Materials Literature
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If some supercooled liquids are cooled further, they freeze into a specific medium state with both properties of liquid-like structure and solid-like hardness, so-called “glass.” The fact that dynamics freeze drastically when there is only a slight change in static structure remains a mystery in solid-state physics. R…
We have investigated the optical properties of colloidal seed-grown CdSe (seed)/CdTe (arms) nanotetrapods both experimentally and computationally. The tetrapods exhibit a type-II transition arising from electrons localized in the CdSe seed region and holes delocalized in the CdTe arms, along with a residual type-I rec…
Unique packaging of Ag(2)O on the surface of polycrystalline AgCl allows fabrication of a new useful, superhydrophobic composite material. This pure inorganic material with surface porosity of submicrometer aperture size fabricates air pockets, which make the composite material superhydrophobic. The new material behav…
A facile route was demonstrated for inorganic Sn-X-complex-induced syntheses of self-assembled 1D columnar, 2D raftlike, and 3D stratiform anisotropic Cu(2)S hexagonal nanoplates. The factors (reaction time, temperature, the concentration of Sn-X complex, and so on) that influence the size, phase, monodispersity, and…
In this study, two methods, the numerical simulation and the artificial neural network, are adopted to predict the vortex yarn tenacity from some process and nozzle parameters. The fiber-airflow interaction and the motional characteristics of the fiber inside the vortex spinning nozzle are analyzed through the numeric…
In order to apply information from molecular dynamics (MD) simulations in problems governed by engineering length and time scales, a coarse graining methodology must be used. In previous work by Zhou et al (2009 Acta Mater. 57 4671–86), a traction-separation cohesive model was developed using results from MD simulatio…
We report the study of a resonant bandpass filter made of a very thin subwavelength metal patch array coupled to a high index dielectric waveguide. The spectral properties of those filters can easily be tuned by playing on the lateral dimensions of the grating. They exhibit high and narrow transmission peaks together…
Moonlight metal: The valence-precise compound Rb4Sn5P4Se20 (see picture, Rb blue, Sn green, P black, Se red) is the first metallic selenophosphate. It features a new structure hybrid of “conducting” [Sn5Se8] layers and “insulating” [P2Se6] ligands. It shows the highest electrical conductivity among the chalcophosphate…
The objective was to examine the effects of layering fabrics on selected properties known to be critical in the outdoor recreational activity market (permeability to air and to water vapor, and thermal-related measures including ’dry’ and ’wet’ thermal resistance). With laboratory-based testing used by manufacturers t…
Reduction for oxidation: After preliminary treatment with molecular hydrogen, Au/TiO2 and Au/Al2O3 catalysts were able to induce O2 isotope exchange at mild conditions (−15 °C), which is believed to proceed through highly reactive surface oxygen species. However, the relative intensity of such an exchange is markedly…
Abstract Light‐induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)} 2 (dhbq)](PF 6 ) 3 ( 1 ), was investigated by ESR analysis of dhbq 3– . LIVT phenomena were observed in the sample diluted in the glass matrix as well as that in powder form. The signal decay and the relaxation were analyzed by doubl…
Diurea cross-linked bridged silsesquioxanes (BSs) C(10)C(n)C(10) derived from organosilane precursors, including decylene chains as side spacers and alkylene chains with variable length as central spacers (EtO)(3)Si-(CH(2))(10)-Y-(CH(2))(n)-Y-(CH(2))(10)-Si(OEt)(3) (n = 7, 9-12; Y = urea group and Et = ethyl), have be…
We develop a model for the effect of a magnetic field on quasiparticle interference in an iron-based superconductor. Recently, scanning tunneling experiments have been performed on Fe(Se,Te) to determine the relative sign of the superconducting gap from the magnetic-field dependence of quasiparticle scattering amplitu…
We show that a distinct class of colloidal crystals, which consist of mutually overlapping particles, has a novel and universal response to steady shear. After a shear-banding regime at low shear rates, strings parallel to the flow direction form as shear grows, which order on a hexagonal crystal in the gradient-vorti…
One critical component of engineering living tissue equivalents is the design scaffolds (often made of hydrogels) whose degradation kinetics can match that of matrix production by cells. However, cell-mediated enzymatic degradation of a hydrogel is a highly complex and nonlinear process that is challenging to comprehe…
The magnetically ordered phases and spin dynamics of magnetoelectric LiNiPO${}_{4}$ have been studied in fields up to 17.3 T along the $c$ axis. Using neutron diffraction, we show that a previously proposed linearly polarized incommensurate (IC) structure exists only for temperatures just below the N\'eel temperature…
Rare earth ions ( Tb 3+ , Eu 3+ , Yb 3+ , Tm 3+ , Er 3+ , and Ho 3+ )‐doped SrR 2 O 4 ( R = Y and Gd ) were prepared by solid‐state reaction, and their optical properties were investigated. Upon VUV–UV excitation, the SrY 1.99 O 4 :0.01 Tb 3+ exhibits a typical green emission of Tb 3+ with the dominant peak located at…
The formation of magnetic moment due to the dopants with p-orbital (d-orbital) is named d0 (d −) magnetism, where the ion without (with) partially filled d states is found to be responsible for the observed magnetic properties. To study the origin of magnetism at a fundamental electronic level in such materials, as a…
Electrospinning is a process to generate nanofibrous nonwovens. With these nonwovens, many applications can be targeted, such as water filtration. In this paper, polyamide nanofibrous membranes are evaluated for their pore size, a key parameter in water filtration, and for their removal of microorganisms. To increase…
Ein molekulares FeII4-Quadrat geht nach thermischer und optischer Aktivierung in zwei Stufen einen vollständigen Übergang von vier Low-spin(LS)- zu vier High-spin(HS)-Zentren ein (siehe die Kurve der magnetischen Suszeptibilität). Die reversible Desorption und Resorption von Wassermolekülen verläuft als Einkristall-Ei…