Materials Literature
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In this paper, we propose a new metamaterial absorber based on magnetic absorbing material. This absorber has the characteristics of low-frequency transmission and high-frequency broadband absorption. The transmission coefficient of the metamaterial absorber is-0.5 dB at 1 GHz: the good low-frequency transmission prop…
The atomic positions of 3-methyl-1,4-dioxo-1, 4-dohydronaphthalen-2-yl-sulfanyl (3MDS) single crystal taken from XRD data were optimized by minimizing the forces. We make use of the optimized geometry as a starting point of the comprehensive theoretical calculations by employing the allelectron full potential lineariz…
Water-soluble CdTe quantum dots are synthesized to investigate how short-chain surface ligands bearing -SH, -COOH, and -NH2 groups interact with CdTe during nucleation/growth processes. Their optical properties and colloidal stability after the ligand exchange are also investigated. We then characterize the resulting…
In this paper describes, construction and working of more efficient and compactable spin coating machine with a low power consumption comparing to that of current spin coating machine available in the market. The spin coating machine consists of stepper motor, syringe system, Dc brushless motor and Arm processor. The…
Here in, we are reporting a novel biochemical approach for the formation of nickel and cobaltoxide(NiO and CoO) nanoparticles by using pomegranate peel and fungus at room temperature. We used nickel nitrate hexahydrate (Ni(NO3)2.6H2O)and cobalt nitrate hexahydrate (Co(NO3)2.6H2O) as precursors. Exposure of thebiomass…
The corrosion behavior of Zn in 0.1 M HCl solution containing various concentration of Ampicillin range (2 x 10 -4 – 1x10 -3 ) M was investigated. The corrosion rates were measured by using weight loss measurement and polarization curve, The results of polarization method obtained showed that the rate of corrosion of…
In present scenario, HVAC system (commonly used in the air conditioners) is very efficient and reliable but it has some demerits. It has been observed during the last two decades that the O3 layer is slowly destroyed because of the refrigerant (CFC and HFC) used for the refrigeration and air- conditioning purposes. Th…
In this paper, multiwalled carbon nanotubes (MWCNTs) have been functionalized by concentrated acid treatment. Then Ag nanoparticles are attached onto the functionalized F-MWCNTs using a chemical reduction process as an example of direct formation of AgNPs/ MWCNTs hybrid materials between the functionalized F-MWCNTs an…
*Corresponding Author Email: akranjbar1389@yahoo.com Tel/Fax: +98 811 8380031 Silver nanoparticles (Ag NPs) have been widely used as new potent antimicrobial agents in cosmetic and hygienic products. The purpose of this study was to investigate the possible protective role of Ag NP antioxidative biomarkers in rat…
Natural cellulose fibres from Broussonetia papyrifera (L.) Vent. (BP) bast were system atically investigated in this paper. To begin with, BP fibres were successively extracted from BP bast by four different degumming methods, among which the microwave-assisted method exhibited high efficiency. It was found that non-c…
2 Abstract: Plastic waste is increasing every year and the precise time needed for biodegradation is unknown. Environmental awareness has driven the development of new biodegradable materials, especially for single use plastic items. Polyhydroxybutyrate (PHB), biodegradable thermoplastic polyester is emerging out as a…
In recent times, precious metal nanoparticles (i.e., Gold Nanoclusters (AgNCs)) are extremely attractive because of their high fluorescence, good photostability, non-toxicity, excellent biocompatibility and solubility. The biomimetic synthesis has become a promising green pathway to prepare nanomaterials. Over the pas…
Bacterial cellulose (BC) is a suitable material for biomedical applications due to its remarkable proprieties, such us: biodegradability, biocompatibility and ready availability. In this paper the swelling and drug release profiles from bacterial cellulose- carboxymethyl cellulose (BC-CMC) composite hydrogels were inv…
Gold nanorod-based affinity sensors were developed utilizing concanavalin-A/dextran/glucose chemistry to detect glucose. The gold nanorods, synthesized using the seed-mediated method, were first coated with dextran sulfate. The dextran sulfate coating changed the local refractive index, which was observed as a red shi…
An organic–inorganic hybrid film fabricated from triethylene glycol–titanium oxide hydrate solution shows high refractive index ( <italic>n</italic> ∼ 2.1) in the visible region and surface evenness ( <italic>R</italic> <sub>a</sub> ∼ 0.25 nm) even when it is annealed at much lower temperature than the sintering tempe…
Electrical characteristics of the nematic LC cells with 3.5 nm semiconductor CdSe/ZnS quantum dots (QDs) were investigated. We observed variation of the LC cell capacitance with QDs concentration about 0.18 wt. %. The capacitance grown to three orders of magnitude at primary measuring under voltages below the Frederic…
A series of core-shell materials with 'spiky' surfaces are prepared through the self-assembly of gold nanorods onto polystyrene microspheres. Loading of the nanorods is finely tuned and the assemblies exhibit surface plasmon resonance properties. The 'spiky' surface topography of the assembled structures could serve a…
Exclusive Co <sup>2+</sup> incorporation into the framework of a TUD-1 type silicate was obtained using tetraethylene glycol (TEG) as a non-surfactant structure directing agent which was shown to be active for ethylbenzene oxidation.
We report a method to control the surface morphology of thin copper films during growth by chemical vapor deposition from the precursor Cu(hfac)VTMS. A molecular inhibitor – an additive that modifies the surface attachment kinetics but does not decompose and contribute impurity atoms to the film – is added during the…
We experimentally study the phase behaviour of a charge-stabilized two-dimensional colloidal monolayer which is subjected to a one-dimensional quasiperiodic substrate potential. Upon increasing the laser intensity, we observe a transition from a periodic to a quasiperiodic state. It proceeds via the formation of an in…