Materials Literature
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Due to their porous structure, angora rabbit fibers make for some of the highest quality wool. The application of these fibers on a technical scale is not feasible due to their limited availability and high price. Here, a robust fiber preparation method is reported based on an unusual spinning process, where a non‐equ…
Förster energy transfer plays an important role in spectroscopic rulers, photovoltaics and solid-state light emission, and here is a novel way of controlling it. Using a colloidal quantum dot bilayer system, it is possible to change the transfer rate while maintaining a constant efficiency. The key is a thermal excito…
The long-term stability of quantum dot (QD)-based devices under harsh environmental conditions has been a critical bottleneck to be resolved for commercial use. Here, we demonstrate an extremely stable QD/alumina/polymer hybrid structure by combining internal atomic layer deposition (ALD) infilling with polymer encaps…
Surface oxide layers were formed within crevices of Type 316L (UNS S31603) stainless steels in pure water at 288°C and 8 MPa. Cross-sectional structures of the surface oxides were analyzed using transmission electron microscopy. In the condition of dissolved oxygen concentration of 2 ppm, the properties of the surface…
Stauroneis lacusvulcani sp. nov. is described from two small volcanic lakes in northeastern China. The morphology of S. lacusvulcani is illustrated with light and scanning electron micrographs and discussed in comparison with several species of the Stauroneis gracilior group. S. lacusvulcani can be distinguished by th…
We investigate the magnetoresistance (MR) effect in n-doped InAs and InAs/metal hybrid devices with geometries tailored to elucidate the physical mechanism and the role of geometry in the MR. Despite the isotropic Fermi surface in InAs, we observe a strong intrinsic MR in the InAs epilayer due to the existence of a su…
We determine the optimal thicknesses for which omnidirectional reflection from generalized Fibonacci quasicrystals occurs. By capitalizing on the idea of wavelength- and angle-averaged reflectance, we assess in a consistent way the performance of the different systems. Our results indicate that some of these aperiodic…
We calculate the dynamical polarization function and solve a self-consistent gap equation in the random phase approximation in undoped ABC-stacked $n$-layer graphene. We find that the gap is maximal in trilayer graphene and decreases monotonously for $n\ensuremath{\ge}4$ because the effects of screening in the gap equ…
The use of in situ time-resolved dispersive X-ray absorption spectroscopy (DXAS) to monitor the formation of Cu2(OH)3Cl particles in an aqueous solution is reported. The measurements were performed using a dedicated reaction cell, which enabled the evolution of the Cu K-edge X-ray absorption near-edge spectroscopy to…
Cu nanoparticles (NPs) were fabricated in silica by 45 keV Cu ion implantation at a fluence of 1.0 × 10(17) cm(-2) and were then subjected to implantation of 50 keV Zn ions at fluences of 1.0 × 10(16), 5.0 × 10(16), and 10.0 × 10(16) cm(-2), respectively. Our results clearly show that post Zn ion implantation could si…
Photo-induced reversible sorption of azo dyes on titania xerogels is observed, which is based on the photo-switchable change of the acetylacetonato anchors in the xerogels. The photoisomerization of azo compounds that regulates many gate-keeper-like host-guest interaction systems is excluded as the determinant.
Using realistic multiorbital tight-binding Hamiltonians and the $T$-matrix formalism, we explore the effects of a nonmagnetic impurity on the local density of states in Fe-based compounds. We show that scanning tunneling spectroscopy (STS) has very specific anisotropic signatures that track the evolution of orbital sp…
Among isolates of the eubacteria Brevundimonas bullata, Sphingomonas rhizogenes, Agrobacterium tumefaciens, Bacillus simplex, Acinetobacter johnsonii, Methylobacterium adhaesivum , and Deinococcus aquaticus isolated from the bottom layer on the medium, where the only source of organic matter was hydrolysate from diato…
Slabs of materials with near-zero permittivity display enhanced nonlinear processes. We show that field enhancement due to the continuity of the longitudinal component of the displacement field drastically enhances harmonic generation. We investigate the impact of losses with and without bulk nonlinearities and demons…
Multichannel transition emissions in Pr 3+ -doped fluorotellurite (4BaF 2 –4AlF 3 –16BaO–6La 2 O 3 –70TeO 2 , BABLT) glasses have been quantitatively characterized. Broadband ∼1.48 µ m near-infrared (NIR) emission due to 1 D 2 → 1 G 4 transition covering a 1.28–1.68 µ m wavelength region possesses a full-width at half…
Recently, there has been an increased need for highly sensitive solid-state imaging devices to develop high-resolution and high-speed image sensors. Crystalline selenium is a suitable material for a photosensitive layer because of its high absorption coefficient in the visible light region. In our experiment with an i…
The acid-base and aggregation behavior of water soluble meso-tetrakis(p-sulfonato-phenyl)N-confused porphyrin was explored using UV-visible spectroscopy. Stepwise protonation events were observed in acidic media with pK 4 = 5.8 and pK 3 = 7.7, and spectroscopic evidence suggests the formation of polymeric aggregates a…
Glasses with the mol% composition 52.6 SiO2·18.7 Al2O3·14.3 MgO·7.7 TiO2·4.7 B2O3·2.0 CaO were crystallized using electrochemically induced nucleation. During this process, a voltage is applied between a platinum wire and a platinum crucible containing the melt heated to 1330 °C. At the platinum wire, which acts as th…
Abstract The effects of nanometer calcium carbonate content and tensile rate on the tensile properties of the filled polycaprolactone (PCL) composites were investigated. There was a certain reinforcing effect of the filler on the PCL resin. The tensile modulus increased nonlinearly, and the tensile strength also incre…
Ca(Al/Si) 2 N 2 (N 1-x O x ):Eu 2+ phosphors (CASNO) provide two coordinated modes for Eu ions, namely EuN4O and EuN5, resulting in two-peak emissions which are expressed by two fitted Gaussian peaks in the emission bands of CASNO. The two-peak emission behaviors of CASNO are examined by analysis of the decay curve of…