Doping Effect on Spin Dependent Electron Transport in Zigzag Silicene Nanoribbons
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): B. Sarebanha, S. Ahmadi Silicene has been recently synthesized in the form of nanoribbons on the anisotropic Ag (110) surface. The effects of disorder on silicene nanoribbons are expected to exhibit remarkable properties in the form of nanostructures. It has been found that the electronic structures of the doped zigzag silicene nanoribbons (ZSiNRs) are different from those of pristine ZSiNRs. In this paper, we study the spin dependent electron conductance of ZSiNRs substitutionally doped with Boron/Nitrogen (B/N) atoms by using Green's F...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
The Interparticle Coupling Effect on Plasmon Resonance Properties of Magnetite@Au Magnetoplasmonic Nanoparticles
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): N. Ahmadi, R. Poursalehi, M.K. Moravvej Farshi Magnetoplasmonics based on Composite nanostructure, has been used in sensing, optical devices and optical switching. Magnetite@Au core@shell nanostructure exhibits both plasmonic and magnetic properties and holds promise for using in biomedical applications. The ability to control optical properties of magnetite@Au over a broad spectral range and adjustable composite thickness make these nanostructures an important subject for magnetoplasmonic studies. In this research, interparticle coupl...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Effects of Gate Oxide Materials on Electrical Performance of Amorphous Ingazno thin Film Transistors: An Analytical Survey
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): M. Ghaneii, M.H. Shahrokh Abadi Three different oxides, including SiO2, HfLaO, and TiO2, were considered as the gate oxide (GOX) of an Amorphous Indium Gallium Zinc Oxide Thin-Film Transistor (a-IGZO TFT) and the electrical performance of the device was analytically studied using Atlas Silvaco®. The device was simulated in 2D environment and the ratio of the on- to off-state current, the subthreshold swing (SS), and the threshold voltage (V th ) of the device were investigated using individual oxides. The results are shown that signifi...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Influence of Ag/Cu Substitution on Structural Effect of New High Temperature Superconductor Y3Ba5Cu8O18
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): N. Zarabinia, V. Daadmehr, F. Shahbaz Tehrani, M. Abbasi The class of superconductors ceramic materials has been made from copper oxides mixed with rare earth elements such as yttrium. The new Y-based high temperature superconductor Y3Ba5Cu8O18-δ (Y358), Gholipour et al. (2012), Tavana et al. (2010), Khosroabadi et al.(2014), with Ag/Cu substitution was synthesized through the sol-gel technique by making nano oxide Y, Ba, Cu and Ag. The influence of the doping of Ag atoms into the compound Y3Ba5Cu8O18 was studied by employing XRD pa...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
The Influence of La and Ho Substitution on Structural, Micro Structural and Magnetic Properties of Bifeo3 Nanopowders
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): M. Rahimkhani, D. Sanavi Khoshnood In this work, Bi0.85-xLa0.15HoxFeO3 (BLHxFO) nanoparticles with varying x from 0 to 0.25 were successfully synthesized by a sol-gel method. The structural, microstructural and magnetic properties of BLHxFO nanoparticles have been investigated, using X-ray diffraction, field emission scanning electron microscopy (FE-SEM) and magnetometry measurements at room temperature. X-ray diffraction pattern of BLHxFO indicates a phase transition from rhombohedral (R3c space group) to orthorhombic for x > 0.1...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Study on the Magnetic and Microwave Properties of Electrophoretically Deposited Nano-Fe3O4 on Carbon Fiber
In this study production of MCCFs composites using electrophoretic deposition (EPD) technique has been investigated. For this purpose, the Fe3O4 nanoparticles with an average size of 50nm were synthesized by reduction of Fe (III)-tri-ethanolamine in an aqueous alkaline solution and then a uniform and compact Fe3O4 thin-film was coated on the surface of nitric acid treated carbon fiber by EPD method. The crystal structure, morphology and particle size distribution of the powders and composites were examined using the X-ray diffraction (XRD), scanning electron microscopy (SEM) and dynamic light scattering (DLS) techniques, r...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Biosynthesis and In-vitro Study of Gold Nanoparticles Using Mentha and Pelargonium Extracts
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): A. Jafarizad, K. Safaee, S. Gharibian, Y. Omidi, D. Ekinci By green synthesis method utilization and using two plants, Mentha and Pelargonium plant extracts, gold nanoparticles were synthesized. For medical applications gold nanoparticles performance was observed in PBS media which is as like as human blood. Important features of green synthesized gold nanoparticles were measured using, GC-MS, UV-vis, FESEM, DLS and FT-IR. Main goal of this research was investigating reducing and stabilizing effects of mentioned plants, which was c...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Characterization of Biodegradable P3HB/HA Nanocomposite Scaffold for Bone Tissue Engineering
