Materials Literature
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Prospects for using upconversion nanoparticles as markers for tumor optical imaging are discussed. Using a model of epidermoid Lewis lung carcinoma engrafted in mice, luminescent signals from nanoparticles delivered into the tumor tissue are registered in vivo.
Formation of supramolecular polysiloxane polymers was studied by using oligoamide strands 1a , 2a , and 3a bearing multiple hydrogen bonds as association units. According to SEM and TEM studies one polymeric strand associated into supramolecular spherical assemblies via duplex formation. The results demonstrated the e…
One-dimensional BaAl12O19:Mn2+ nanofibers were fabricated by electrostatic spinning method. The effects of some factors on the product preparation were investigated, such as the pH value of precursors; the proportion of citric acid; calcination temperatures, and then the optimal synthetic conditions was obtained. The…
Uranium nitride and mix uranium nitride (U-Pu)N is most popular nuclear fuel for Russian Fast Breeder Reactor. The works in hot cells associated with the radiation exposure of personnel and methodological difficulties. To know the main physical-chemical properties of uranium-plutonium nitride it necessary research to…
The aim of this contribution is to assess the capabilities of a quasi-3D hybrid analytical model for the estimation of iron loss in axial flux permanent magnets machines. The hybrid analytical modelling (HAM) approach is based on a direct coupling of analytical solution of Maxwell's equations with reluctance networks…
Activation of the process of amorphous-silicon-nanocluster formation in a hydrogenated amorphous- silicon suboxide matrix with time-modulated dc discharge plasma is investigated. The plasma is modulated by repeatedly switching on and off a dc magnetron magnetic coil. It is demonstrated that the resulting self-inductio…
Solid solutions Bi3Nb1–y W y O7 ± δ, Bi3Nb1–y V y O7 ± δ, Bi3Nb1–y Fe y O7 ± δ (y = 0.1–0.5; Δy = 0.1), and Bi3–x Y x Nb1–y W y O7 ± δ (x = 0.05, 0.1; y = 0–0.3; Δy = 0.1) have been studied. The homogeneity ranges of the solid solutions and crystal-chemical parameters have been determined by means of X-ray powder diff…
Abstract Extra-cardiac arteriovenous malformations are rare causes of severe cardiac failure in the neonatal period. Aneurysmal malformation of the vein of Galen may lead to a diagnostic confusion because the presenting signs point to a cardiac cause of failure. Endovascular therapy is found to be an effective and saf…
Interaction between the structural and magnetic subsystems of a crystal has been studied near phase transition lines. The consideration has been performed in terms of the Landau phenomenological theory. It has been shown that severe plastic deformation by torsion leads to a forced formation of a heterogeneous distribu…
Two commercially-available thermally-enhanced polyamide 66 (PA66) polymer composite materials having thermal conductivities of 20 to 30 W/m.K, sourced from two different vendors, are experimentally characterized in terms of thermal performance and mechanical properties. The heat transfer rates of prototype air-water h…
This paper presents the results of finite element modeling and analysis of a dynamically loaded array of individually addressable vertical ZnO nanowires (piezo-pixels) encapsulated in a polymer, which is intended to function as a pressure sensor having the purpose of identification of fingerprints with very high spati…
정확한 점탄성 재료의 히스테리시스 모델은 에너지 손실을 정량화 하는데 매우 중요하다. 우리는 본 논문에서 대변형 상태의 탄성체에 대한 비선형 초-점탄성 지배방정식 모델을 제시하고자 한다. 본 연구는 Hoofatt의 모델에서 Neo-Hookean 초탄성 모델 대신 Yeoh 초탄성 모델로 지배 방정식을 유도하여 탄성체의 점탄성 거동을 모델링하였다. 또한 폴리우레탄 시편을 사용하여, 평균 변형률 εSUBm/SUB=1.5, 진폭 변형률 εSUBα/SUB=0.2~0.8, 주파수 f=0.02~0.2의 조건에서 단축 사인형 반복 하중 실험과 제시한 점탄성 모델을 Matlab으로…
We have studied numerically the diffraction of a surface plasmon polariton (SPP) when it encounters a wide multi-wavelength slit in conducting films. As a jump process a SPP is excited beyond the slit by wave scattering at the second slit edge. The exciting radiation is produced when the incident SPP collapses at the…
The electronic band structures and band gap bowing parameters of In x Ga 1− x N are studied by the first-principles method based on the density functional theory. Calculations by employing both the Heyd-Scuseria-Ernzerh of hybrid functional (HSE06) and the Perdew-Burke-Ernzerhof (PBE) one are performed. We found that…
The phenomenon of resistive switching is based on nanoscale changes in the electrical properties of the interface. In the present study, conductive atomic force microscope based nanoscale measurements of copper oxide (CuO-multilayer graphene (MLG) hybrid interface based devices have been carried out to understand chan…
Silicon carbide nanowires were fabricated by gas pressure annealing of SiOC nanocomposite powders, which were synthesized by pyrolysis of a SiO 2 - sucrose gel. The reaction was carried out in an atmosphere sintering furnace without any additives. The nanowires have pronounced homogenous diameters smaller than 100 nm…
Reduced Graphene Oxide Wrapped Pd/TiO2 (r-GO@Pd/TiO2) which exhibited high photocatalytic activity under visible light was synthesized from commercial chemicals. The classic sol-gel method and the Ar gas bubbling composition was used in the preparation of the catalyst. Furthermore, the best Pd-doping concentration in…
Homogeneously doped Yb3+ and Er3+ cerium-based coordination polymer (CP) microspheres have been successfully synthesized on a large scale through a simple solvothermal route with 2,5-pyridinedicarboxylic acid (2,5-H2PDC) as the organic linker. CeO2: Yb3+, Er3+ porous microspheres were obtained by annealing the corresp…
The usual silicon-based display back planes require fairly high process temperature and thus the development of a low temperature process is needed on flexible plastic substrates. A new type of flexible organic light emitting transistor (OLET) had been proposed and investigated in the previous work. By using ultraviol…
Thermally stimulated current (TSC) measurement was employed to study the thermal stability of electro-optic (EO) polymers, i.e., guest/host polymer DR1/PMMA and side-chain polymer PMMA-co-DR1. Here the isothermal relaxation test showed that the relaxation time τ (85 °C) of side-chain polymer PMMA-co-DR1 is longer than…