Materials Literature
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We prove that the bound state energies of the two-dimensional massive Dirac operator with dipole type potentials accumulate with exponential rate at the band edge. In fact we prove a corresponding formula of De Martino et al. [Phys. Rev. Lett. 112(18), 186603 (2014)].
Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan E-mail : akitsu@rs.kagu.tus.ac.jp Manuscript received online 15 March 2016, accepted 10 May 2016 DSSC (Dye sensitized solar cell) has been researched by many laboratories and dye is main materia…
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Recently, Wireless Sensor Networks (WSNs) have been widespread utilized in automation. The power supply of WSNs has significant influences on their performance. This paper presents a novel power management circuit for WSNs. The proposed circuit provides an interminable energy source for wireless sensor nodes through e…
This paper presents an iterative calculation method which enables the dimensioning of indoor air clearances for High Voltage Direct Current (HVDC) converter stations for the purpose of insulation co-ordination based on simulated or calculated impulse (withstand) voltages. For this aim mainly normative procedures menti…
Tribological materials based on molybdenum disulfide nanoparticles localized on the surface of ultradispersed polytetrafluoroethylene were prepared. The composition and properties of the new composite materials were studied. Introduction of ultradispersed additives based on polytetrafluoroethylene with MoS2 and on pol…
We propose a novel concept for highly-directive low-profile antennas, based on a single localized source embedded in a cavity, covered by an omega-type bianistoropic metasurface (BMS). We show that such metasurfaces, which include subwavelength particles with electric and magnetic polarizabilities, and magnetoelectric…
The new ultra-low loss build-up film has been developed by the combination of the matrix layer, which has the semi-IPN structure, and the primer layer. The matrix material was designed and prepared by the original polymer blend modification technology with co-crosslinking reaction of rigid thermosetting resin and the…
A The emergence of carbon nanoparticles (CNPs) has received greater potential in biological labeling, bioimaging and other different optoelectronic device applications. Preparation of CNPs using Pongamia pinnata shoots in the presence of castrol oil is reported in the present study. The structural and optical properti…
Recently, continuing growth of highly-functional electronic devices such as wearables is increasing the volume and speed of data transmission and high frequency communication is essential. Thus, device component suppliers must offer products with low transmission loss.
Because of their atomic-scale thickness, adequate band-gap, and pristine interface, monolayer or bilayer two-dimensional transition metal dichalcogenides (TMDs) such as MoS2and WSe2(Fig. 1(a)) have emerged as potential channel materials for future ultimately scaled low-power CMOS devices [1-7]. Bilayer TMD devices hav…
The study of electric machines subject to rotor eccentricity is usually performed using a winding and permeance function approach. In this paper, an alternative method is investigated based on conformal mapping. The geometry of a an eccentric round-rotor machine is mapped into a uniform air-gap topology by means of Mo…
The work presents relationships of γ→α' and α'→γ-transformations in reactor 12Cr18Ni10Ti and 08Cr16Ni11Mo3 austenitic stainless steels induced by cold work, irradiation and/or temperature. Energy and mechanical parameters of nucleation and development of deformation-induced martensitic α'-phase in the non-irradiated a…
This paper presents and discusses the results of the instrumented indentation test of the samples of the system Bix(As2S3)100-x, x = 1.5, 3, 5, and 7 at.%. Measurements of mechanical parameters were performed using a Fischerscope HM2000 S nanoindentation device. The experimental data obtained by measuring the microhar…
Electrochromism is changing color of a substance in response to the applied an external electric field and the phenomenon is reversible. WO 3 is very attractive material due to its electrochromic properties as well as it is also attractive for many different applications such as gas sensors, phosphorous screen, textil…
The dependences of spontaneous polarizations P sp of solid solutions of aluminum, gallium, and indium nitrides on the compositions were estimated using the Harrison bond-orbital method. A simple formula was proposed to estimate P sp using only lengths of the interatomic bonds between the nearest neighbor atoms and the…
A composite coating was formed on MA8, MA14, and MA12 magnesium alloys by plasma electrolytic oxidation with subsequent immersion of samples into a superdispersed polytetrafluoroethylene suspension. In vitro volumetry determined that using this coating significantly reduces the magnesium alloy dissolution rate. It was…
A series mathematical model has been developed for the prediction of flow stress and microstructure evolution during the hot deformation of metals such as copper or austenitic steels with low stacking fault energies, involving features of both diffusional flow and dislocation motion. As the strain rate increases, mult…
The peculiarities of solid-phase synthesis are studied experimentally and numerically in the aluminum-fluoroplastic and aluminum-sulfur mixtures in cylindrical ampoules under explosive loading. The experimental results show that the use of a mixture capable of ultrafast exothermic reactions leads to the destruction of…
The phosphor Dy3+ doped M type gadolinium orthotantalate GdTaO4 was prepared successfully by traditional solid state reaction and the photoluminescence of GdTaO4: xDy3+ (0.01 ≤ x ≤ 0.10) has been investigated under ultraviolet and vacuum ultraviolet excitation. In the excitation spectra of GdTaO4: Dy3+, the overlap ap…