Materials Literature
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The dynamic response of a gas bubble entrapped in a cavity on the surface of a submerged solid subject to an acoustic field is investigated in the linear approximation. We derive semi-analytical expressions for the resonance frequency, damping, and interface shape of the bubble. For the liquid phase, we consider two l…
Quantum mechanical-based kinetic Monte-Carlo calculations (KMC) are used to investigate mechanisms of degradation of graphene devices subjected to 10-keV x-ray irradiation, ozone exposure, and subsequent high-temperature annealing. Using KMC, we monitor the time evolution of defect concentrations on a graphene surface…
Structural and magnetic properties of LiNi 0.5 Mn 1.5 O 4 and LiNi 0.5 Mn 1.5 O 4−δ are investigated using density-functional theory calculations. Results indicate that nonstoichiometric LiNi 0.5 Mn 1.5 O 4−δ and stoichiometric LiNi 0.5 Mn 1.5 O 4 exhibit two different structures, i.e., the face-centred cubic ( Fd -3…
The transport and magnetic properties were examined of thin films of the electron-doped manganite Ca1−xCexMnO3 (CCMO; 0 ≤ x ≤ 0.1) deposited on three different single-crystalline oxide substrates: YAlO3, NdAlO3, and LaSrAlO4, which subject the films to a compressive strain, a practical lattice matching, and a tensile…
Zinc sulphide thin films have been deposited on FTO coated glass substrates using the sputtering and chemical bath deposition techniques. ZnS thin film is at first grown by CBD using a aqueous solution of thioria, ammonia, ammonium chloride and zinc chloride, respectively; whereas ZnS thin film is also grown from sput…
Thermal conversion process was applied with three types of waste plastic mixture and waste plastics mixture to liquid hydrocarbon fuel production in present of oxygen under laboratory Labconco fume hood without adding any kind of catalyst. Utilization of the process described can reduce the impact of waste plastics si…
In this study, jute fibers were added into cement based materials to improve their compressive strength, flexural strength and early-age crack resistance. Results showed that the compressive and flexural strength of the fiber reinforced concrete were significantly enhanced with 30mm length jute fiber at the mixing amo…
The role of dynamic polar nanoregions (PNRs) of (1−x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 (PZN-100xPT) single crystals with the PT content x = 0.15 (i.e., higher than above the morphotropic phase boundary composition x ∼ 0.09) has been investigated using inelastic light scattering. The remarkable anomaly of the longitudinal acous…
Inspired by the co-coupling of the non-smooth structure and the waxy layer inducing the hydrophobicity of dragonfly wing surface, we developed a simple and versatile method to fabricate a superhydrophobic surface with the dragonfly wing structures. In this work, Ag nanorods grew on highly ordered anodic aluminum oxide…
Reliability is the most important property for insulators applied in electric power. As for composite insulators, hydrophobicity is a valuable and significant property in practical service. In this paper, based on dynamic contact angle measurement, a novel method to estimate the hydrophobicity of composite insulators…
Silver nanoparticles production was monitored by UVVis and TEM micrograph and they were obtained as spherical and homogenous nanoparticles with a size of ~100 nm by photon correlation spectroscopy (PCS). Silver nanoparticles, in an IC80range of 1-2 μg/mL, showed significant antifungal activity againstT. rubrum. Cytoto…
The pressure-induced phase transition of the hexagonal manganite ErMnO3 has been investigated using the synchrotron x-ray diffraction technique up to 57.6 GPa in a diamond anvil cell. The hexagonal structure exhibits anisotropic compression behavior. The bulk modulus (B0) is 168(3) GPa with B0′ = 4.0 (fixed). At room…
In this work, the change of magnetization as a function of applied stress has been investigated for test specimens of AISI 1018 steel. The various stages of fatigue damage process are characterized by the magnetomechanical measurements recorded by an APS 428D fluxgate magnetometer. Of great significance is the fact th…
Abstract Titanium and titanium alloys have several advantages, but the cost of titanium alloys is very expensive compared with the traditional metal materials. This article introduces two new low‐cost titanium alloys Ti‐2.1Cr‐1.3Fe (TCF alloy) and Ti‐3Al‐2.1Cr‐1.3Fe (TACF alloy). In this study, we used Cr‐Fe master al…
The results of an examination of vladimirivanovite, a new mineral of the sodalite group, found at the Tultui deposit in the Baikal region are discussed. The mineral occurs in the form of outer rims (0.01–3 mm thick) of lazurite, elongated segregations without faced crystals (0.2 to 3–4 mm in size; less frequently, 4 ×…
In this paper we have studied the correlation of microscopic length scales of ion dynamics with the network structure in lithium-iodide–doped lithium metaphosphate glasses. We have obtained microscopic length scales for ion dynamics, such as the characteristic mean square displacement and the spatial extent of sub-dif…
Electronic structure of newly synthesized sulfur-terminated graphene nanoribbons (S-GNRs) has been presented from the calculations based on ab initio density functional theory and non-equilibrium Green's function (NEGF) method. The calculations reveal that zigzag-edged S-GNRs (Z-S-GNRs) are thermodynamically more stab…
Abstract Barrier coatings against plasticizer leaching are deposited on flexible polyvinylchloride (PVC) films typically used in flooring or in the automotive industry. Octamethylcyclotetrasiloxane (OMCTS) and hexamethyldisiloxane (HMDSO) are plasma polymerized using plasma‐activated CVD (PA‐CVD) based on an atmospher…
The present work deals with the preparation and characterization of silane grafted MMT (S-MMT), organomodified MMT (O-MMT) and silane grafted organomodified montmorillonite (OS-MMT) reinforced silicone rubber (SR) nanocomposites. XRD of SR filled with O-MMT (1-8 wt%), OS-MMT (1-8 wt%) and S-MMT (1-5 wt%) suggested the…
Microbial mats are complex but stable, multi-layered and multi-functional biofilms, which are the most frequent bacterial formations in nature. The functional strategies and physiological versatility of the bacterial populations growing in microbial mats allow bacteria to resist changing conditions within their enviro…