Materials Literature
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We introduce a new technique to study the crystallization process in phase-change memory. By this technique, crystallization is characterized in the ON-state at extremely low currents, allowing to extend the time scale of crystallization times to more than two decades. To describe the pulse-induced crystallization in…
Abstract The effect of mechanical uniaxial stress on the electrocaloric behavior of ferroelectric materials has been analyzed. The magnitude of the electrocaloric effect was enhanced using controlled uniaxial stress. This study was performed for two classes of ferroelectric materials: 94(Bi 1/2 Na 1/2 )TiO 3 –6BaTiO 3…
The free vibration of micro-beams is analyzed employing three different beam models. The previously obtained equations of motion for Bernoulli–Euler and Timoshenko models are solved analytically. A higher-order model is devised, which satisfies the lateral boundary conditions of micro-beams. The equations of motion wi…
Abstract Aluminum‐doped zinc oxide (ZnO:Al) films were deposited by direct current magnetron sputtering in incorporating hydrogen in sputtering gas at room temperature. The influences of hydrogen content in sputtering gas on the structural, optical, and electrical properties of ZnO:Al films were systematically investi…
In this work, n- ZnO /p- Si heterojunction photodetectors were prepared by drop casting of ZnO nanoparticles (NPs) on single crystal p-type silicon substrates, followed by (15–60) min; step-annealing at 600 ∘ C. Structural, electrical, and optical properties of the ZnO NPs films deposited on quartz substrates were stu…
Magnesium alloys have low density densities and high specific strengths that are comparable to steels and titanium alloys. Therefore, they are widely used as structural materials in the automotive and aerospace industries. However, the use of magnesium alloys is hindered by the fact that they offer insufficient resist…
Nonstoichiometry and chemical diffusion in Co 3 O 4 oxide have been studied as a function of temperature (973-1173 K) and oxygen pressure (30-10 5 Pa), using thermogravimetric techniques. It has been found that at very low oxygen pressures, close to the dissociation pressure of the oxide, interstitial cations and quas…
In the present study, 2D micro- and nanofibrous polycaprolactone (PCL) scaffolds were fabricated using the electrospinning technique. The thermal, microstructure and mechanical properties of the fabricated micro- and nanofibrous scaffolds were assessed using structural/phase, elemental, morphological characterizations…
To improve blood compatibility of polyurethane (PU), phospholipids grafted carbon nanotubes (CNTs) were prepared through zwitterion-mediated cycloaddition reaction and amide condensation, and then were added to the PU as fillers via solution mixing to form biomimetic surface. The properties of phospholipids grafted CN…
Functionalization of a biomaterial surface with adhesive ligands is an effective way to promote specific cell adhesion. Ideally, biomaterial for applications in biomedical implants should simultaneously promote host cell adhesion and inhibit bacterial adhesion. Currently, little attention has been paid to the design o…
Effect of small addition of tin (1.7 at.%) into LaNi 4.5 Co 0.5 alloy on gas phase and cathodically charged hydrogen absorption ability as well as its corrosion resistance in 6M KOH solution is discussed. To reveal the effect of Sn doping three alloys have been selected: LaNi 4.5 Co 0.5 (precursor), LaNi 4.5 Co 0.5 Sn…
The preparation, X-ray structure, and optoelectronic properties of bis(diarylmethylene)dihydrothiophene 1 and its π-extended analogues 2 are described. The development of a simple, short-step synthetic route allowed us to prepare derivatives with different aryl units. X-ray crystallographic analysis of 1b and 2b revea…
Abstract The covalent grafting of xanthates onto carbon nanotubes (CNTs) by using peroxides as radical initiators was studied. Carbon nanotubes were functionalized with seven different xanthates by employing dilauroyl peroxide as a radical initiator. This allowed for the concomitant double functionalization by both xa…
Abstract By means of optical microscope (OM), X‐ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses, the microstructures of as‐cast and heat‐treated Mg–4Zn–1Y (wt%) alloy containing quasi‐crystal phase were studied. The microstructure of the as‐cast alloy consi…
This review focuses on recent accomplishments on complex metal oxide based multifunctional materials and the potential they hold in advancing integrated circuits. It begins with metal oxide based high- κ materials to highlight the success of their integration since 45 nm complementary metal–oxide–semiconductor (CMOS)…
La0.7Sr0.3MnO3 (LSMO) thin films were successfully prepared on (100), (110), and (111) oriented SrTiO3 substrates by chemical solution deposition method. The structural, magnetic, and magnetotransport properties were systematically studied. X-ray diffraction θ-2θ and ϕ-scan measurements results show that all the films…
Spintronic devices currently rely on magnetization control by external magnetic fields or spin-polarized currents. Developing temperature-driven magnetization control has potential for achieving enhanced device functionalities. Recently, there has been much interest in thermally induced magnetisation switching (TIMS),…
Abstract Polymer hydrogels and small‐molecule‐based (SMB) supramolecular hydrogels have been widely explored. But oligomeric hydrogels have remained a challenge because synthetic difficulties of the oligomers and control of their amphiphilicities. Reported herein is the rational design of two precursors Cys(SEt)‐Lys‐C…
Abstract The uniaxial tensile tests were carried out at temperature ranging from room temperature (RT) to 523 K under strain rates of 0.001, 0.010 and 0.100 s −1 to obtain the flow stress of AZ31B magnesium alloy. The tensile tests were simulated by the finite element method (FEM) to calculate the critical damage valu…
In recent years, chemotherapy with caffeine has manifested potently high efficacy against osteosarcoma, although adverse effects have been observed. Recently, we developed a novel drug delivery system (DDS) with nonionic vesicles prepared from Span 80 which have promising physicochemical properties as an attractive po…