Materials Literature
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Achieving high efficiency and stability in inverted organic solar cells fabricated by laminated gold leaf as top electrodes, Razali, Nur Tahirah, Osaka, Itaru, Takimiya, Kazuo, Vohra, Varun, Murata, Hideyuki
A stochastic model studying the process of formation and destruction of protein gas-liquid disperse system (foam) is proposed. The model allows one to describe the process state at each time moment of the first cycle. Mathematical expectation, variance, and other moments of random values, which characterize the number…
Sintered silver is a possible replacement for high performance and Pb free die attach materials in power modules and traditional microelectronic packages because of its high melting temperature, high thermal conductivity and good thermo-mechanical properties. However, reliable sintered silver joints can only be easily…
Abstract Thin films of chitosan acetate (CSA)-copper (II) [Cu (II)] complex were prepared by mixing Cu (II) oxide (CuO) nanoparticles in acetic acid solution of chitosan and the casting method. The changes in chemical structure of modified chitosan were confirmed by UV-Vis spectroscopy. Fourier transform infrared (FTI…
Wearable devices are designed to be low-profile, light-weight and integrated seamlessly into daily life. Comfort is one of the most important requirements for wearable devices. Textile-based radio frequency (RF) devices are soft, flexible and can be integrated into textiles of clothing. This paper summarises state of…
We have investigated the electronic properties of WTe 2 armchair nanoribbons with defects. WTe 2 nanoribbons can be categorized depending on the edge structure in two types: armchair and zigzag. WTe 2 in its bulk form has an indirect band gap but nanoribbons and nanosheets of WTe 2 have direct band gaps. Interestingly…
In this paper, we report our new optical method for the measurement of the bandgaps of half-metallic ferromagnets (HMFs) that are sensitive to both surface/interface and bulk regions of these ferromagnets depending on the light incident angles and resulting penetration depth. We measured the bandgap of polycrystalline…
We introduce a new experimental setup with a biasing circuit and computer control for electrical power regulation under reversing polarity in Pt microwires with dimensions of 1×10 μm(2). The circuit is computer controlled via a data acquisition board. It amplifies a control signal from the computer and drives current…
In this study, performance of hydrogen-permselective membrane fixed bed reactors to produce isobutene is studied at steady state condition. The proposed reactors have been modeled heterogeneously based on the mass and energy conservation laws. The considered reaction networks in the model are isobutene dehydrogenation…
This paper discusses how the nanoparticles of a silver citrate hydrosol affect the fluorescence and phosphorescence intensity and lifetime of anionic and cationic dye molecules. It is found that, depending on the nanoparticle concentration of the silver hydrosol, there is both amplification and quenching of the fluore…
We developed a silicon avalanche photodiode (Si-APD) linear-array detector for use in nuclear resonant scattering experiments using synchrotron X-rays. The Si-APD linear array consists of 64 pixels (pixel size: 100 × 200 μm(2)) with a pixel pitch of 150 μm and depletion depth of 10 μm. An ultrafast frontend circuit al…
The multi-branched Husimi recursive lattice is extended to a virtual structure with fractional numbers of branches joined on one site. Although the lattice is undrawable in real space, the concept is consistent with regular Husimi lattice. The Ising spins of antiferromagnetic interaction on such a set of lattices are…
Ceria abrasives which are made with wet chemical precipitation method are expected to reduce defects on SiO2films, but improvement of removal rate is required. When picolinic acid or additive A was added in the ceria slurries, the removal rate improved to the same level as conventional calcined ceria. Many researches…
The influence of weak (10–100 kA/m) low-frequency (10–20 Hz) pulsed magnetic fields on the surface structure and physical and mechanical parameters of Fe 3 (SiAl) alloys is studied by atomic-force microscopy and porometry.
This paper presents a novel Shape Memory Alloy (SMA) linear actuator and its application driving the joints of an anthropomorphic robotic hand. Its main feature is that it is a flexible SMA actuator, it is designed so that it can be bent. The possibility of bending the actuator while preserving its capacity to produce…
Compounds [HBipy][Y(NCS) 4 (Bipy) 2 ] · H 2 O ( I ), [HPhen][Y(NCS) 4 (Phen) 2 ] ( II ), and [Y(Nic) 3 (H 2 O) 2 ] 2 ( III ), where Bipy is 2,2′-bipyridine and Phen is 1,10-phenanthroline, are synthesized and structurally characterized by X-ray diffraction analyses (CIF files CCDC 984621, 984622, and 934971, respectiv…
We study surface plasmons on two-dimensional square arrays of sub-wavelength holes in a gold film deposited on an optically-excited semiconductor. We observe four resonances of which we measure the resonance frequencies, the spectral widths, and the relative intensities. The spectral widths allow us to quantify variou…
This paper presents a numerical technique investigating the final stage of focusing a radially converging nonspherical shock wave in the neighborhood of center of the axially symmetric cavitation bubble subjected to strong compression. Hydrodynamic model used includes liquid compressibility, heat conductivity of vapor…
The energy spectrum and the optical absorption spectrum of C 74 fullerene are calculated within the Hubbard model with regard to strong Coulomb correlations. It is shown that, due to the strong correlations, the energy spectrum is split into two 5.732 eV wide Hubbard subbands. The gap between these subbands is the gap…
Several kinds of highly-branched block polyethers were synthesized via anion ring-opening polymerization of propylene oxide (PO) and ethylene oxide (EO), using phenol-amine resin (PA) as the initiator. The rheological properties determined by rotational rheometer all followed the regular rules of polymer systems: unde…