IR – Page 5 – TechConnect Briefs

Determination of Cefixime in aqueous solution using multiwalled carbon nanotubes solid- phase extraction cartridge

Jafari M., Aghamiri F., Khaghani G.R., university of isfahan, IR

one of the most important chemical properties of carbon nanotubes is having a hydrophobic surface, and because of that many compounds and materials can be retained on the surface of these nano structures. In this [...]

Is Aluminum Suitable Buffer Layer for Growth of Carbon Nanowalls?

Alizadeh Eslami P., Ghoranneviss M., Nasiri Laheghi S., Islamic Azad University, IR

Self-assembled carbon nanostructures like carbon nanotubes (CNTs) and carbon nanowalls (CNWs) have attracted much attention for several applications, such as gas storage, membranes for electrochemical energy storage, and field emitters. Recently, Wu et al. [1] [...]

Fabrication of bulk Al-TiB2 nanocomposite by spark plasma sintering of mechanically alloyed powder

Sadeghian Z., Enayati M.H., Beiss P., Shahid Chamran University, IR

In situ Al-TiB2 nanocomposite was synthesized by mechanical alloying (MA) of pure Ti, B and Al powder mixture and consolidated by spark plasma sintering (SPS).The structural characteristics of powder particles and sintered samples were studied [...]

Antibacterial activity on Polyamide and Natural fabrics using Low Temperature Plasma

Shahidi S., Rashidi A., Wiener J., Ghoranneviss M., I.A. University, IR

Polyamide (PA) synthetic textiles are among the most used fibers in the biomedical textile field [1]. Wounds often provide a favorable environment for the colonization of microorganisms. In order to improve the opportunity for wound [...]

Novel Branched nanostructures of Carbon nanotubes on Si substrates suitable for the realization of gas sensors

Abdi Y., Mohajerzadeh S., Sohrabi M.H., Fathipour M., Araghchini M., University of Tehran, IR

A novel tree-like nanostructure of carbon nanotubes was prepared using growth of vertically aligned nanotubes. As an application of the structures we have used them for fabricating the gas sensor. Because of their unique branched [...]

Application of Anderson-Schulz-Flory (ASF) equation in the proiduct distribution of slurry phase FT synthesis with nanosized iron catalyst

Sohrabi M., Tavakoli Araghi A., Karegari A., Amirkabir University of Technology, IR

Application of Anderson- Schulz- Flory (ASF) Equation in the Product Distribution of Slurry Phase FT Synthesis with Nanosized Iron Catalysts Akram Tavakoli Araghi, Morteza Sohrabi∗ , Ali Kargari AmirKabir University of Technology , Faculty of [...]

Structural and Magnetic Properties study of CoFe2O4 Nanopowder prepared by Mechanical Milling using metallic Cobalt and Hematite powder Blend

Beitollahi A., Sani R., Maksimov Yu.V., Suzdalev I.P., Iran University of Science and Technology (IUST), IR

In this work we report the phase formation and magnetic properties of CoFe2O4 nanopowder prepared by mechanical alloying technique using metallic cobalt and hematite powder (1:1 molar ratio) as the initial raw material in ambient [...]

Application of Encapsulated PECVED-grown Carbon Nano-Structure Field-Emission Devices in Nanolithography

Koohsorkhi J., Adbi Y., Mohajerzadeh S., Derakhshandeh J., Hosseinzadegan H., Khakifirooz A., Robertson M.D., University of Tehran, IR

We report a novel technique for submicron and nanolithography using vertically grown nickel seeded carbon nano-structures (CNS) on silicon substrates. The field emission characteristic of carbon nano-tubes is utilized to create nano-scale features. The structure [...]

A Study of the Behaviour of Magnetic Microactuators

Flynn M., Gleeson J.P., University College Cork, IR

The behavior of an idealized magnetic microactuator is modeled and analyzed. A two parameter mass-spring model is shown to exhibit a bifurcation from one to three steady states as the geometry of the device is [...]

Magnetohydrodynamic Micromixing

Gleeson J.P., West J., University College Cork, IR

Modeling of magnetohydrodynamic (MHD) pumping in an annular microchannel is reduced to a two-dimensional Poisson equation for the azimuthal velocity. A method for enhancing the mixing of fluids is proposed, and is proven to yield [...]