Materials Literature
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Atom-probe tomography analyses of a nominally 6.25% Cr-doped In2O3 thin film, prepared by ceramic synthesis e-beam evaporation, has been performed. It has been shown that there is substantial inhomogeneity of Cr throughout the film (1−8% distribution). The Cr-doped In2O3 film does not display room temperature ferromag…
Abstract A series of linear polyurethane (PU) elastomers containing various amounts (ca. 2–10 wt%) of a diol‐functionalized polyhedral oligomeric silsesquioxane (diolPOSS) were synthesized from organic solvent dispersions. Fourier transform infrared spectroscopy was used to characterize the chemical structure of the d…
Dynamic responses of various types of spin-cycloidal domain walls (DWs) have been investigated for the multiferroic compound DyMnO${}_{3}$ by the dielectric measurements. By exploiting the multiferroic nature of this material, we were able to drive the spin-cycloidal DWs by an electric field and hence elucidate the dy…
We explore the excited state energy landscape of small polyhedral zinc sulfide clusters (Zn(4)S(4) and Zn(6)S(6)) using time-dependent density functional theory and correlated wave function based methods. We predict the optical absorption and photoluminescence spectra of the polyhedral clusters and demonstrate that, u…
Neste trabalho foi analisada a influência da sequência de mistura do compósito de polipropileno (PP) com 10% em volume de fibras de bananeira (FB) utilizando polipropileno enxertado com anidrido maleico (PP-MA) como agente de acoplamento. As propriedades térmicas, mecânicas, absorção de água e morfologia dos compósito…
Blendas de poliamida 6 (PA6) com acrilonitrila-butadieno-estireno (ABS) foram preparadas em uma extrusora de rosca dupla, utilizando-se o copolímero estireno-anidrido maleico (SMA), com 7% de anidrido maleico, como compatibilizante. O efeito de três sequências de mistura na microestrutura e propriedades das blendas fo…
Paper has a visible market-share in hygiene products either in the form of personal hygiene or as food packaging. The designation “hygiene”, though it suggests cleanliness, does not imply antibacterial properties; rather it can be stated that hygiene products do not initiate microorganism growth. Antibacterial product…
This paper reports the preparation of polymeric surfactants (HPSO) via a two-step synthetic procedure: polymerization of soybean oil (PSO) in supercritical carbon dioxide followed by hydrolysis of PSO (HPSO) with a base. HPSO was characterized and identified by using a combination of FTIR, (1)H NMR, (13)C NMR, and GPC…
Nanotechnology has the potential to revolutionize the management and treatment of cardiovascular disease. Controlled drug delivery and nanoparticle-based molecular imaging agents have advanced cardiovascular disease therapy and diagnosis. However, the delivery vehicles (dendrimers, nanocrystals, nanotubes, nanoparticl…
Oxygen vacancies play a role in various proposed degradation mechanisms of Pb(Zr x Ti 1− x )O 3 (PZT)‐based applications. Hence, 18 O tracer diffusion experiments investigated by time‐of‐flight‐secondary ion mass spectrometry were used in order to evaluate oxygen diffusion in donor‐doped polycrystalline PZT. The PZT s…
The effects of surface roughness on secondary electron emission (SEE) are investigated for copper. The surface of the copper samples was modified using a high-power neodymium-doped yttrium aluminum garnet laser, where the degree of surface modification depended on the duration and intensity of the laser exposure. Four…
Chitosan (CTS) is biocompatible, biodegradable, and can be formed into 3D porous structures for bone tissue engineering applications. Although studies have reported on the effects of molecular weight (MW) on CTS physicochemical properties, studies evaluating CTS biological property relationships often do not account f…
A comprehensive study using liquid chromatography electrospray ionization multistage mass spectrometry (LC-ESI MS(n)) was performed to get detailed structural information on poly(butylene adipate-co-butylene terephthalate) co-polyester and its product of partial degradation. LC-MS and LC-MS(n) identified the existence…
The novel thiol bridging "staple motif RS-Au-SR" discovered at the Au-thiolate interface has tremendously advanced the structural understanding of monolayer protected Au clusters (AuMPCs). In this paper, multidentate dithiol ligands are introduced into the monolayer of the Au clusters. The impacts of dithiols on the A…
Here we report on controlling the effective hybridization and charge transfer of rare-earth elements inside a carbon nanotube (CNT) nanoreactor. The tubular space inside CNTs can encapsulate one-dimensional (1D) crystals such as ErCl${}_{3}$, which we have used as a starting material. Applying a thermochemical reactio…
CdSe semiconductor nanocrystal quantum dots are assembled into nanowire-like arrays employing microtubule fibers as nanoscale molecular "scaffolds." Spectrally and time-resolved energy-transfer analysis is used to assess the assembly of the nanoparticles into the hybrid inorganic biomolecular structure. Specifically,…
Understanding the mechanisms of clustering in colloids, nanoparticles, and proteins is of significant interest in material science and both chemical and pharmaceutical industries. Recently, using an integral equation theory formalism, Bomont et al. [J. Chem. Phys. 132, 184508 (2010)] studied theoretically the temperat…
Carbon nanotubes (CNTs) constitute a novel class of nanomaterials with remarkable applications in diverse domains. However, the main intrincsic problem of CNTs is their insolubility or very poor solubility in most of the common solvents. The basic key question here is: are carbon nanotubes dissolved or dispersed in li…
Thermal-driven cis-to-trans supramolecular isomerization without losing crystallinity was first discovered in a two-dimensional coordination polymer system of [FeII(2,4-bpt)2]⋅xH2O (2,4-bpt=3-(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole), confirmed by PXRD, DSC, IR, EA, and Raman spectra. Gloriously, both samples are spin…
In searching appropriate candidates of magnetic semiconductors compatible with mainstream Si technology for future spintronic devices, extensive attention has been focused on Mn-doped Ge magnetic semiconductors. Up to now, lack of reliable methods to obtain high-quality MnGe nanostructures with a desired shape and a g…