applications of sensitized fluorescence in chemiluminescence. The enhancement of fluorescence of lanthanide ions after formation of stable complexes with organic molecules (type A luminescence) or of organic molecules after formation of stable complexes with inorganic ions (type…
We use time-resolved photoluminescence (PL) kinetics and PL intensity measurements to study the decay of photoexcitations in colloidal CdSe/ZnS nanocrystals grafted on SiO2−Si substrates with a wide range of the SiO2 spacer layer thicknesses. The salient features of experimental observations are found to be in…
Rigid and stable networks composed of litchi-shaped microspheres were formed via hierarchical self-assembly (SA) of oxide-based nanoparticles (NPs). The phenomenon of the apparent changes from NPs networks to microspheres networks after the gelation was similar to normal microsyneresis. However, in-situ composition ev…
By employing the ion mechanoemission technique, the fracture process of lap shear autoadhesive joints formed from the two identical samples of 2,6-dimethyl-1,4-phenylene oxide (PPO) at constant healing temperatures (T) lower than the PPO bulk glass transition temperature by 60–92 K has been investigated in high vacuum…
A finite-element method for static and free vibration analysis of axisymmetric circular nanoscale plates is presented based on the Gurtin-Murdoch continuum theory accounting for surface energy. Explicit solutions for stiffness and mass matrices and the load vector of a two-node plate finite element are derived by usin…
The rare earth Pr-doped Ca 1− x Pr x MnO 3 − δ (0 ⩽ x ⩽ 0.14) compound bulk samples are fabricated by citrate acid sol–gel combined with the ceramic preparation method. The effects of Pr doping on the structural and electrical transport properties of CaMnO 3− δ within the high-temperature region are investigated in de…
This work compares the behaviors of TiO 2 nanotube (TNTs) array obtained by anodization of Ti foils in an ethylene glycol/NH 4 F/water electrolyte with different applied voltages during a constant anodization time, and for the same electrolyte composition. The crystal structure and surface morphology of the annealed a…
The configuration of helical dicationic dyes 2 2+ with a dihydrodibenzoxepinone unit is stable, whereas the corresponding neutral electron donors 1 with a tetrahydrophenanthroxepinone skeleton easily undergo ring-flip.Thanks to their electrochemical bistability, electron exchange between 1 and 2 2+ is prohibited.Thus,…
Field emission properties of carbon nanotube (CNT) emitters dependent on electrode geometry have been systematically studied using two different types of diode electrode configurations. The experimental and simulation results clearly reveal that field emission properties, such as emission current and long-term emissio…
In designing chimney walls there are no place for cracks. Horizontal and vertical cracks can caused corrosion of concrete and steel bars. Cracks decreases stiffness of reinforced concrete chimney shell construction. Local and global imperfactions of chimney walls are increasing according to greater number of cracks. T…