Materials Literature
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A composite comprising cyclopentyl trisilanol silsesquioxanes (CpSSQ(OH)3) and 50% epoxidized natural rubber (ENR-50) was prepared at reflux temperature employed hydrochloric acid (HCl) as catalyst. HCl was found to be an effective catalyst to promote ring opening reaction of ENR-50 and tailored CpSSQ(OH)3 to the ENR-…
The gold nanoparticles film has been successfully formed on the silicon wafer by self-assembled method. The gold colliods were prepared by chemical reduction method where sodium citrate (act as the reducing, capping and stabilizing agent) were added into the boiling 50ml of 0.01% tetrachloroauria acid (HAuCl4) solutio…
The biocomposites were prepared by using kenaf bast fiber mat as reinforcing materials at different percentage. The kenaf bast fiber was treated with alkaline at different sodium hydroxide (NaOH) percentage. From the results obtained, surface morphology of the treated kenaf bast fiber shows less impurity than untreate…
This research work investigates the influence of the annealing process upon the performance of photo-emissive layer of organic light-emitting diode (OLED). The photo-emissive layer consists of a ternary blend of N, N-diphenyl-N,N-bis (3-methylphenyl)-(1,1-biphenyl)-4,4-diamine (TPD), 2-(4-biphenylyl)-5-phenyl-1,3,4-ox…
The potential exists to apply diffraction gratings to optical imaging systems to improve camera resolution and shorten optical length. However, we have noted the generation of striped flare lights, which differ from unnecessary-order diffraction lights, under intense lighting. We have elucidated the generation princip…
onic liquid, 1-n-butyl-3-methylimidazolium chloride ([C4mi Cl) was used to pretreat sugarcane bagasse (SCB), followed by regeneration of SCB by addition of deionized water. The regenerated SCB exhibited enhancement in enzymatic saccharification with an average 3.1-fold enhancement in yield of reducing sugar produced c…
Abstract A donor–acceptor dyad was prepared comprised of a borondipyrromethene (Bodipy) chromophore as the acceptor and a dimethylamino moiety as the donor. The two groups are separated by a 2,2′‐biphenol moiety. The excited state of the Bodipy is efficiently quenched by electron transfer involving donation from the d…
The properties of polyvalent polymers to form supramolecular complexes with biological substrates offer many attractive therapeutic possibilities. Polymeric binders are macromolecules designed to exert a pharmacological effect by selectively interacting with exogenous or endogenous substrates. They can be employed to…
We fabricated a thermoelectric device with a silicide/silicon laminated hetero-structure by using RF sputtering and rapid thermal annealing. The device was observed to have Ohmic characteristics by I-V measurement. The temperature differences and Seebeck coefficients of the proposed silicide/silicon laminated and bulk…
This paper reviews the effects of the operating parameters on the optical and electrical properties of p-type aluminum-doped ZnO (AZO) films. In addition, the most well-known fabrication routes used in the preparation of p-type AZO, such as magnetron sputtering, sol–gel, ultra spray pyrolysis, are introduced. This pap…
So far, application of RRA (Retrogression and Re-aging) heat treatment in improving SSC (stress corrosion cracking) resistance of aluminum alloy 7075 is limited to thin samples as it is constrained by short retrogression time at high temperature. The aim of this research is to obtain thick aluminum alloy 7075 plate wi…
NiTi is alloy that has unique properties include shape memory dan superelasticity. However, it has disadvantages which cause allergic and toxicity to the body from the Ni release. In order to reduce Ni release and increase corrosion resistance an Electropolishing Pretreatment-Photoelectrocatalytic Oxidation (EP-PEO) a…
Abstract Supramolecular chemistry has become a key area in emerging bottom‐up nanoscience and nanotechnology. In particular, supramolecular systems that can produce a photonic output are increasingly important research targets and present various possibilities for practical applications. Accordingly, photonic properti…
Strontium appears to be one of the most effective substances for the treatment of osteoporosis and other bone-related conditions. Since calcium and strontium share the properties of group 2A elements, strontium can replace calcium in bone without much difficulty. Additionally, non-radioactive strontium also deposits i…
We study low-frequency noise in a non-Ohmic region of metallic single walled and multiwalled carbon nanotubes. The generalized relative noise appears to be independent of applied bias in the power-law regime of the tubes and in agreement with theoretical predictions. Beyond the power-law regime the suppression of cond…
This paper compared two kinds of catalysts, Co3O4/GO and Mn3O4/GO, which were applied to catalyze PMS for NOx oxidation. The parameters of the pH, PMS concentration, catalyst concentration, reaction time and the temperature were investigated. Under the same parameters, the results showed that the oxidation efficiency…
Porous metals that have open pores structure with low density and light weight properties are suitable to be used in many engineering applications. In this work, the porous aluminum was fabricated via sintering dissolution process (SDP). Aluminum and sodium chloride (20, 40, 50 wt. %) powders were mixed together to pr…
Dye-sensitized solar cell (DSSC) is one of the very promising alternative renewable energy sources to anticipate the diminishing in the fossil fuel reserves in the next few decades and to make use of the abundance of intensive sunlight energy in tropical countries like Indonesia. TiO2 nanoparticles have been used as t…
The population dynamics of single exciton and biexciton states in a simple model of a spherical semiconductor nanostructure is modeled numerically in the presence of Coulomb coupling between single and two exciton states and a dissipation channel in order to study the transient biexciton population that occurs in an o…
For years in the automotive industry the objective is to reduce the weight of components for well known car performance and environmental reasons. One way is to use more resistant materials for instance in the area of suspension foundry castings. Austempered Ductile Iron (ADI) is one of the most unique materials due t…