Materials Literature
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The electron emission properties of submicron Si, GaAs, InSb, and InAs semiconductor particles and their multigrain structures have been investigated. The effect of the properties of nanoparticles on the field and secondary emissions has been established. A scanning electron microscopy-based method for measuring the s…
Cyanoethylation of natural glycyrrhetic acid methyl ester gave the corresponding 3β- O -(2-cyanoethyl) derivative which was treated with sodium azide to obtain a novel tetrazolyl derivative of biologically active triterpenoid, methyl 3β-[2-(1 H -tetrazol-5-yl)ethoxy]-11-oxoolean-12-en-30-oate.
The method of improving thickness uniformity of sputter-deposited film by using magnet rotation speed control technique as an advanced process control (APC) is discussed. It is demonstrated that magnet rotation speed control technique can improve both film thickness uniformity and its variation.
The history of formation and practical realization of the concept of the coupled reactor facilities that was embodied in the domain of aperiodic pulsed reactors is traced back. It is demonstrated that the application of the concept of coupled reactor facilities extends significantly the potentialities of the experimen…
Aluminum (Al) has been used as an interconnection material for the last 40 years. As the ultra-largescale integrated devices become more and more smaller, there are demands for the semiconductor gate performance to be improved through the use of a higher drive current and a lower junction capacitance. One attempt is t…
Integrated circuit (IC) technologies have been significantly changed due to the strong demands of high performance, multifunction, low power, small size, and low cost. Furthermore, IC technology paradigms have been shifted to one-chip integration, 3D integration, and multi-function integration. However, since the scal…
Abstract The methods of thermal cyclic tests used for determining the thermal fatigue resistance of materials are analyzed using thermal cyclic maps (TC maps). These methods are based on the construction of the dependence of life time N on plastic strain in a cycle εp. An analysis showed that the dependence of N on εp…
The paper considers how elastic displacements and mechanical stresses are distributed along a laminated transducer consisting of two piezoelectric plates with different amplitude-phase excitation that are separated by an intermediate layer and have their outer surfaces loaded on arbitrary input impedances. We analyze…
Niche applications in automobile and aerospace industries such as the management of integrity and operation based on the inputs from the network of sensors (e.g. pressure, accelerometer, vibration etc.) that are strategically located close to the high temperature area of the engine, requires reliable packaging solutio…
The ferromagnetic Li0.l0CU0.lONio.30Zno.4oFe2.1O4synthesized by the typical ceramic technique which is sintered at the various temperatures. The formation of single phase cubic spinel structure at varied sintering temperatures (Ts) is confirmed by the x-ray diffraction (XRD) analysis. XRD pattern confirms that the Tsd…
Abstract The kinematics of the deformation zone during lengthwise rolling is considered, and the slip, retardation, and gathering region lengths are studied. The condition of absent retardation region and passage to a four-region deformation zone is determined.
L’association par empilement de matériaux comme l’aluminium et le composite matrice époxy/fibres de carbone pose de nombreux problèmes en matière de perçage dus à la différence de leur usinabilité. De fait, on ne peut simplement juxtaposer les études réalisées sur chaque matériau constitutif pour ré
Fine Pitch interconnects for 2.5D Packaging is developed with the aim of meeting the need for higher functionality and higher power. Cu-Cu interconnect is preferred over the solder interconnect as solder may merged as the pitch is of fine dimension. Cu-Cu interconnects have many challenges such as Cu oxide formation,…
The solutions of the Bardeen–Cooper–Schrieffer equation are found within the model of the lower Hubbard subband taking into account three-site correlations and the superexchange, Coulomb, phonon, and spinfluctuation mechanisms of quasiparticle pairing. The Pr 0.89 LaCe 0.11 CuO 4 compound is considered as an example.…
The “fountain detector (FD)”, which is a low-pass secondary electron detector in a scanning electron microscope (SEM), has been developed in order to visualize the surface potential variation or the dopant density for semiconductor materials. A 4H-SiC p-n junction, which has different dopant densities in the p-region,…
We present an AlGaN/GaN high electron mobility transistor (HEMT) operating in enhancement-mode (E-mode) with metal-insulator-semiconductor (MIS) structure showing improved threshold voltage. The design includes an aluminium gallium nitride (Alo.3Gao.7N) barrier layer of 5-nm-thickness and a silicon nitride (SiN) passi…
We proposed a low-temperature Cu-Cu bonding method by a new type of self-reducible Ag ion paste in this paper. The Ag ion paste is free of any particles or precipitates, which can be easily prepared and stored. Because of its high dispersion characteristic, the Ag ion paste can also be uniformly coated or written on s…
The efficiency of broadband filtering of a polychromatic X-ray spectrum by a polycapillary structure in the region of photon energies E > 10 keV was demonstrated. A polycapillary 40.5-mm-long rod made of borosilicate glass and containing 10 6 parallel hexagonal capillaries was used as a filter. Filtering was performed…
Amorphous silicon (a-Si:H) thin films with deposition temperatures ranging from 100°C to 400°C from two different deposition chambers have been analyzed and characterized using various techniques including the Atomic Force Microscope (AFM). These amorphous silicon films were deposited in two separate Plasma Enhanced C…
The current state of neutron research at the IR-8 reactor is considered and it is shown that the research is focused on two main avenues: comprehensive radiation diagnostics for the sake of those knowledge domains which have not used it before and research of the structure of material under extreme conditions (high pr…