Materials Literature
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Transmission of H + 2 ions through tapered capillaries in insulating polycarbonate (PC) foil is reported. Guiding, focusing effects and multi-peaks phenomena on ions through capillaries have been studied.
In the current research, organic solar cells (OSCs) with various concentrations of pentacene in Poly(ethylenedioxythiopene):Poly(styrenesulfonate) (PEDOT:PSS) interface layer were investigated for better hole extraction. The ITO/Pentacene + PEDOT:PSS/P3HT:PCBM/Al-fabricated solar cell fabricated via brush coating prov…
The plate heat exchanger has been widely used in water heating systems due to high efficiency, simple structure, and easy maintenance. However, the studies on the effects of fouling on the heat transfer performance under various operation and maintenance conditions are very limited in the open literature. The objectiv…
The resonant Raman scattering spectra of X-ray-irradiated single-walled carbon nanotubes (SWNTs) have been measured at 532, 561, 568, 647, and 660 nm. We found that X-ray irradiation induced a marked change in the radial breathing mode (RBM). In order to analyze the X-ray-induced change in the RBM spectra, we drew a m…
The electronic structure of TEMPO (2,2,6,6-tetramethyl-1-piperidinyl N-oxide), its cation and anion were studied experimentally using the following electron spectroscopy techniques: electron energy-loss spec-troscopy (EELS), measurement of elastic and vibrational excitation (VE) cross sections, HeI photoelectron (PE)…
In this paper a new concept of a bidirectional air electrode for alkaline rechargeable batteries is introduced. The functionality of this concept, which bases on high surface nickel-foam, is shown by a demonstrator. In order to enable the charging-reaction, the concept integrates the catalytic properties of the nickel…
From nano-scratch tests, strong interfacial adhesion has been found for polystyrene (PS) and poly(methyl methacrylate) (PMMA) bilayer films prepared by a water floating (WF) method, while a PS layer on a PMMA film produced by a spin coating (SC) method peels off easily at the interface. Neutron reflectivity measuremen…
Polarization-dependent X-ray absorption fine structure spectroscopy at the carbon near K-edge (C K-NEXAFS) is developed for a layer-by-layer analysis, by measuring the distribution of electrons emitted by X-ray absorption as a function of emission angles. The C K-NEXAFS spectra for multilayer n -C 12 H 26 grown on a P…
Abstract We studied the influence of two different kind of annealing, conventional annealing and current annealing, on the magnetic and magneto‐transport properties of amorphous Co‐Fe rich glass‐coated microwires with the nominal composition Co69.2Fe4.1B11.8Si13.8C1.1 fabricated by Taylor‐Ulitvosky technique. At a cer…
O aumento da demanda mundial de aço e a redução da disponibilidade dos recursos naturais têm sido responsáveis pela formação de um panorama de desenvolvimento desafiador para a engenharia metalúrgica nos últimos anos, encarregando-a de equacionar o problema da obtenção de materiais em quantidade, qualidade, em ciclos…
Pahat HSS yang digunakan dalam proses pengeboran memiliki umur dan tidak dapat digunakan secara terus menerus. Banyak faktor yang mempengaruhi umur pahat diataranya keausan pahat. Untuk menentukan keausan pahat pahat bor biasanya operator mesin hanya melakukan secara visual atau meraba pada bagian ujung mata pahat. Ca…
Empty Palm bunches (TKKS) is one of the solid waste generated by industrial palm oil plantations which contain lots of fiber and is one of the natural fiber source that the availability of abundant in Indonesia, especially in the province of Lampung. TKKS fiber can be used as an alternative amplifier to composite mate…
We report an experimental and theoretical study of single-molecule inner-shell photoemission over an extended range of photon energies. The vibrational ratios v=1/v=0 from the C 1s photoelectron spectra, although mostly determined by the bond length change, are shown to be affected also by photoelectron recoil and sca…
Abstract Review: 82 refs.
determination. Findings: The maximum dye adsorption occurred during the first 30 minutes. The sorption capacity for adsorption of the dye was found to be 2.76 mg/gr. The dye removal efficiency was increased from 87% to 97.2% by decreasing the initial concentration of dye from 100 to 25 mg/l. By increasing the adsorben…
First-principles calculations were used to evaluate the coefficients of the phenomenological equation for perovskite compounds of Ba 1− x Sr x TiO 3 up to the eighth order. The second- and fourth-order coefficients for the cubic structure’s phenomenological equation agreed with the previously reported values [King-Smi…
ABSTRACT Serrated structures on a micrometer scale were spontaneously formed along the edge of a poly(dimethylsiloxane) (PDMS) disk using the following procedure. First, a drop of PDMS prepolymer was placed on a glass slide, followed by vulcanization. Second, the obtained PDMS disk was soaked in a mixture of sulfuric…
Abstract In the present paper, we deal with the electromagnetic properties of Fe‐rich microwire polymer meta‐composites prepared by embedding glass‐coated Fe‐based microwires into the E‐glass prepreg matrices in a parallel fashion. The free‐space measurement shows that a transmission window was created by adjusting th…
Film-growth process of hydrogenated amorphous silicon–oxygen alloys (a-SiO:H) from CO2/(CO2 + SiH4) plasma has been investigated to control the optoelectronic properties in the resulting materials. Optical emission spectroscopy results and simple simulation results for steady-state density of chemical species in the p…
Efficiency in the C/CO3 2-/O2 system (725 °C) is related to the distribution of current in the porous anode. Efficiency below 50% results when oxidation occurs within matrix at low local rates, producing CO and CO2 by a 2-e- net reaction. Efficiency of 75% HHV requires concentration of current on a polarized exterior…