Materials Literature
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Controlling the surface chemistry of nucleating seeds during wet-chemical synthesis allows for the preparation of morphologically well-defined nanostructures. Synthesis conditions play a key role in the surface properties, which directly affect the functional properties of the material. Therefore, it is important to e…
An approach to describing of the excitation and propagation of the surface plasmon polaritons (SPPs) along the surface with the nanodisks that are located above them is proposed. In the framework of the proposed approach the dissipation function is calculated for the different geometry of the systems with the disks. T…
ABSTRACT This paper presents a control strategy based on stage temperature measurements to control composition of the products in a Petlyuk‐type distillation column. This column is formed by a prefractionator in which feed is introduced and a main column from which three product streams are extracted. Prefractionator…
Ab initio calculations of the chemical bond deviation in molecules were carried out using Gaussian 09 software. The results correlate with the estimations of the deviation angle obtained earlier using experimental data.
Synthesis of fine-dispersed particles of CdS by precipitation from thiourea solutions in the presence of different amino acids is carried out. It is found that the presence of ε aminocapronic, glutamic and n-aminobenzoic acids leads to the formation of small lamellar particles. Introduction of n-aminobenzoic acid in r…
Silane precursor microencapsulated intumescent flame retardant (MCIFR) was prepared by sol-gel process and then modified with Phenyltriethoxysilane. The effects of microencapsulation technology on the morphology, surface and thermostability properties of IFR were investigated by Scanning Electron Microscopy, Water Con…
Knowledge of carrier transfer, in quantum dot sensitized solar cells, is the key to engineering the device structure and architecture optimization. In this work, Zinc oxide (ZnO) nanowire (NW) arrays were synthesized on glass wafers and on GaN thin films for application in photovoltaic and light-emitting devices. The…
We propose a new intermediate band GaAs solar cell comprising an AlxGa1-xAs absorber with built-in GaSb type-II quantum dots (QDs) [a gradual AlxGa1-xAs absorber with built-in AlyGa1-ySb QDs (0 as a variant] separated from the depletion region. We study the modification of the band alignment at type-II interface by tw…
In this paper, we present the function of the processing conditions (the amount of filler or diluent in epoxy resin, whether post-curing or not) in thermal properties of the modified silica/epoxy nano-composite materials based on thermal gravimetric analysis (TGA).The results is showed that after post-processing for t…
This paper deals with acquisition of the material properties of the thermosetting plastic reinforced with various laminating angles of carbon fibers in order to apply to structural analysis of steering system components. The laminating carbon composites are manufactured as stacking uni-direction carbon prepreg with va…
O tratamento para modificação superficial requer um substrato com alto grau de limpeza, a fim de promover um aumento da energia superficial e melhorar a adesão da camada formada ao substrato. Técnicas que estão em crescente uso possuem geralmente o plasma como fonte energética. Nesse trabalho, utilizou-se o plasma pro…
Previous studies addressing the protection of tea polyphenols against cerebral ischemia/reperfusion injury often use focal cerebral ischemia models, and the optimal dose is not unified. In this experiment, a cerebral ischemia/reperfusion injury rat model was established using a modified four-vessel occlusion method. R…
A new red phosphor of strontium aluminate activated by Mn4+ was developed for high color rendering and warm white light-emitting diodes. The phosphor composition and conditions for synthesis were optimized through solid-state reaction. Meanwhile, the structure and morphology were investigated with XRD and SEM analysis…
혈관내피세포는 혈관 안쪽을 덮고 있는 편평한 세포층으로, 혈관의 기능과 혈관평활근세포의 증식을 조절한다. 폴리락타이드글리콜라이드 공중합체(PLGA)는 물성이 좋고 분해속도를 조절하기 좋은 생분해성 합성고분자이며, 여러 형태로 제조하기 쉽다. 누에에서 얻은 실크 피브로인은 18가지 아미노산으로 구성되어 있고 세포의 부착과 세포 기능 유지에 중요하며 화장품, 의료분야 등 다양한 분야에서 응용되고 있다. 본 연구에서는 용매 증발법을 이용하여 0, 10, 20, 40 및 80 wt%의 실크를 이용하여 실크/PLGA 하이브리드 필름을 만들었으며, MTT, SEM, ELISA…
The excitation of multiple surface-plasmon-polariton (SPP) waves guided by the interface of a metal and a onedimensional photonic crystal in the grating-coupled configuration was studied both experimentally and theoretically. Only p-polarized incident light was considered in the visible and near-infrared regimes. When…
A novel metal-organic coordination polymer [Cu(phen)(L)0.5(H2O)]n (H4L = (N,N′-5,5′-bis(isophthalic acid)-p-xylylenediamine, and phen = 1,10-phenanthroline) has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, and single-crystal X-ray diffraction. The crystallographic data show that th…
A model for DMFC anode performance is developed. The model takes into account potential--independent methanol adsorption on the catalyst surface, finite rate of proton transport through the anode catalyst layer (ACL), and a potential loss due to methanol transport in the anode backing layer. An approximate analytical…
Incorporation of polar functional moieties into polyethylene (PE) film has been achieved by graft copolymerization of polar monomers such as methacrylic acid (MAAc) and acrylamide (AAm) on to PE film, preirradiated with ${\gamma}$ -rays from $^{60}Co$ source, using benzoyl peroxide (BPO) as initiator in aqueous medium…
Method of quantitative estimates of the parameters of the icosahedral quasicrystals substructure, including specific phason defects, developed and successfully worked out using the experimental models of quasicrystalline Al₇₀Pd₂₁Re₉, Ti₄₁.₅Zr₄₁.₅Ni₁₇ and Al₆₄.₅Pd₂₁Mn₁₄.₅ with different preparation technology. The meth…
A violet divalent europium‐doped strontium aluminate ( S r– A l– O : E u 2+ ) phosphor particle was synthesized from a metal‐ethylenediaminetetraacetic acid ( EDTA ) solution of S r, A l, E u, and particulate alumina via spray drying and sintering in a reducing atmosphere. The emission properties, crystal structures,…