This study is based on synthesize of Nano Hydroxyapatite particles and fabrication of Poly3-hydroxybutyrate/nano hydroxyapatite composite (P3HB/nHA) scaffolds by solvent casting and Salt leaching technique. Poly(3-hydroxybutyrate) was reinforced with different weight ratio of nano hydroxyapatite (nHA) (0-10wt.%) and then NaCl particles(70, 80 and 90wt.%) were added as spacer agent to make it porous scaffold. Nanoparticles were evaluated by TEM and XRD analysis. According to scanning electron microscope (SEM) observation, the pore size of scaffold was 200-250μm. The morphology and distribution of pores in prepared scaffold...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Investigation of Nano Bacterial Cellulose Coated by Sesamum Oil for Wound Dressing Application
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): A. Meftahi, D. Nasrolahi, V. Babaeipour, S. Alibakhshi, S. Shahbazi Bacterial cellulose (BC) as a nano fiber hydrogel has many applications in burn treatment and traditionally Sesamum oil was used for this purpose. Accordingly in this research we used purified bacterial cellulose layers which coated by Sesamum oil. The bending property and wettability of specimens were evaluated and the morphology of BC was characterized by AFM and SEM. The obtained result indicated that the amount of bending in coated layer with Sesamum oil is 50%...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Effect of Purification on Nano Microbial Cellulose Pellicle Properties
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): A. Meftahi, R. Khajavi, A. Rashidi, M.K. Rahimi, A. Bahador Nano Microbial Cellulose (NMC) is one of the most effective biopolymer in treating the injury. It has many applications in medical field due to unique properties such as high water absorption, compatibility with body and transparency for medical examination. Accordingly, this research attempts to evaluate the characteristic of raw and purified microbial cellulose for medical usage. The chemical and physical structure of microbial cellulose layer was assessed by FTIR and XR...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Nanosized Chitosan Hydrogels Containing Sumac Extract for Antimicrobial Biofinishing of Cotton Fabric, Preparation and Characterization
The objective of this research was to formulate chitosan nano hydrogels based on mini-emulsion method. Sumac extract was obtained by maceration sumac cortex in water. The antimicrobial effects of finished fabrics and sumac extract against two pathogenic microorganisms, Staphylococcus aureus and Escherichia coli, the particle size, were then observed by using different methods like antimicrobial test and SEM. Antimicrobial potential of hydrogels was influenced significantly by the concentration of sumac extract. Chitosan nanoparticles with about 60nm in diameter were fabricated via emulsion method. This approach opens new h...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Evaluate of Different Bioactive Glass on Mechanical Properties of Nanocomposites Prepared Using Electrospinning Method
In this study, electrospun Polycaprolactone-Bioactive glass (BGs) nanocomposite were produced using electrospinning method. Three bioactive glass were selected based on SiO2-CaO-SrO-P2O5 system with exchange of SrO content was substituted for CaO and the other glass was 45S5. The morphology of electrospun nanofibers were evaluated using scanning electron microscopy (SEM). Data were statistically analyzed and compared between groups using ANOVA. The results revealed that BGs with a good dispersion and distribution in the nanofibers web increases the mechanical properteis compared with pure Polycaprolactone (PCL), but the 45...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Effect of Nanohydroxyapatite Addition on the Pore Morphology and Mechanical Properties of Freeze Cast Hydroxyapatite Scaffolds
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): Z. Kaviani, A. Zamanian In current study, the effect of nanohydroxyapatite (nHA) content on microstructural and mechanical properties of hydroxyapatite scaffolds fabricated using the water-based freeze casting method has been investigated. In the experimental procedure, the solidified samples were prepared by hydroxyapatite slurries containing different concentration of nHA followed by sintering procedure at 1350°C. The characteristics of the initial powders, microstructure, and mechanical strength of the scaffolds were assessed by X-ra...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
Influence of Spark Plasma Sintering and Baghdadite Powder on Mechanical Properties of Hydroxyapatite
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): A. Khandan, E. Karamian, M. Mehdikhani-Nahrkhalaji, H. Mirmohammadi, A. Farzadi, N. Ozada, B. Heidarshenas, K. Zamani Since hydroxyapatite-based materials have similar composition and crystallinity as natural calcified tissues, can be used for bone/tissue engineering. In the present study a novel nanocomposite based on bioceramics such as Natural Hydroxyapatite (NHA) and Baghdadite (BAG), was sintered by spark plasma sintering (SPS) technique. The prepared composite was characterized using scanning electron microscopy (SEM), ...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
A Novel Nano-Fiber of Iranian Gum Tragacanth-Polyvinyl Alcohol/Nanoclay Composite for Wound Healing Applications
Publication date: 2015 Source:Procedia Materials Science, Volume 11 Author(s): H. Amiri Heydary, E. Karamian, E. Poorazizi, A. Khandan, J. Heydaripour The fibers with smaller pores and higher surface area than regular fibers have enormous applications in tissue scaffolds, protective clothing, and wound healing. Iranian Gum Tragacanth (IGT) is the most common natural polymers which has found with lots of applications recently, and has attractive characteristic like nontoxic nature, biodegradability, higher resistance, antibacterial and good biological properties to bacterial attacks. In the current work, poly ...
Source: Procedia Materials Science - November 8, 2015 Category: Materials Science Source Type: research
