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。
Gold nano particles (GNPs) concentration dependence of the energy transfer occurs between the fluorophores and GNPs is investigated. In the case of theses pairs, GNPs can enhance or quench the fluorescence of fluorophores depending upon the relative magnitudes of two energy transfer mechanisms: i) the plasmonic field…
RESUMO A soldagem a arco submerso é um processo de fabricação bastante utilizado na indústria naval, a qual apresentou um crescimento significativo nos últimos anos no país. Este trabalho apresenta um estudo detalhado da interação química que ocorre entre o metal de base, o metal de adição e o fluxo de soldagem em um…
To improve the efficiency of the multimode hybrid energy storage system (HESS), a novel adaptive mode control strategy (ADCS) based on logic threshold and hysteresis control strategy is proposed. The operating modes of the multimode HESS are first analyzed. Then, the adaptive target voltage of the ultracapacitor and t…
CuGa1-×Sn×O2 (0 ≤ × ≤ 0.1427) samples were synthesized by convenient hydrothermal method. The crystal structure and optical properties were also investigated. Results revealed that the CuGa1-×Sn×O2 samples are delafossite oxides with a rhombohedral (space group R-3m) structure; the XPS spectra confirmed that the valen…
The effect of small copper additions (to ∼6 at %) on the distribution of iron ions in six crystallographic sites of the unit cell of the main magnetic phase (PrDy)2(FeCo)14B has been detected. An increase in the copper concentration leads to a decrease in the 8j 1 site occupation by iron ions. Independently of the pre…
The effect of the insulating-matrix material on the electronic and magnetic properties of nanocomposites is investigated in the Ni x (Al2O3)100–x metal–insulator system and the Ni x (Nb2O5)100–x metal–semiconductor system. It is established that the characteristics of composites determined by electron transport throug…
A method of surface curvature of carbon nanotubes has been proposed for quantitative estimation of the longitudinal conductivity of nanotubes. A dispersion relation for the electron spectrum of single-walled carbon nanotubes has been obtained analytically. The change in the zone structure of nanotubes of various types…
In this work, tungsten trioxide (WO3) film was prepared on FTO-coated glass substrates using a facile hydrothermal method. Detailed studies revealed that a variety of WO3 nanostructures-including nanosheets, nanoflakes, nanocuboids and 3D nanowire flowers could be obtained by tuning the composition of the precursor so…
본 연구에서는 윤활유 제조기술에 관한 국내외 특허 활동 분석을 통하여 윤활유 제조산업에서의 한국의 기술 경쟁력 분석 및 향후 대응 전략을 제시한다. 이를 위하여 본 연구에서는 한국을 비롯하여 미국, 일본 및 유럽연합 등 윤활유 제조산업에서의 주요 선진국들의 9가지 주요 윤활유 제조기술에 관한 최근 특허 동향을 통계적으로 분석한다. 또한 특허 수, 특허 인용수, 시장확보지수, 특허영향지수, 기술력지수 등 주요 특허 활동 평가 지표 분석을 통하여 한국의 윤활유 제조산업에서의 기술력, 경쟁력 등을 정량적으로 평가한다. 주요 결과로 한국은 뒤늦은 기술개발 등으로 윤활유 제…
Powerful forces arise when a pulse of a magnetic field in the order of a few tesla diffuses into a conductor. Such pulses are used in electromagnetic forming, impact welding of dissimilar materials and grain refinement of solidifying alloys. Strong magnetic field pulses are generated by the discharge current of a capa…
Abstract Hydrogels are a unique class of macromolecular networks that can hold a large fraction of an aqueous solvent within their structure. They are suitable for biomedical area including controlled drug delivery and for technical applications as self-adhesive materials for bonding of wet surfaces. This paper descri…
Piezoelectricity is closely related with the performance and application of piezoelectric devices. It is a crucial issue to understand its detailed fundamental for designing functional devices with more peculiar performances. Basing on the first principles simulations, the ZnO piezoelectric tunnel junction is taken as…
Branched ZnO nanowires have been fabricated on p type Si nanowires by electrodeposition and formed a Si nanowires and ZnO nanowires branched core-shell structure. In these deposition process, Si nanowires could be used as the work electrode for ZnO directly depositing. The morphologies and growth region of ZnO could b…
The paper describes effective quality assessment of spent nuclear fuel storage cask. The ultrasonic testing method is considered. The classification of possible defects with corresponding dimensions limits is proposed. The database of defects of the spent nuclear fuel storage cask was created in compliance with the nu…
Abstract The coordination polymers {[Zn3(bcp)2(bip)(OH)2]·2H2O}n (1) and {[Cd(bcp)(bpa)]·2H2O}n (2) [H2bcp = 1,3‐bis(4‐carboxy‐phenoxy) propane, bmp = 1,4‐bis(2‐methylimidazol‐3‐ium‐1‐yl) biphenyl, and bpa = bis(4‐pyridyl) amine] based on the flexible carboxylate and N‐donor ligands were synthesized and characterized.…
This chapter reviews several theoretical models that are used to compute the stress fields inside the electrode particles of lithium-ion batteries during discharging/charging process and provides a guideline for researchers to choose the appropriate models. Due to the limitation of the existing models, a general elect…
Summary Fluorescent gelators containing stilbene segments were synthesized, and their gelation abilities were studied. Fibrous xerogel films were prepared from the gels on quartz plates, and their abilities to detect explosives were evaluated by the fluorescence quenching of the xerogel films upon exposure to saturate…
GaN nanorods are successfully fabricated by adjusting the flow rate ratio of hydrogen (H 2 )/nitrogen (N 2 ) and growth temperature of the selective area growth (SAG) method with metal organic chemical vapor deposition (MOCVD). The SAG template is obtained by nanospherical-lens photolithography. It is found that incre…
The non-linear stability analysis of composite cylindrical panel subjected to concentrated in-plane mechanical and localized thermal loadings are reported here. The buckling of composite panel subjected to concentrated in-plane mechanical loading/ localized thermal loading is solved in two steps as the prebuckling str…
Abstract In the wake of an increasing number of flights in sandy conditions, the solid particle erosion of aircraft turbine components has become a critical issue. Since the Second World War, this type of wear has been investigated aiming at identifying measures to improve the life time and performance of aircraft tur…