Materials Literature
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Microelectrodes are a powerful tool for interfacing neural tissue with electronics, both for in vitro and in vivo. So called microelectrode arrays allow for electrical recordings as well as for electrical stimulations at many parallel sites. Their design and substrate may vary strongly with the field of application. F…
중앙에 균열을 갖는 단층 그래핀시트(single layer graphene sheet, SLGS)의 모드 II 파괴 거동을 원자시뮬레이션과 해석 모델에 기초하여 고찰하였다. 지그재그 그래핀 모델의 파괴를 분자동역학(molecular dynamics, MD)에 의해 해석한 결과 모드 II 파괴인성은 2.04MPa√m인 것으로 밝혀졌다. 또한 SLGS 의 이론적인 KIIc 를 유도하기 위해 면내전단하중을 받는 다공체에 대한 파괴역학적 해석도 진행하였고 유한요소해석도 병행하였다. 모드 I 과 모드 II 의 비를 다양하게 변화시켜가면서 SLGS 의 혼합모드 파괴를 검토한…
In article number 1300632, Jong Hak Kim and co-workers present a nanopatterning technique using nanostamps that provides a facile process to create a nature-inspired moth-eye structure. The structure achieves high transmittance in the visible range as well as a self-cleaning effect. The resulting solid-state dye-sensi…
Liquid-crystal-based films of different thicknesses, fabricated by the Langmuir technology, have been studied. Previously, we revealed a structural phase transition in these films at a temperature of ∼75°C. To clarify the nature of this transition, the temperature dependences of the capacitance and conductance of thes…
A Ni-7.2at%Ti alloy was prepared and thed-electron occupancy of Ni was measured from electron energy loss spectroscopy (EELS) of nickel. The results showed that the white-line intensity of Ni EELS and thed-electron occupancy of Ni in Ni-7.2at%Ti alloy did not change significantly relative to pure Ni.
In the sodium citrate solution systems containing double metal ions with different Pd-Pt molar ratios and single Pt (IV) ions, Pd Core @ Pt Shell nanoparticles were synthesized by the photochemical coreduction and Pd seed method, respectively. By means of characterization of TEM, the change regularity of the composite…
The effect of modified metakaolin (MMK) on the evaporable water and chemically bound water content of hardened cementitious materials have been investigated. Concrete specimens with 0%, 4%, 7% and 10% of MMK were included. Metakaolin was pre-modified in order to increase the dispersion and contact angle, which might f…
Neste estudo foi implantado um retalho de biomembrana de látex natural em substituição a um fragmento da parede de estômago de coelhos albinos, raça Nova Zelândia, adultos, machos não castrados (n=12), com o intuito de avaliar o processo de reparação tecidual no que se refere à biocompatibilidade, à capacidade de repa…
Nd:YAG nanopowder was prepared by urea co-precipitation method. XRD, TG-DTA, SEM and spectra analysis were utilized to study the properties of the powder. Results indicated that fine Nd:YAG nanopowder can be acquired at 1000°C for 10h. The fluorescence spectra shown that the strongest peak was located at 1061nm, corre…
A polystyrene spheres (PS) coated copper foil was adopted as a template to prepare three-dimensional (3D) porous Sn film electrode. The PS colloidal spheres were synthesized through emulsion polymerization and spin-coated on copper foil. Then Tin was electrodeposited on the template foil, following by etching in tetra…
The objectives of this particular research were testing covering materials for models and making Thai childrens standard sized models. The covering materials chosen for the models were hand-woven cotton fabrics from four sources. The sub materials were non-woven pressed fabrics. Data were statistically analyzed in ter…
info:eu-repo/semantics/nonPublished
For the problems such as layering and splitting of traditional sandwich structure composite, a resin matrix composite with lattice and interface reinforced structure has been designed, and using vacuum forming process was developed in this paper. The composite material has high specific strength and stiffness. On this…
Ba(6-3x)Nd(8+2x)Ti(18)O(54)(BNTl14) is a high permittivity dielectric with low temperature coefficient (Tcf). Low coefficient of change of dielectric permittivity with temperature (Tcf) is an unusual materials property. The research is aimed at discovering how atomic structure relates to temperature coefficient. Sub-Å…
A theoretical framework to model the dynamics of Ultrasound Contrast Agent (UCA) inside a phantom vessel is presented. The model is derived from the reduced Navier-Stokes equation and is coupled with the evolving flow field solution inside the vessel by a similarity transformation approach. The results are computed, a…
Numerical simulations with ABAQUS/Explicit into which Johnson-Cook constitutive relation is incorporated, are performed to study the perforation of Weldox 460E steel plates struck normally by conical-nosed projectiles with different cone angles. Different failure modes and perforation process are obtained. Numerical r…
The effect of additions of transitional refractory metals on the structure and properties of Al–Zn–Mg alloys, made by ingot and PM routes, was investigated. The strength of the ingot alloys especially is increased by scandium and zirconium. The modifying action of scandium inhibits recrystallisation and precipitation…
The method of carbon nanotubes by DC-PCVD is analysed. Growth environment of carbon nanotubes is researched with the substrate temperature at 500°C-900°C.The pressure of gas is 60torr,75torr,90torr.It is appropriate when the temperature is 700°C and the pressure is 75torr.Growth characteristic of carbon nanotubes is r…
In January 2014, the Swiss Federal Laboratories for Materials Science and Technology (Empa) joined the National Institute for Materials Science (NIMS) in collaborative activities on Science and Technology of Advanced Materials (STAM). STAM was founded in 2000. In 2005 NIMS took over the management of its peer review a…
In order to improve fatigue life of wheel steel, LF-VD secondary-refining process is done with Al-deoxidation and slag of high basicity, high Al2O3 content and low oxidizing property. Inclusion content would be influenced by [Al]s, [Mg], [Ca] in molten steel. It is found that Al2O3 inclusions, which are the products o…