Materials Literature
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In this paper, we propose a specific algorithm based on the least-square method to predict the incidence angle insensitivity of a metamaterial absorber. The proposed algorithm was analyzed on a metamaterial absorber design with circular sectors on the top layer and a full copper cover on the bottom layer. We retrieved…
Bulk-to-single layer molybdenum disulfide (MoS2) is widely used as a robust candidate for photodegradation of organic pollutants, hydrogen production, and CO2 reduction. This material features active edge sites and narrow band gap features, which are useful for generating reactive species in aqueous suspensions. Howev…
Novel trianiline containing water soluble polyurethane (TAPU) was synthesized by polymerization of polyethylene glycol, toluene diisocyanate and amine-capped aniline trimer. The influence of TAPU on the corrosion inhibition of mild steel in 1 M HCl was investigated using weight loss measurements, potentiodynamic polar…
Sol–gel prepared nanoparticles of pure alpha alumina with 0.5, 1.0, 1.5, 2.0, and 2.5 wt% content were used in the synthesis of Al‐6061 alloy based metal matrix composite via powder metallurgy route. After synthesis, corrosion investigation of the synthesized composite samples were carried out in 3.5% NaCl solution us…
Being able to precisely control the morphologies of noble metallic nanostructures is of essential significance for promoting the surface-enhanced Raman scattering (SERS) effect. Herein, we demonstrate an overgrowth strategy for synthesizing Au @ M (M = Au, Ag, Pd, Pt) core-shell heterogeneous nanocrystals with an orie…
Pipe bombs of steel or PVC fragment in reproducible patterns when similarly configured. The power of the explosion correlates with number, mass, and size of the fragments recovered, where a large number of small, low-mass fragments indicate a high-power event and vice versa. In discussing performance, describing pipe…
In an insulating system including solid and gas dielectrics, discharge type has a strong impact on charge accumulation at the interface between two dielectrics, and hence charge decay. In order to clarify the influence, a surface charge measurement system was constructed, and three types of discharge, i.e. surface dis…
Four modular permanent magnet linear machines (PMLMs) with E-core and C-core primary segments and 12-slot/13-pole (12s/13p) and 12-slot/14-pole (12s/14p) slot/pole combinations are compared in this paper. The influences of flux gap width on the electromagnetic performances and power losses have been investigated based…
Authors Different kinds of aluminum pastes have been successfully prepared by adding various additives including the glass powders with different melt-points, the aluminum powders with different sizes, and the inert fillers. We emphatically analyze the influence of aluminum pastes prepared as above on the electrical p…
The study of attached algal communities (phytoperiphyton) in 16 rivers included the analysis of their taxonomic composition, ecology and spatial distribution. The paper discusses the main principles of change in the structure and functioning of the attached algal communities. Special attention is given to the problems…
Mesoporous iron phosphates were synthesized using sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) as surfactants. The material synthesized in the presence of SDS was not applied as a positive electrode active material of a lithium battery. The results show that the obtained FePO 4 has a mesoporo…
In the present work, one-step electrochemical method was utilized to synthesize reduced graphene oxide-silver nanoparticles (RGO-AgNPs) composites modified electrode. By modulating the electrodeposition potential, uniform and highly dispersed AgNPs were deposited onto RGO surface, the morphology of which was character…
The effect of the sulphur atom on 2-thiouracil (2TU) and 2-thiouridine molecules, as compared with uracil and uridine molecules, respectively, was carried out in several environments. The predicted IR spectrum of 2TU in the isolated state was compared with that obtained for uracil molecule and with those reported expe…
This work aims to enhace the corrosion resistance of medium carbon steel 45. Zn-Fe coatings on steel 45 were prepared at different temperatures (380°C, 390°C, 400°C and 410°C) by pack cementation process. The microstructure, formation mechanism and corrosion behavior of the Zn-Fe coatings were investigated. The Zn-Fe…
The optical properties for crystalline films of the highly energetic material (HEM) hexahydro-1,3,5-trinitro-s-triazine, which is also known as RDX, deposited on gold (Au) and stainless steel (SS) substrates are presented. RDX has two important stable conformational polymorphs at room temperature: α-RDX and β-RDX. The…
Abstract Fischer–Tropsch synthesis was studied on mesoporous silica supported bimetallic Co‐Ni catalyst in the fixed‐bed reactor (FBR) and slurry continuous stirred tank reactor (CSTR) under different CO conversions by fixing other process parameters, for example, reaction temperature (300°C), syngas ratio (2), and to…
Reinforced concrete structures experience different kinds of load, which may influence the passive behaviour of steel. For the purpose of simulating in-service condition, the steel sample for electrochemical measurement was embedded in concrete in this study. The effects of sustained load level and duration on the pas…
The susceptibility to sensitization in 409 ferritic stainless steel (FSS) weldments was studied, by means of double loop electrochemical potentiokinetic reactivation test (DL-EPR). After the electrochemical test, the microstructure was analyzed by scanning electron microscopy (SEM) and the presence of elements with di…
Vertical-type high-voltage light-emitting diodes (HV-LEDs) with 2 × 2 micro-cells were fabricated on Cu substrates, and the micro-cell geometry was modified to enhance the optoelectronic performance. The current spreading in micro-cell is most dominantly affected by the distance between electrode and edge of chip. Whe…
Beton terdiri dari bahan campuran semen, kerikil, pasir, air dan bahan tambah. Penggunaan bahan tambah berupa serat sabut kelapa diharapkan dapat memberi peningkatan kuat tekan beton pada beton normal. Penelitian ini dimaksudkan untuk mengetahui karakteristik agregat kasar dan halus dari Desa Burukene Kecamatan Bataug…