Materials Literature
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We report on the first observation of a magnetic transition in multiferroic Pb${}_{5}$Cr${}_{3}$F${}_{19}$. The system undergoes a ferroelectric transition at ${T}_{\mathrm{C}}$ $=$ 545 K and probably an antiferromagnetic transition around ${T}_{\mathrm{N}}$ $=$ 11 K. Between 50 K and ${T}_{\mathrm{N}}$, the system is…
A novel, instrumented microindentation technique was successfully used to measure the temperature associated with the martensitic transformation leading to the recovery of plastic strain in a Nickel–Titanium (NiTi) shape memory alloy. Following a standard indentation cycle, the indenter was partially unloaded such tha…
Mesoporous silica metal oxide (ZnO and CdO) thin films have been used as metal ion precursors to produce the first examples of mesoporous silica metal sulfide (meso-SiO(2) @ZnS, meso-SiO(2) @CdS) or silica metal selenide (meso-SiO(2) @ZnSe, meso-SiO(2) @CdSe) thin films, in which the pore walls are made up of silica a…
The electrochemical frequency modulation (EFM) technique has been used to investigate its ability to monitor stress corrosion cracking (SCC) of sensitized stainless steel U-bend specimens in sodium thiosulfate (Na2S2O3) and sodium chloride (NaCl) solutions. Type 304 (UNS S30400) stainless steel was sensitized for diff…
In keeping with the high interest in micro air vehicles, microfabrication technologies have been developed in an attempt to mimic insect wings via a membrane-vein structure. In this work, we present microfabrication techniques that mimic a beetle wing to construct a realistic vein-membrane structure. Full microfabrica…
We report the preparation, crystallization, and solid state characterization of a new benzannulated phenalenyl radical; a distinctive feature of this molecular solid is the absence of any well defined conducting pathway(s). In the solid state, the radicals exist as π‐dimer and the requisite C···C contacts between dime…
Dopants in nanowires, whether intentional or unintentional, can ultimately control the material’s properties and, therefore, need to be understood on the atomic scale. We study vapor–liquid–solid grown manganese-doped lead sulfide nanowires by atom-probe tomography for the first time for lead salt materials. The three…
Coherent and incoherent scattering cross sections have been measured using a high purity germanium detector on elements in the range of Z = 13–50 using 241 Am gamma rays. The cross sections have been derived by comparing the net count rate obtained from the Compton peak of aluminum with the elastic/Compton peak of the…
An advanced model for melt blowing was used to predict the effects of modified air fields on fiber formation. The model, which was developed previously, involves the simultaneous solution of the momentum, energy, and continuity equations. Crystallization effects were included. The model equations were solved numerical…
Solenostemon monostachyus is an important herb that is native to West and Central Africa. The leaves have been traditionally used for various medicinal purposes however the scientific basis for these effects is scarce. The aim of this study was to investigate the in vitro antioxidant and free radical scavenging abilit…
Thermolysis of either the 3-D, bridged-layered [NEt(4)]Mn(II)(3)(CN)(7) or 2-D, layered [NEt(4)](2)Mn(II)(3)(CN)(8) forms Mn(II)(CN)(2). Rietveld analysis of the high-resolution synchrotron powder X-ray diffraction data determined that Mn(II)(CN)(2) is cubic [a = 6.1488(3) Å] (space group = Pn3m) consisting of two ind…
The coating of papayas with Cassava Starch (CS) and carboxymethyl starch (CMS) is an alternative to extend the shelf life of these fruits. This study evaluated the effect of the three different levels of CS and CMS (1, 3, and 5%) on sensory characteristics of papayas during storage. Nine selected and trained assessors…
A new method was proposed to estimate the rolling angle of a droplet on a superhydrophobic surface. Based on the relationship between the adhesion work and the force moment of the spherical droplet, a rolling angle model was established. For smooth surfaces, the equation we obtained is sin α ≥ [(4γ l )/( g ·δ)]·[(3π 2…
In this research, the concept of continuum damage mechanics (CDM) was implemented to evaluate damage initiation and evolution in structural steel rebars at low and intermediate loading rates. The work was divided into experimental and theoretical phases to evaluate the ductile damage behavior. The experimental part in…
Abstract A molecular simulation strategy based on homology modeling and electrostatic potential calculations has been proposed to assist the immobilization process of a CC hydrolase MfphA onto mesoporous SBA‐15. The size of the enzyme, pH‐dependence of the immobilization process, and possible orientation of MfphA ont…
A reactive hydride composite (RHC) with initial composition 3CaH 2 + 4MgB 2 + CaF 2 was studied by in situ synchrotron radiation powder X-ray diffraction (SR-PXD) and X-ray absorption near edge structure (XANES) at the B K-edge and at the Ca K-edge. The hydrogenation reaction proceeds by an unknown intermediate. No ev…
Hydrogen electrosorption was performed in thin electrodeposits of Pd alloys with Pt, Au, and Rh. The possibility of their application as phase charging–discharging systems was investigated. The values of specific pseudocapacitance, power, and energy were calculated for hydrogen-saturated Pd-rich electrodes for tempera…
Low-frequency Raman scattering from self-assembled bioinspired diphenylalanine (FF) nanotubes/microtubes (NTs/MTs) has been observed for the first time. Four double peaks are identified as the three-dimensional localized collective (acoustic phonon) vibrations of FF molecules in the subnanometer crystalline structure…
Single-crystalline samples of a new Zintl compound, Eu(3)Ga(2)P(4), have been synthesized by a Ga-flux method. Eu(3)Ga(2)P(4) is found to crystallize in a monoclinic unit cell, space group C2/c, isostructural to Ca(3)Al(2)As(4). The structure is composed of a pair of edge-shared GaP(4) tetrahedra, which link by corner…
ZnO has a high potential for use in light-emitting devices in the visible and UV spectral range. One of the main challenges in an electrically driven device is the low energy of the valence band and, consequently, the difficult injection of holes. Here, we present an approach combining naturally n-type ZnO nanocrystal…