Materials Literature
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Understanding of sputtering by ion bombardment is needed in a wide range of applications. In fusion reactors, ion impacts originating from a hydrogen-isotope-rich plasma will lead, among other effects, to sputtering of the wall material. To study the effect of plasma impurities on the sputtering of the wall mixed mate…
Click chemistry has been successfully extended into the field of molecular design of novel amphiphatic adducts. After their syntheses and characterizations, we have studied their aggregation properties in aqueous medium. Each of these adducts forms stable suspensions in water. These suspensions have been characterized…
Abstract This article presents results on the dynamic mechanical properties of PP‐SiO 2 nanocomposites, with nanosilica contents of 1, 3, and 5% by weight, at various strain rates using a Split Hopkinson Pressure Bar (SHPB) apparatus. The specimens were prepared using a hot compression technique. The dynamic mechanica…
We demonstrated thermal transitions and physical gelation of binary ionic salts through interionic interactions, which consist of pyrrolidinium-N-propanesulfonate zwitterionic compound (PyrZIC) and lithium bis(trifluorosulfonyl)imide (LiTFSI). The transition behaviors of binary ionic gels were attributed to conformati…
The crystalline and defect structure of epitaxial hexagonal RE x Mn y O 3 (RE = Er, Dy) films with varying cationic composition was investigated by X-ray diffraction and transmission electron microscopy. The films are composed of a strained layer at the interface with the substrate and of a relaxed layer on top of it.…
Quasielastic neutron scattering, x-ray diffraction measurements, and fully atomistic molecular dynamics simulations have been performed on poly(vinylpyrrolidone) homopolymer above its glass transition temperature. A "prepeak" appears in the x-ray diffraction pattern that shows the typical features of a first amorphous…
Abstract Completely biodegradable composites were prepared using modified wheat protein isolate (WPI) as matrix and the uniaxial natural fabric Hildegardia Populifolia as reinforcement. The WPI was cross‐linked with glutaraldehyde in the presence of glycerol plasticizer. These polymer composites were subsequently subj…
Anhydro-N-acetylmuramic acid kinase (AnmK) catalyzes the ATP-dependent conversion of the Gram-negative peptidoglycan (PG) recycling intermediate 1,6-anhydro-N-acetylmuramic acid (anhMurNAc) to N-acetylmuramic acid-6-phosphate (MurNAc-6-P). Here we present crystal structures of Pseudomonas aeruginosa AnmK in complex wi…
Der Katalysatorträger 3DOM LaFeO3 enthält hoch geordnete Makroporen, die über kleine Fenster miteinander verbunden sind. Entsprechende Goldkatalysatoren weisen einerseits einen guten Kontakt durch den makroporösen Träger und andererseits hoch aktive Goldcluster als Zentren für die O2-Aktivierung auf und ergeben hervor…
The effects of the polyhedral oligomeric silsesquioxanes compound (3, 3, 3-trifluoropropyl)8Si8O12 (FP-POSS) on the elastic properties of poly(vinylidene difluoride) (PVDF) are investigated using molecular dynamics (MD) simulations. The volume–temperature properties and elastic constants for four different systems (PV…
Dehydroquinate dehydratase (DHQD) catalyzes the third step in the biosynthetic shikimate pathway. We present three crystal structures of the Salmonella enterica type I DHQD that address the functionality of a surface loop that is observed to close over the active site following substrate binding. Two wild-type structu…
A combined hydrogen storage system of Ca(BH 4 ) 2 /[C(NH 2 ) 3 ] + [BH 4 ] − (GBH) complexes is reported. By a short time ball milling of Ca(BH 4 ) 2 and GBH, a new composite of Ca(BH 4 ) 2 /GBH complex was produced. It was found that the newly formed composite exhibits a significant improvement of dehydrogenation, wh…
We study the scaling properties of magnetic minor hysteresis loops in a polycrystalline dysprosium metal, varying temperature and magnetic-field amplitudes. We observe irreversibility-related hysteresis loss in the helical antiferromagnetic phase, which is related with remanent flux density as a power law with the sam…
Abstract The water absorption characteristics of pineapple leaf fiber (PALF)/glass fiber (GF) hybrid polyester(PER) composites, and chemically modified PALF/polyester composites were evaluated by immersion in distilled water at 28, 60, and 90°C. The diffusion properties of the intimately mixed (IM) and the layered hyb…
The synthesis of the first fully conjugated tetrathiafulvalene-tetracyano-p-quinodimethane ((TTF)-TCNQ)-type system has been carried out by means of a Julia-Kocienski olefination reaction. In particular, a tetracyanoanthraquinodimethane (TCAQ) formyl derivative and two new sulfonylmethyl-exTTFs (exTTF = 2-[9-(1,3-dith…
Growing laser damage sites on multilayer high-reflector coatings can limit mirror performance. One of the strategies to improve laser damage resistance is to replace the growing damage sites with predesigned benign mitigation structures. By mitigating the weakest site on the optic, the large-aperture mirror will have…
Silica nanoporous templates from poly(1,4-isoprene)-block-polystyrene-block-poly(2-vinyl pyridine) (IS2VP) were prepared. The films of IS2VP spin-coated from toluene showed a dimple-type structure with short-range lateral order. When the films were exposed to a mixed solvent vapor of toluene/hexane, a highly ordered a…
Abstract We have demonstrated a flexible method for preparing Cu 2 ZnSnS 4 (CZTS) nanocrystals by use of zinc ethylxanthate (Zn(ex) 2 ) and copper ethylxanthate (Cu(ex) 2 ). TEM, SEM, XRD, UV–vis, EDS, XPS and TG‐DTA indicate that the CZTS nanocrystals have been successfully synthesized. As air‐stable molecular precur…
We estimate the size of mechanostability for 318 multidomain proteins which are single-chain and contain up to 1021 amino acids. We predict existence of novel types of mechanical clamps in which interdomain contacts play an essential role. Mechanical clamps are structural regions which are the primary source of a prot…
In this paper we investigated, by means of combined neutron and X-ray synchrotron diffraction, the structural properties of the BaCe 0.85- x Zr x Y 0.15 O 3-δ solid solution as a function of Zr-doping (0.1 ≤ x ≤ 0.4) and temperature. Compositions within this system have been proposed as electrolytes for intermediate t…