Materials Literature
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Crystal structures of the Ln2Zr2O7 (Ln = Nd and La) were refined by the Rietveld analysis of powder neutron diffraction (ND) data at room temperature. La2Zr2O7 had a pyrochlore (P)-type structure of almost completely ordered for oxygen vacancy. On the other hand, Nd2Zr2O7 had the P-type structure for the oxygen vacanc…
This article is a perspective that introduces several review articles in the field of shape-memory and shape-changing polymers. It is intended to emphasize the versatility of these materials as active, smart polymers as well as highlight the potential impact of these materials. The biomedical device industry commonly…
Diatoms are tiny algae (see Figure) that are ubiquitous to aquatic environments, from backyard ponds to the open ocean. There are over 200,000 diatom species, which together carry out roughly one-fifth of the world's photosynthesis (Armbrust, 2009). Diatoms often live under variable conditions, which require them to a…
The influence of different transition metals doping (Ti and Zn) on structural properties and electrochromic adjustment and performance of sol-gel derived WO 3 thin films was conducted and investigated. Ti-doped WO 3 and Zn-doped WO 3 thin films were deposited onto F-doped tin oxide (FTO) substrates using spin coating…
Different approaches have been used in developing new coronary stents to protect against thrombosis and minimize restenosis. Here we describe a new zwitterionic bare metal stent (BMS) surface based on 2-((bromobutyryl)oxy)ethyl acrylate (BBEA) hyperbranched polymer. The new BMS produced was studied for its blood compa…
This paper reports a theoretical and experimental study of the heterostructure photocatalytic activity in a CdS or ZnS and CdS@ZnS decorated system prepared by a microwave assisted solvothermal (MAS) method. A theoretical model of the decorated system was created in order to analyze the electronic transition mainly in…
Melt blending of 1:1 poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and glycerol-plasticized starch (TPS) was performed in the presence of an organically-modified montmorillonite, incorporated at 2.5, 5, 7.5 and 10 wt% amounts. Scanning electron micrographs (SEM) revealed the role of the organoclay as a compatibi…
Tandem systems allowing enhanced two-photon (2P) absorption in a wavelength range permitting coupling of the primary excitation by energy transfer to an intramolecular cage known to have fragmentation properties suited to photolysis in neuroscience is demonstrated to lead to a 10-fold improvement in the 2P photolysis…
Shape anisotropy of colloidal nanoparticles has emerged as an important design variable for engineering assemblies with targeted structures and properties. In particular, a number of polyhedral nanoparticles have been shown to exhibit a rich phase behavior [Agarwal et al., Nat. Mater., 2011, 10, 230]. Since real synth…
To study hybrid & non-hybrid UD composites performance of hybrid filament wound and hybrid fabric consists of glass and carbon fibres are considered.
Plastics produced from petrochemical sources and known as polypropylene are now accumulating in our environment at rates of millions of tons per year creating severe problems. The present study aims to the production and isolation of PHB (polyhydroxy-buty rate ), a biodegradable plastic, from agro-industrial waste pro…
Polypyrrole (PPy), as an electrical conductive polymer, has been widely investigated in biomedical fields. In this study, PPy membrane at nanoscale was electrically deposited on indium-tin oxide glass slide with sodium p-toluenesulfonate as supporting electrolyte. Electropolymerization of PPy was performed under a con…
Nanocrystalline ZnO particles doped with Mn(II) ions were prepared by a forced hydrolysis method of zinc acetate dihydrate and manganese acetate tetrahydrate, under reflux, in buthanol. The precipitate obtained was separated by centrifugation at 9.000 rpm and purified by refluxing in water. The dopant percentage was 1…
Despite being a subject of intense research and exclusive attention over the past several decades, hydrogen in the weldments of high strength steels continues to seriously limit the performance of the components and confounds the quantitative component prognosis. More than 1500 studies in the literature have reported…
The structural changes of a (111) oriented CeO2 film grown on a Si(111) substrate covered with a hex-Pr2O3(0001) interface layer due to post deposition annealing are investigated. X-ray photoelectron spectroscopy measurements revealing the near surface stoichiometry show that the film reduces continuously upon extende…
Multiphoton and electron microscopic analyses show that acido-soluble collagen I prepared in 5 mM acetic acid (pH 3.5) at concentration above 45 mg mL−1 spontaneously generates liquid crystal phases mimicking plywood organization found in cornea tissues. Those organizations extend for several hundred micrometers. Tran…
Zn–Al–In layered double hydroxides (LDHs) are synthesized by a hydrothermal method and investigated as anode materials for Ni–Zn secondary batteries for the first time. The Fourier transform infrared spectra (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM)…
In this study, the wear mechanism of CBN inserts while face milling of aluminum-grey cast iron engine block was investigated by means of Scanning Electron Microscopy (SEM). It was shown that the thermal cracking constitutes the main wear mechanism. The Finite Element Method (FEM) was utilized to simulate the face mill…
The influence of temperature (20–80°C) on the electrochemical behaviour of passive films anodically formed on UB6 stainless steel in phosphoric acid solution (5.5 M H 3 PO 4 ) has been examined by using potentiodynamic curves, electrochemical impedance spectroscopy, and Mott-Schottky analysis. UB6 stainless steel in c…
Spiropyran (SP) is an attractive molecular platform for the design of fluorescent OFF-ON probes for the detection of cations and anions operative on a ring-opening/closing mechanism. By incorporating a benzimidazole moiety at the ortho-position of the oxygen atom of the pyran unit, a ratiometric fluorescent probe in t…