Materials Literature
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The article proposes a new method of particle coagulation with the help of ultrasonic vibrating system with the radiator in the form of disk step-variable in thickness. For practical application the design procedure of radiators of step-variable type is described.
Abstract An acetone formaldehyde sulfite based polycondensate (Mw ~ 64 kDa), which is commonly used as a superplasticizer in cement and concrete, was intercalated into a hydrocalumite type LDH structure. Preparation was done by controlled rehydration of tricalcium aluminate in the presence of the polymer. Formation of…
The results presented here concern the NiTi alloy subjected to plastic deformation by compression combined with reversion oscillating torsion. The compression rate was 0.05 mm/s and the torsion frequency and angle were 1Hz and ± 3o, respectively. The maximal strain obtained was c = 6.20. The structure of the deformed…
The constructed thermodynamic theory of magnetic birefringence of transverse sound in easyplane weak ferromagnets with an axial basal anisotropy induced by boundary conditions has been generalized to the case of additional inclusion of the hexagonal anisotropy enhanced by isotropic mechanical stresses. The magnetoelas…
Abstract In this paper, we demonstrate that semiconductor Te is an effective catalyst for the growth of single‐walled carbon nanotubes (SWNTs). The results show that the SWNTs from Te and EtOH have better conductivity, and better structural uniformity with less defects than those from Fe/Mo nanoparticles. This new ele…
We fabricated Fe(Se 1−x Te x ) thin films on LSAT(100), MgO(001), R-Al 2 O 3 substrates by ArF excimer pulsed laser deposition (ArF-PLD) and investigated pulse repetition rate dependence on film growth of Fe(Se 1−x Te x ) thin films in ArF-PLD. Through x-ray diffraction measurements of Fe(Se 1−x Te x ) thin films grow…
Artificial neural network methods are established and designed to predict the warp breakage rate. The objective of this paper is to investigate the predictability of the warp breakage rate from a sizing yarn quality index using a feed-forward back-propagation network in an artificial neural network system. In order to…
Termal görüntüleme cihazlarının, askeri, endüstri ve uzay araştırmaları gibi geniş uygulama alanlarından dolayı, sıcaklığa bağlı polarize olan pyroelektrik maddeleri üzerindeki çalışmalar, araştırmacıların ilgisini çekmektedir. Bu maklede, pyroelektrik olayın, pyroelektrik maddelerin ve bu maddelere ait bazı uygulamal…
The preparation of palladium (Pd) metal clusters stabilized in colloidal suspensions of BEA zeolite nanocrystals is studied. This procedure involves the reduction of the palladium cations in the zeolite pores that is conduced by <sup>60</sup>Co gamma radiolysis. The formation of small sized clusters for Pd<sup>2+</sup…
We have succeeded in direct integration of carbon nanotubes (CNTs) for via interconnects using different back contact materials. Highly doped Si and poly Si are used, aiming at the CNT via interconnects directly from source, drain and gate of transistors. In addition, we propose to use aluminum copper alloy (AlCu) as…
We report our detailed investigation of the microstructure and surface chemistry of nanoporous black Si layers using transmission electron microscopy techniques. We find that the one-step nanoparticle-catalyzed liquid etch creates deep conical nanovoids. The cones provide the density-graded surface that suppresses ref…
Six copolyesters were prepared from bis(4-hydroxybenzylidene)acetone (HBAC) and bis(4-hydroxy-3- methoxybenzylidene)acetone (MBAC) (as varying diol, diol-1) with adipoyl chloride, azelaic acid dichloride and sebacoyl chloride and 4-(4-nitrophenylazo)resorcinol (as a common diol, diol-2) by phase transfer catalysed con…
There has been an increased usage of adjustable frequency drives (AFD) coupled with induction motors due to the demand for higher operating efficiency levels. Due to the starting requirements, motor manufacturers are forced to employ high resistivity rotor bars which lead to higher losses and lower motor efficiency. T…
Silk fibroin (SF) has been extensively studied for application in wound dressing, bone, vessel and nerve regeneration. We have previously reported on good in vitro biocompatibility of SF nanofibers with neuronal cell. In the present study, we prepared SF nanofiber-based artificial nerve conduit to bridge 10mm long sci…
The interaction of CdSe/ZnS nanocrystals (NCs) (solubilized by trioctylphosphine oxide (TOPO) molecules) with ortho-phenanthroline (OP) molecules has been investigated. It is shown that OP molecules can replace TOPO; in this case, bonding of OP molecules with the nanocrystal surface does not lead to the formation of N…
Abstract Atomistic quantum simulation is performed to compare the performance of zero-Schottky-barrier and doped source-drain contacts carbon nanotube field effect transistors (CNTFETs) with strain applied. The doped source-drain contact CNTFETs outperform the Schottky contact devices with and without strain applied.…
Abstract This paper presents the investigation of tuning the color and photoluminescence of a range of triphenylamine‐ based derivatives with various substituent groups. The ultraviolet/visible absorption and fluorescence spectroscopy of the derivatives showed remarkable difference. The molecular geometry optimization…
Low-frequency (LF) atmospheric-pressure plasma (APP) jets have been used for patterning of thin fibronectin films deposited on a silicon (Si) wafer with the use of a metal stencil mask. Since fibronectin is an adhesion protein that can be found in the extracellular matrix (ECM), a micro-patterned fibronectin film may…
In the last few years, an intense research effort has focused on the synthesis of fluorescent nanopigments for functional inks, light harvesting, tagging, tracing, (bio)labeling, imaging, and lighting applications. Moreover, combined with dielectric matrices, these fluorescent nanoparticles may open the way to the rea…
Zirconium oxide (ZrO 2 ) has generated wide interest because of its potential in applications such as solid oxide fuel cells, catalysts and optical devices. In these applications, it is important to control the grain size of the material and increase the surface area by introducing porosity with tailored pore size. Th…