Materials Literature
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Terephthalic acid functionalization of reduced graphene oxide (rGO) “paper” enhances the tensile strength and fracture toughness by ≈70% and ≈200%, respectively, by promoting a “slip-and-stick” fracture pathway within the material. It is proposed that this dynamic fracture mechanism arises from interactions between ca…
We describe full wave simulation results for a compact, novel deflecting structure operating around 2 GHz. The structure consists of a pair of elliptical complementary split-ring resonators (CSRRs) etched into a copper rectangular waveguide along with outer rectangular cavities to maintain the vacuum. Our design utili…
ZnS nanoparticles of different sizes are synthesized employing a simple wet chemical method. These nanoparticles are used to study their impact on the Daphnia sp. through traditional toxicity tests. The percentage of mortality is found to increase initially with increasing nanoparticle concentration or exposure time a…
ABSTRACT We examined the effects of mixing temperature on the dielectric properties of polymethylmethacrylate (PMMA)‐pristine bentonite nanocomposites by using X‐ray diffraction, FT‐IR and dielectric spectroscopies. The samples were prepared during 8 hours at temperatures 265 K, 273 K, 281 K, 289 K and 298 K without a…
Many three-dimensional constitutive models have been proposed to enhance the analysis and design of shape memory alloy (SMA) structural components. Phenomenological models are desirable for this purpose since they describe macroscopic responses using internal variables to govern the homogenized material response. Beca…
It was tried to prepare hybrid microcapsules composed of porous inorganic particles and epoxy resin shell and to apply to the self‐healing agent. A water soluble imidazole of gelation promoting agent as the core material was microencapsulated in the porous inorganic particles, which were coated with epoxy resin. The p…
New strategies are requested for the preparation of bioinspired host-guest complexes to be employed in technologically relevant applications, as sensors and optoelectronic devices. We report here a new approach employing a single monomeric protein as host for the strongly fluorescent rhodamine dye. The selected protei…
The excited-state structure of impurity-trapped excitons are measured in a multisite system. We use a two-color (UV-IR) pulsed photoluminescence enhancement technique, which probes the interlevel transitions and dynamics of impurity-trapped excitons in doped insulating phosphor materials. The technique is applied to N…
The influence of poling temperature (Tp) on d33 and of (Na0.52K0.4425Li0.0375)(Nb0.86Ta0.06Sb0.08)O3 ceramics is investigated. No notable stress is induced as there is not apparent phase transition on cooling when the ceramics are poled below orthorhombic-tetragonal phase transition temperature (To–t). However, stress…
Studies of skin wound healing in crocodilians are necessary given the frequent occurrence of cannibalism in intensive farming systems. Air temperature affects tissue recovery because crocodilians are ectothermic. Therefore, the kinetics of skin wound healing in Caiman yacare were examined at temperatures of 33°C and 2…
Abstract The crystal structures of the mixed borates Sr3Er2(BO3)4 [Pnma, no. 62, Z = 4, a = 738.08(2), b = 1588.94(4), c = 867.81(2) pm, 683 reflections, 70 parameters, R1 = 0.037, wR2 = 0.077] and Sr3Ho2(BO3)4 [Pnma, no. 62, Z = 4, a = 738.45(7), b = 1591.55(12), c = 871.03(9) pm, 691 reflections, 59 parameters, R1 =…
We report magnetic-field-dependent small-angle neutron scattering (SANS) experiments on a Nd2Fe14B/Fe3B nanocomposite. For the two scattering geometries where the applied magnetic field is either perpendicular or parallel to the incoming neutron beam, we have independently analyzed the field-dependent SANS data in ter…
We present here evidence for the off-centering of Bi3+ symmetrically distributed along the six ⟨100⟩ directions of a pseudocubic composition (Ba0.70Bi0.30)(Ti0.70Fe0.30)O3 at the electron density distribution level. We also calculate the strength of covalent bonding between the oxygen (O2−) anions with A-site (Ba2+/Bi…
Magnetic field-induced transition of Ni45Co5Mn36.7In13.3 was investigated under magnetic fields with different sweeping rates. A static magnetic field produced by a superconducting magnet, a semi-static magnetic field created by a flywheel DC generator-powered magnet, and a pulsed magnetic field resulting from a conde…
In this study, it was found that a novel superlattice structure can favorably influence the carrier and phonon transport properties of superlattice films. The n-type Bi 2 Te 3 /ZrB 2 superlattice film was successfully fabricated by simple ion-beam-assisted deposition on a large scale. The composition and microstructur…
The structural origin of the mechanical double loop behavior of polycrystalline BaTiO3 at temperatures just above the Curie point has been investigated using in situ high-energy synchrotron x-ray diffraction during uniaxial compressive mechanical loading. The results show a stress-induced transition from the high temp…
Cold welding defect is the most common defect in electro-fusion (EF) joint for connecting polyethylene (PE) pipe. In our previous study [1], the cold welding defect is successfully inspected by an eigen-line method based on phased array ultrasonic testing technology. However, limited research has been reported on the…
ABSTRACT This article completes a systematic strategy for formulation and optimization of thermotropic systems with fixed domains (TSFDs) for overheating protection purposes. Focus was on characterization of morphology and on revealing optimization potential. A comprehensive characterization of scattering domain size…
Energy saving and environmental protection are topics of growing interest. In the light of these aspects alternative refrigeration principles become increasingly important. Shape memory alloys (SMA), especially NiTi alloys, generate a large amount of latent heat during solid state phase transformations, which can lead…
Abstract A new synthesis route for β‐MgAl2C2 is presented. The synthesis of this carbide compound was based on a solid‐state metathesis reaction. The material was prepared at 900 °C from aluminium powder, MgCl2 and Li2C2. The reaction product was inspected by X‐ray powder diffraction and 13C NMR spectroscopy.