Materials Literature
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Natural materials such as nacre exhibit a high resistance to crack propagation, inspiring the development of artificial composites imitating the structure of these biological composites. We use a phase field approach to study the role played by the elastic modulus mismatch between stiff and soft layers on crack propag…
Nanowalls are novel nanostructures whose networked morphology holds potential for applications such as solar cells and gas sensors. The realization of such nanowall-based devices depends directly on a comprehensive understanding of the nanowall growth, namely, its competition with nanowire growth and the role of seed…
We demonstrate the use of "click" chemistry to form electrochemically and photoelectrochemically active molecular interfaces to SnO(2) nanoparticle thin films. By using photochemical grafting to link a short-chain alcohol to the surface followed by conversion to a surface azide group, we enable use of the Cu(I)-cataly…
Abstract The crystal and molecular structures of the rare earth carbonates with the general formulae [C(NH 2 )] 3 [Ln(CO 3 ) 4 (H 2 O)] · 2H 2 O (where Ln = Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Gd 3+ , Tb 3+ ) and [C(NH 2 )] 3 [Ln(CO 3 ) 4 ] · 2H 2 O (where Ln = Y 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , Yb 3+ , Lu 3+ ) were d…
UV absorption spectra of the Lindqvist polyoxometalate [W(6)O(19)](2-) were predicted by relativistic time-dependent density functional theory with several combinations of density functional and basis set. Hybrid functionals with frozen-core Slater basis sets were found to provide the best agreement with experiment wh…
Regenerated cellulose fibers from bagasse and wood were produced under various processing conditions using the ionic liquid 1-butyl-3-methylimidazolium chloride (BMIMCl) as a solvent. Two different ionic liquid solutions were prepared with 6 wt% of bagasse cellulose and 6 wt% of wood cellulose. The solutions were extr…
The defect structure of a homoepitaxial thin film of SrTiO3 containing excess Ti grown by pulsed laser deposition is investigated. The Sr/Ti ratio of the film is controlled to possess a slight excess of Ti by tuning the laser fluence. High-resolution transmission electron microscopy and electron energy loss spectrosco…
This study evaluated the potential of glauconitic sandstone as a fertilizer for supplying potassium to plants. The glauconite sandstone (Maraveh, Iran), as analyzed by X-ray fluorescence, was composed of 2.24% potassium oxide plus high contents of silicon, aluminum and ferric oxide. One-year old olive trees, Olea euro…
When a metal undergoes a transition to an insulator it will lose its electronic Fermi surface. Interestingly, in some situations a ``ghost'' Fermi surface of electrically neutral spin carrying fermions may survive into the insulator. Such a novel ghost Fermi surface has been proposed to underlie the properties of a fe…
This article presents a procedure of the activation of halloysite and a method of the synthesis of nucleus-sheath type filler. The effects of the nanoadditives obtained on the thermal properties, flammabilities and fire hazards of peroxide and sulfur vulcanizates of NBR and SBR rubbers, are discussed. Based on the tes…
Twenty crystal structures of the Ln(III)[15-MC(CuII(N)pheHA)-5](3+) complex, where pheHA = phenylalanine hydroxamic acid and where Ln(III) = Y(III) and La(III)-Tm(III), except Pm(III), with the nitrate and/or hydroxide anion are used to assess the effect of the central metal ion on the metallacrown structure. Each Ln(…
PURPOSE: To investigate the influence of N-acetylation of chitosan on the renal targeting. METHODS: Hydroxyethyl chitosans (HECs) with different N-acetylation degrees of 10.0%, 52.7%, and 81.8% (HECs-10, HECs-53, and HECs-82) were synthesized. Then, in vitro evaluations including cellular uptake and cytotoxicity were…
A series of commercial photochromic dyes was applied to polyester fabric as disperse dyes. The photocoloration properties of the dyed fabrics were investigated by applying techniques previously established in our laboratories using an independent source of ultraviolet irradiation and traditional colour measurement ins…
The development of chromophore-carbon nanotube hybrids requires efficient and accurate methods to investigate their photophysical properties. Using the ability of the fluorescence labeling of surface species (FLOSS) technique to determine the density of covalently attached dyes to the surface of single-walled carbon n…
A detailed study on the direct synthesis of biocompatible polyesters (e.g., PLA, PLGA or PCL) microcapsules and multifunctional microcapsules, which does not require any template and core removal, is presented. The technique is based on the modified self-emulsification process within the emulsion droplets by simply ad…
We present the modeling and measurements of microwave propagation in a coplanar waveguide over graphene in the range of frequencies 40 MHz-110 GHz, which suggest that graphene could work well in a very large bandwidth. Graphene is acting as a natural matching device because its equivalent resistance at these frequenci…
Introducing various pendant functional groups and building blocks of interest to polypeptides in a highly efficient, controlled manner is crucial to access polypeptide materials with desired structures and functions. In this study, we synthesized γ-(4-vinylbenzyl)-(L)-glutamate N-carboxyanhydride (VB-Glu-NCA), which w…
The technical performance of five selected commercial photochromic dyes applied by screen‐printing on textiles was evaluated using a colour measurement methodology that has previously been established and validated. The results of wash fastness assessments were distinctly unusual. With the selected spirooxazine dyes,…
We propose a homogeneous circular polarizer based on a bilayered chiral metamaterial with two enantiomeric wheel patterns. The transmitted field of an arbitrarily polarized incident wave through this bilayered structure is nearly circularly polarized with a circular polarization extinction ratio of more than 30 dB at…
Here we demonstrate and characterize the H-diffusion behavior around a screw dislocation in body-centered cubic (bcc) $\ensuremath{\alpha}$-Fe by performing path-integral molecular dynamics modeling and adopting an ab initio--based potential. Counterintuitively, our results indicate that the H diffusivity along the di…