Materials Literature
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The Hamaker constant between graphene oxide and silica, which quantifies the strength of van der Waals forces is determined, by mimicking a “vacuum spacer” in an atomic force microscopyforce tudy. It is demonstrated that, a 2D spacer is expected to yield an accurately defined separation, owing to the high atom density…
ABSTRACT Pyrolysin from the hyperthermophilic archaeon Pyrococcus furiosus is the prototype of the pyrolysin family of the subtilisin-like serine protease superfamily (subtilases). It contains four inserts (IS 147 , IS 29 , IS 27 , and IS 8 ) of unknown function in the catalytic domain. We performed domain deletions a…
Surface modification of carbon nanotubes (CNTs) with long polymer chains has attracted great attention since it promises high performance nanomaterials. However, due to the chemical inertness of both polyethylene (PE) and CNT, it still remains a challenge to covalently conjugate CNT with PE in a facile manner. In this…
Hybrid composites with highly ordered structures show promise for applications in various fields and thus there is great interest in their fabrication. In this context, Janus nanoparticles (JNPs) are synthesized with the aim of further incorporating them into polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) block c…
Porous and spongy superhydrophobic silicon-type gels monoliths have been fabricated by a facile method.
Bilayer graphene under a magnetic field has an octet of quasidegenerate levels due to spin, valley, and orbital degeneracies. This zero-energy Landau level is resolved into several incompressible states whose nature is still elusive. We use a Hartree-Fock treatment of a realistic tight-binding four-band model to under…
Invisibility in a diffusive-light-scattering medium has been recently demonstrated by employing a scattering-cancellation core-shell cloak. Unlike nondiffusive cloaks, such a device can be simultaneously macroscopic, broadband, passive, polarization independent, and omnidirectional. Unfortunately, it has been verified…
Stimuli-responsive metal-organic frameworks (MOFs) and other framework materials exhibit a broad variety of useful properties, which mainly stem from an interplay of strong covalent bonds within the organic linkers with presumably weak van der Waals (vdW) interactions which determine the overall packing of the framewo…
Epitaxial multilayers and superlattice (SL) structures are gaining increasing importance as they offer the opportunity to create artificial crystals with new functionalities. These crystals deviate from the parent bulk compounds not only in terms of the lattice constants but also in the symmetry classification, which…
Most photoelectric and imaging methods for yarn hairiness measurements often provide underestimated data of hairy fibers measured from light projection, which ignores the spatial orientations and shapes of protruding fibers. In this project, a three-dimensional (3D) system was developed to detect hairy fibers from mul…
Erbium complexes with a fluorinated organic core shell linked to a hydrogen-containing shell, have been synthesized using the click reaction between erbium( <sc>iii</sc> ) bis(perfluoro-4-azidophenyl)phosphinate and a series of alkynes.
New thermoplastic segmented polyurethanes were obtained by a one-step melt polyaddition using 40, 50 and 60 mol% poly(hexane-1,6-diyl carbonate) diol of $$\bar{M}_{n} = 860$$ g mol−1, 1,1′-methanediylbis(4-isocyanatobenzene) and 2,2′-[sulfanediylbis(benzene-1,4-diyloxy)]diethanol, 2,2′-[oxybis(benzene-1,4-diylsulfaned…
In this paper, the polystyrene–silica hybrid particles were prepared by mechanochemical method. The surface activity index of the hybrid particle was prepared by mechanochemical method, and the contact angle is 128.8°, which indicates that it has the very good hydrophobicity. We can observe that the surface of the mod…
cat)]. Each of the new compounds represents a rare example of a Ru complex in an oxygen-rich ligand field, which may serve as a molecular model for heterogeneous catalysts comprising noble metal atoms dispersed on metal oxide supports.
In this work, the interaction between dehydroindigo (an intermediary oxidized form of indigo) and Laponite clay was investigated. Dehydroindigo (DHI) has been detected when indigo is adsorbed by clay minerals, but it is relatively unstable and in the presence of water it turns back into indigo. It is, therefore, impor…
Abstract In this study, PP-based composites reinforced were produced by using three injection pressures I P (50, 55, 60 MPa), three injection temperatures I T (210, 220, 230 °C), three holding pressures H P (35, 40, 45 MPa), three reinforcement rates R r (5, 10, 15 wt.-%) and three reinforcement sizes R s (44–100, 101…
Carbon fiber-reinforced resin mineral composites have been fabricated under various postcure temperatures. The effects of postcure temperature and fiber dosage on the thermal expansion behaviour of resin mineral composite have been systematically investigated. The resin matrix postcured at 110℃ shows the lowest coeffi…
ligands are readily displaced. Despite the presence of labile axial ligands, compounds 2-5 remain high spin with an S = 3/2 ground state as determined by EPR spectroscopy.
Golden clusters have been analyzed and categorized using the series method. They have been found to be intensely capped. The complexity of capping is likely responsible for the unique shapes of clusters. The predicted structures of the golden clusters with one or two nuclear indices have been found to be in agreement…
The self-assembly behavior of a molecule composed of an azobenzene segment, carboxylic-acid group and flexible alkyl chains (denoted by ABA11) was studied as an extension of our proceeding work. We have previously reported that in DMSO solution ABA11 self-assembled into nanotubes starting from nanosheets and experienc…