Materials Literature
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Au clusters in the size range (1–8 nm), supported on MgO and TiO 2 , are studied at the atomic scale by High Resolution Transmission Electron Microscopy (HRTEM), in standard conditions and during cycles of gas treatments by environmental HRTEM. Their morphology, the structure of the interface with the substrate and th…
Degumming of pre-chlorite treated jute fiber was studied in this paper. The effects of sodium hydroxide concentration, treatment time, temperature, sodium silicate concentration, fiber-to-liquor ratio, penetrating agent TF-107B concentration and degumming agent TF-125A concentration were the process conditions examine…
In this paper we report the results obtained by an implementation and application of the simulated annealing optimization procedure to the exploration of the conformational space of small neutral and charged lithium clusters (Li(n)(q), n = 5, 6, 7; q = 0, +/-1) and of the bimetallic lithium/sodium clusters (Li5Na) in…
Cancer is a major public health problem worldwide. Some of the key challenges in cancer are early detection, diagnosis, and targeted therapy. Most of the patients are usually diagnosed in the late stage of the disease causing immunity to therapeutic intervention. Another major challenge in the therapeutic intervention…
Abstract Processing Silk Fibroin (SF) with electrospinning (ES) offers a very attractive opportunity for producing a variety of 2D and 3D matrices with great potential for tissue regeneration and repair due to the superior biocompatibility and mechanical properties of SF. Different combinations of ES parameters were e…
Nano-crystals of ZnO, Eu3+ doped ZnO, and Li+, Eu3+ co-doped ZnO have been prepared by urea hydrolysis in ethylene glycol medium at 150 degrees C. Ethylene glycol acts as capping agent for nanoparticles. Three colors 437 (blue), 540 (green) and 615 nm (red) from 2 at.% Li+ and 5 at.% Eu3+ co-doped ZnO have been observ…
The overall conductivity of SWNT networks is dominated by the existence of high resistance and tunneling/Schottky barriers at the intertube junctions in the network. Here we report that in situ polymerization of a highly conductive self-doped conducting polymer "skin" around and along single stranded DNA dispersed and…
Two papers in this issue report important developments in the field of inorganic nanomaterials. Chen and O'Brien discuss self-assembly of semiconductor nanocrystals into binary nanoparticle superlattices (BNSLs). They show that simple geometrical principles based on maximizing the packing density can determine BNSL sy…
A hydrothermal nanoparticle-plating technique has been employed in order to grow a layer of CoSb3 nanoparticles on the surface of La0.9CoFe3Sb12 bulk matrix grains. The nanoparticles have a typical size of 30–40 nm while the nano-layer can be up to several hundreds of nanometer thick. The nanoparticle layer, which res…
A simple solid-state method to synthesize polyaniline dendrites without using any surfactant and organic acid has been demonstrated for the first time. XRD, FTIR and TGA analyses indicate the dendrites are doped emeradaline salt with good crystallinity. The growth mechanism of the branched nanofibers in solid-state re…
Amyloidoses are a group of diseases including neurodegenerative diseases like Alzheimer's disease and also type II diabetes, spongiform encephalopathies and many others, believed to be caused by protein aggregation and subsequent amyloid fibril formation. However, occasionally, living organisms exploit amyloid fibril…
As argilas são materiais muito usados e que atualmente apresentam inúmeras aplicações devido as interessantes propriedades que apresentam. A modificação superficial de argilas é uma área que tem recebido bastante atenção dos pesquisadores porque por meio dos diversos tipos de modificação é possível a preparação de nov…
Hydrogen desorption and absorption properties of two destabilized systems, 6LiBH 4 + CeH 2 + 0.2TiCl 3 (Ce system) and 6LiBH 4 + CaH 2 + 0.2TiCl 3 (Ca system), have been characterized. The theoretical hydrogen capacity is 7.39 and 11.67 wt % for the Ce and Ca systems, respectively. Both systems follow the thermodynami…
This paper firstly reports key factors which are to be necessarily considered for the successful two-bit (four-level) cell operation in a phase-change random access memory (PRAM). They are 1) the write-and-verify (WAV) writing of four-level resistance states and 2) the moderate-quenched (MQ) writing of intermediate re…
Abstract Sulfur nanoparticles were synthesized from hazardous H 2 S gas using novel biodegradable iron chelates in w/o microemulsion system. Fe 3+ –malic acid chelate (0.05 M aqueous solution) was studied in w/o microemulsion containing cyclohexane, Triton X-100 and n -hexanol as oil phase, surfactant, co-surfactant,…
The nonlinear radial oscillations of bubbles that are encapsulated in an elastic shell are investigated numerically subject to three different constitutive laws describing the viscoelastic properties of the shell: the Mooney-Rivlin (MR), the Skalak (SK), and the Kelvin-Voigt (KV) models are used in order to describe s…
Purification of carbon nanotubes (CNTs) is a very actively discussed topic in contemporary CNT literature. To a large extent, impurities embedded in CNTs influence the physical and chemical characteristics of the CNTs. Different purification methods yield different CNT characteristics and may be suitable for the produ…
Abstract The pH of aqueous bentonite suspensions is known to be influenced by carbonates present even in minor amounts. On the other hand, at high solid:liquid ratios (at standard pH measurement conditions: 2% w/w suspension), the type of exchangeable cation in the smectite is also known to determine pH (particularly…
The classic series of duplex stainless steels shows very high corrosion resistance and can be used for very demanding applications. A new lean duplex steel, LDX 2101® (EN 1.4162, UNS S32101), has been developed with corrosion resistance on a par with standard austenitic grades. Application areas include: structural co…
Duplex stainless have always been an exiting area of interest for researchers, stainless steel producers, fabricators and end users. They present very diversified technical challenges and simultaneously attractive in‐service properties at excellent cost/properties ratios, particularly in critical markets including oil…