Materials Literature
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For being a useful contribution to the understanding of the properties of solid foams, the characterization of the structure of solid foams has to be performed at different scales. The microstructure of the solid part of the foams has to be analyzed. For this, standard SEM observations are often used. The most importa…
The fluorescence of thin films of a diimine-substituted phenyleneethynylene compound can be efficiently quenched by nitroaromatic vapors, which is not the case for the unsubstituted parent compound. Thin-film porosity is usually considered to be an essential factor for efficient quenching, but in the present case the…
Electrochemical dealloying of Pt–Si produces Pt films with hierarchical pore structure and superior performance in butadiene hydrogenation.
Abstract The development of non-toxic, biodegradable vegetable oils as alternatives to petroleum derived quenchants and their influence on residual stresses and dimensional changes of AISI 4140 and AISI H13 modified C-ring steel test specimens is discussed. The C-ring test specimens were quenched in 6 different vegeta…
For practical application, the functional piezoelectric film in microelectromechanical systems should meet the requirement of physical properties, as well as the mechanical properties. In this article, 0.5 Ba ( Ti 0.8 Zr 0.2 ) O 3 –0.5( Ba 0.7 Ca 0.3 ) TiO 3 (0.5 BZT –0.5 BCT ) thin films with varied properties were p…
X-ray diffraction rocking-curve measurements were performed on tetragonal hen egg white (HEW) lysozyme crystals grown with and without the application of an external alternating current (AC) electric field. Analysis of the full width at half-maximum (fwhm) of the rocking curves indicated that misorientation between su…
Serine hydroxymethyltransferases (SHMTs) play an essential role in one-carbon unit metabolism and are used in biomimetic reactions. We determined the crystal structure of free (apo) and pyridoxal-5'-phosphate-bound (holo) SHMT from Methanocaldococcus jannaschii, the first from a hyperthermophile, from the archaea doma…
We present a study of the structure and rheology of mixed suspensions of montmorillonite clay platelets and Ludox TMA silica spheres at pH 5, 7, and 9. Using cryogenic transmission electron microscopy (cryo-TEM), we probe the changes in the structure of the montmorillonite suspensions induced by changing the pH and by…
High thermal conductivity fillers of boron nitride (BN) and vapor‐grown carbon fiber (VGCF) were used alone or incorporate to prepare polypropylene (PP) composites. The effects of filler content, particle size and shape, and single vs. hybrid BN/VGCF fillers were investigated with respect to the thermal conductivity o…
The interaction of H2 and O2 molecules in the presence of nitrogen-doped graphene decorated with either a palladium or gold atom was investigated by using density functional theory. It was found that two hydrogen molecules were adsorbed on the palladium atom. The interaction of these adsorbed hydrogen molecules with t…
In this paper, we present the analysis of the properties of direct current (dc) magnetron sputtered Ti thin film that affect the morphology of TiO2nanotubes synthesized by electrochemical anodization. Si wafer with thermally grown silicon dioxide was used as the substrate for deposition of Ti films. By varying the pro…
Peptidoglycan O-acetylesterase (Ape1), which is required for host survival in Neisseria sp., belongs to the diverse SGNH hydrolase superfamily, which includes important viral and bacterial virulence factors. Here, multi-domain crystal structures of Ape1 with an SGNH catalytic domain and a newly identified putative pep…
Here, a one step in situ synthesis of silver nanoparticles on polyamide fabric was successfully performed using stannous chloride (SnCl2) as a reducing and cetyltrimethylammonium bromide as a stabilizing agent. The treated fabrics were characterized with X-ray diffraction, field emission scanning electron microscope,…
A facile, and cost-efficient ultrasonication-assisted exfoliation strategy is proposed to fabricate GO sheets with various sizes. Just by controlling the original GO sizes as basic building blocks in deionized water, various aligned architectures, such as films, microfibers, submicron rods, and nanorods, are self-asse…
Highly ordered binary superlattices of 1D nano-objects are demonstrated for hydrophilically functionalized single-walled carbon nanotubes (p-SWNTs) and cylindrical surfactant micelles. In their Communication on page 12548 ff., S.-M. Choi et al. show that when p-SWNTs are added into a hexagonally packed cylindrical mic…
This paper presents a simple and effective method to fabricate water-soluble two-dimensional (2D) conductive poly(3,4-ethylenedioxythiophene):poly (sodium 4-styrenesulfonate) (PEDOT:PSS) nanosheets. Linear PSS is water-soluble and exhibits a quasi 1D structure in the dilute solution. Addition of 3,4-ethylenedioxythiop…
Structurally modified nucleosides are central players in the field of nucleic acid chemistry. Adenine-thymine (AT) pyrimido[4,5-d]pyrimidine furanosyl and pyranosyl arabinonucleosides have been synthesized for the first time. Single-crystal X-ray diffraction analysis reveals novel base pairs that, in synergy with the…
A chitosan/polypyrrole composited fiber as bio-compatible materials for artificial muscles is investigated. The chitosan/polypyrrole fiber (CPF) is fabricated by in-situ chemical polymerization of pyrrole monomer solution using FeCl3 as an oxidant. The electrical resistivity of the fiber is changed according to the st…
Four ring-shaped silafluorene-containing compounds (1-4) were synthesized and characterized as potentially promising monomers for fluorescent polymers. Their optical properties in solution and solid state (thin film and powder) were studied. These compounds have low quantum yields in solution (Φ(fl)=0.13-0.15) with fl…
Periodic hexagonal unit cell silicon nanohole (SiNH) structures with different structural dimensions have been fabricated using polystyrene spheres and investigated in terms of their microstructures and optical reflectance. Compared with a planar Si wafer, such structures exhibit much lower reflectance due to the enha…