Materials Literature
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Using the machine learning method kriging, we predict the energies of atoms in ion-water clusters, consisting of either Cl− or Na+ surrounded by a number of water molecules (i.e., without Na+Cl− interaction). These atomic energies are calculated following the topological energy partitioning method called Interacting Q…
Abstract An atomically thin MoS 2 field-effect transistor (FET) is expected as an ultrathin photosensor with high sensitivity. However, a persistent photoconductivity phenomenon prevents high-speed photoresponse. Here, we investigate the photoresponse of a MoS 2 FET with a thin Al 2 O 3 buffer layer on a SiO 2 gate in…
Green synthesis of CuO nanospindles and their assembly into nanoflowers has been demonstrated by changing the solvents such as water and ethanol along with the Dodonaea angustifolia (DA) extract. This is the first to report the use of DA extract for the green synthesis of nanostructures. The DA+water yielded the nanos…
Several chemical reactions related to the oxidation and combustion of sulfur are investigated using a number of computational chemistry methods with the objective of determining appropriate methods for use in developing an elementary reaction mechanism for oxidation of sulfur. Calculations are focused on thermochemica…
Silver nanoparticles (AgNPs) are being increasingly utilized in consumer and medical applications. However, there remains conflicting reports on their safety, which are evaluated through a combination of in vitro and in vivo exposure models. These discrepancies may arise, in part, due to the inherent differences betwe…
Hybrid van der Waals heterostructures constructed by the integration of organic molecules and two-dimensional (2D) transition metal dichalcogenide (TMD) materials have useful tunable properties for flexible electronic devices. Due to the chemically inert and atomically smooth nature of the TMD surface, well-defined cr…
Dielectric constant, loss tangent and electrical conductivity of Na1−xKxNbO3 (X = 0.08 and 0.17)(SPN) ceramic pellets have been measured at 10, 100 and 1000 kHz frequencies and at temperature varying from room temperature to 425°C. The dielectric constant increases with increase of temperature up to 400°C at all the t…
The crystal structure of kolwezite, (Cu,Co)2(CO3)(OH)2, has been refined by Rietveld \nmethod from synchrotron X-ray powder data. Kolwezite, P21/a, a = 12.201(1), b = \n9.354(1), c = 3.1494(3) Å, ß= 98.922(7)°, is isostructural with rosasite, and its crystal \nstructure was refined up to Rp = 4.56%, wRp =…
The effect of hydroxyl group number of some anthraquinon derivatives 1,2,4-trihydroxyanthraquinone (purpurin) and 1,4-dihydroxyanthraquinone (quinizarin) on their corrosion inhibition efficiency has been reported in order to establish a relationship between inhibitor efficiency and molecular structure. Experimental st…
The Pb(Zr0.56Ti0.44)O3 (PZT) ceramics was subjected to a pressure-induced activation at 320 MPa in a Bridgman anvil, where a load pressure was combined with a shear deformation. The induced changes in the linear and angular parameters of a unit cell, in the ratio of coexisting rhombohedral (R3m) and tetragonal (P4mm)…
SUMMARY When a transformer is energized, inrush currents whose magnitudes may reach tens of its nominal current occur. Since the inrush currents lead to a voltage drop, this may cause stops and malfunctions of electrical appliances. In addition, the overcurrents may cause an unnecessary operation of an overcurrent rel…
A novel glycine derivative, (9H-fluoren-9-yl) methyl (2-(heptadecyl amino)-2-oxoethylcarbamate (FMOC), was synthesized and investigated as a corrosion inhibitor for N80 carbon steel in a 3.5% sodium chloride solution using weight loss measurements, potentiodynamic polarization, and electrochemical impedance spectrosco…
This research was focused on discovering the utilization of Dioscorea hispida (gadong tuber) starch as a potential green corrosion inhibitor for SAE 1045 carbon steel in 0.6 M NaCl media. Raw starch from gadong tubers was obtained through the extraction and precipitation process prior to drying in producing fresh star…
To study the alumina template pore size distribution as a function of Al thin film grain size distribution, porous alumina templates were prepared by anodizing sputtered aluminum thin films. To control the grain size the aluminum samples were sputtered with the rate of 0.5, 1 and 2 Å/s and the substrate temperature wa…
Despite the rapid advent of superomniphobic materials, there is a lack of methodologies to accurately investigate the ultralow-energy interactions taking place on these interfaces. For instance, universally employed models such as the pendant droplet often fail to provide representative information on the wetting prop…
New nontoxic and biocompatible ferroelectric materials are a subject undergoing intense study. One of the most promising research branches is focused on H-bonded organic or hybrid ferroelectrics. The engineering of these materials is based on mimicking the phase transition mechanisms of the well-known inorganic ferroe…
Micro-capillaries, capable of light-regulated binding and qualitative detection of divalent metal ions in continuous flow, have been realised through functionalisation with spiropyran photochromic brush-type coatings. Upon irradiation with UV light, the coating switches from the passive non-binding spiropyran form to…
A tetragonal (Ba,Ca)(Zr,Ti)O 3 (BCZT) single crystal was grown by a flux method, and the piezoelectric coefficient ( d 33 ) was characterized. The piezoelectric response was proved to be associated with polarization extension, which was successfully used to explain the variation in d 33 * . From the intrinsic aspect,…
We calculate the Raman frequencies of the two stretching modes of as a function of temperature close to the paraelectric-ferroelectric transition (Tc = 270 K) in (CH3)2NH2Mg(HCOO)3 referred as DMMg. By assuming that the Raman frequencies of those two modes which exhibit anomalous behaviour near Tc due to the ordering…
Nonlinear dielectric measurements were carried out on two strongly polar liquids, 4-vinyl-1,3-dioxolan-2-one (VPC) and 4-ethyl-1,3-dioxolan-2-one (EPC), having chemical structures differing from propylene carbonate (PC) only by the presence of a pendant group. Despite their polarity, the compounds are all non-associat…