Materials Literature
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Metalorganic chemical vapor deposition (MOCVD) was used to grow crystalline GaN on a Ga 2 O 3 interlayer deposited by pulsed laser deposition. The Ga 2 O 3 interlayer situated between undoped GaN (u-GaN) and sapphire can be etched out during the chemical lift-off process. A ( ) oriented β-Ga 2 O 3 thin film was first…
Bi1−xSbxnanocrystals were prepared by a low temperature polyol synthesis process using PVP as a complexing agent as well as a capping agent in controlling crystal growth. This method allows for the preparation of phase pure, highly crystalline nanocrystals of 30–40 nm in diameter in large yield. The structural propert…
Cross-linking of polysaccharide electrospun constructs using currently available techniques results in poor scaffold structural stability. In general, cross-linked substrates lose their nanofibrous architecture within a short time under physiological conditions. In this study, we introduce an in situ cross-linking ele…
Abstract Three‐dimensional (3‐D) Monte Carlo simulation has been performed for predicting the percolation threshold in electrical conductivity of polymer composites filled with randomly oriented conductive particles of various morphologies. The conductive fillers like graphite nanoplatelets have been simulated as inte…
Porous hybrid multilayer films composed of cationic poly(allylamine hydrochloride) (PAH)- and anionic poly(acrylic acid) (PAA)-stabilized gold nanoparticles (AuNPs) (i.e., PAH-AuNPs and PAA-AuNPs) were prepared on indium tin oxide (ITO) electrodes using pH-controlled layer-by-layer (LbL) assembly method with subsequen…
1-(2-Naphthoyl)-3,3,3-trifluoroacetonate (NTA) functionalized SBA-15 mesoporous hybrid material (NTA-S15) was synthesized by co-condensation of modified NTA (denoted as NTA-Si) and tetraethoxysilane (TEOS) in the presence of Pluronic P123 surfactant as a template. Then, nicotinic acid (NA) was selected as the second l…
Size-selective pores in the shells of hollow polymer nanocapsules enable combined assembly and entrapment of molecules. Small building blocks enter the capsule through the pores. The assembled molecules, which are larger than the pores, remain entrapped in the nanocapsules. Porous nanometre-thin walls permit unhindere…
Two hydroxo-bridged complexes, {[Mn(III)(3-CH(3)O)salen](2)[Cr(III)(salen)(OH)(2)]}ClO(4)·6H(2)O (1) and {[Mn(III)(5-CH(3))salen](2)(OH)}ClO(4)·3H(2)O (2) [salen = N,N'-ethylenebis(salicylideneiminato) dianion], have been synthesized by the hydrolysis of the corresponding Mn(III)(Schiff-Bases) derivatives and [Cr(sale…
The production of rigid polyurethane foams is made varying the soy-based polyol percen- tage between 20 and 30% into the formulation. Four blocks of foam are obtained using two oleochemicals polyols from ethanol and ethylenglycol (with funcio- nalities of 2 and 6, respectively). The foams were characterized by thermal…
Publisher Summary Tyres are an essential part of the economy of every country that relies on vehicular and air transport to move people and goods. The management of post-consumer tyres is greatly influenced by environmental legislation at International, European Union (EU), and State levels. Each has had an important…
Purpose: The aim of the paper was to examine the effects of electron radiation on physicochemical properties of pristine poly(lactic acid) (PLA), or polylactide, and of polylactide containing a selected crosslinking agent. Design/methodology/approach: Samples to be examined were prepared in granulated forms or as moul…
Conventional CMOS devices are facing an increasing number of challenges as their feature sizes scale down. Graphene nanoribbon (GNR) based devices are shown to be a promising replacement of traditional CMOS at future technology nodes. However, all previous works on GNRs focus at the device level. In order to integrate…
The development of new photochemical tools, some synthesized by chemists and some provided by nature, is rapidly changing the way neurobiological research is performed in the modern laboratory. In Pho
In this paper are presented our research about the magnetic nanoparticles with potential applications in malignant tumors diagnostic: cobalt nanoparticles, cobalt-nickel nanoparticles and mixed oxide particles, i.e. magnetite nanoparticles. Cobalt and nickelcobalt nanoparticles have been prepared by co-reducing the co…
Organic photovoltaic cells (OPVs) with a highly conductive poly 3,4-ethylenedioxythiophene:poly styrenesulfonate (PEDOT:PSS) layer as an anode and that were modified with the addition of some organic solvents such as sorbitol (So), dimethyl sulfoxide (DMSO), N-methyl-pyrrolidone (NMP), dimethylformamide (DMF), and eth…
One hundred and fifty Saudi plants were collected from various regions of Saudi Arabia, tested for phytochemical constituents and screened for pharmacological and antimicrobial activities. The majority of the plants tested positive for the presence of alkaloids, flavonoids, tannins and sterols/triterpenes. Chloroform…
The inhibition effect of three amino acids (valine (val), alanine (ala) and glycine (gly)) on the corrosion of Cu10Ni alloy in sulfide-polluted salt water (3.5 % NaCl + 16ppm S2-) was studied using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM), s…
Polypropylene/wood flour composites were melting compounded in an internal mixer at 190°C and 60 rpm rotor speed and then samples were fabricated by injection molding. Effects wood flour content on the physical properties of composites was investigated. For this purpose, hardness, water absorption and thickness swelli…
BACKGROUND: Hemidesmus indicus R.Br. is a twining shrub commonly found in India, which was known to have wide pharmacological actions. 2-hydroxy-4-methoxy-benzoic acid (HMBA) and a number of pregnane glycosides were believed to be responsible for its various bioactivities. Until now, there are no reports regarding the…
Epilithic diatoms (Bacillariophycae) from streams in Ramsar, Iran Epilithic diatoms were identified from five small streams and one canal in Ramsar, northwest Iran. Atotal of 155 diatom taxa belonging to 37 genera were found and only two species remained unidentified (Fragilaria sp. and Nitzschia sp.). Achnanthes, Nit…