Materials Literature
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A trilayer resistive memory with a low picojoule switching energy shows highly uniform current distribution, fast switching speed of 10 ns, and robust endurance cycling of 10 6 cycles under high-temperature (343 K) operation. Such good performance is related to high-temperature stable Ni electrode, fast electron hoppi…
Gold, silver and platinum nanoparticles were fabricated by a laser-induced breakdown technique of Au, Ag and Pt metal plates. On the other hand, bimetallic nanoalloys consisting of Au–Ag and Au–Pt have been synthesized by irradiation of the prepared nanoparticles under UV light, which leads to an alloy type of structu…
The structural and magnetic phase transformations that occur in the system of self-doped La1 − yPr y MnO3 + δ (δ ≈ 0.1, 0 ≤ y ≤ 1) manganites in the temperature range 4.2–300 K are studied by X-ray diffraction and measuring the temperature and field dependences of dc magnetization. The low-temperature magnetic phase t…
The electrical resistivity ρ and magnetization of La 0.8 Ca 0.2 MnO 3.06 , (La 0.8 Ca 0.2 ) 0.975 MnO 3.01 , and La 0.8 Ca 0.2 Mn 0.975O3.06 polycrystalline samples have been measured in magnetic fields 0 ≤ H ≤ 9 T at temperatures in the range 2 ≤ T ≤ 300 K. The results obtained for the first and second samples are ty…
This research aims to develop an injectable polymer-based, platform to enable minimally-invasive targeted delivery of bioactive nano particles. Studies have shown polymer-stabilized gas microbubbles to be effective in enhancing an ultrasound image, especially those involving cancerous tumors. These contrast agents can…
A catalytic combustion H2sensor has been fabricated by using MEMS technology. The application of hafnium oxide thin films as insulating layer has been deposited by electron beam evaporation. The semiconductor combustion catalyst tin oxide (SnO2) layer was prepared by chemical vapor deposition (CVD).It is a novel appli…
This paper presents a novel method for fabrication of silicon nanopore arrays. The proposed method comprises of an inductive coupled plasma (ICP) deep etching and a two-step anisotropic wet etching. A nanopore array with an average feature size of 55 nm and several individual rectangular nanopores with feature sizes a…
We consider the gapped graphene superlattice (SL) constructed in accordance with the Fibonacci rule. We propose to create the quasi-periodic modulation due to the difference in the values of the energy gap in different SL elements. It is shown that the effective splitting of the allowed bands and thereby forming a ser…
Over the past several decades, even with intensive research, it has still been difficult to achieve sufficient skin regeneration both functionally and for cosmetic satisfaction. Nanotechnology is a promising new approach to create new materials with enhanced biocompatibility and bioactivity with suitable mechanical pr…
This study aims to evaluate the effects of sintering temperature on the density and hardness of tetragonal zirconia polycrystals stabilized with 3 mol% 3Y-TZP dental ceramic type. Five cylindrical specimens were fabricated from zirconia powder of particle size 50 nm via colloidal processing. The specimens were sintere…
Receptor-ligand binding has been one of the more popular approaches to specifically targeting tumor cells. In this work, targeting efficiency was quantitatively characterized using silica particles functionalized with EpCAM antibodies and EpCAM-expressing BT-20 breast cancer cells. The effects of incubation time and p…
The implantable CNT-based sensor is suggested to detect CSPGs which is main compositions of glial scar which inhibit the axonal regeneration after spinal cord injury. The suggested sensor is fabricated using spin-coated polyimide and patterned by MEMS process. Multiwalled CNT networks are formed by air spray method on…
The electrochemical behavior of Ti-6Al-7Nb was investigated, and compared with that of Ti–6Al–4V alloy, which is commonly used as implant material, particularly for dentistry, orthopaedic and osteosynthesis applications. The aim of present study was to evaluate their corrosion resistance in an artificial physiological…
Lead slowing-down (LSD) spectrometers have a low energy resolution (about 30%), but their luminosity is 10 3 to 10 4 times higher than that of time-of-flight (TOF) spectrometers. A high luminosity of LSD spectrometers makes it possible to use them to measure neutron cross section for samples of mass about several micr…
To improve the compatibility and dispersion of the sepiolite in polymers, a surfactant of octadearyl dimethyl ammonium chloride（OTAC）was used to modify sepiolite. The experiment was used to analyze the effects of OTAC dosage, reaction temperature and reaction time on the wettability of organically-modified sepiolite.…
The current paper presents our new approach in synthesizing superparamagetic iron oxide nanoparticles. The Fe3O4nanoparticles (~500nm) are synthesized through carbon reduction method, which is a brand new method. The best parameters of this method are fixed through characterizing transmission electron microscope (TEM)…
Nano-sized -SiC nanoparticles were synthesized combined with a sol-gel process and a carbothermal process. TEOS and carbon black were used as starting materials for the silicon source and carbon source, respectively. SiO 2 nanoparticles were synthesized using a sol-gel technique (Stober process) combined with hydrolys…
SnO2 powders were prepared using a modified polyol synthesis method and subsequent calcinations. Well-dispersed spherical 2SnO∙(H2O) particles could be synthesized at room temperature through the modified polyol method using tin (II) 2-ethylhexanoate as the precusor, 1,2-propanediol as the solvent, PVP as the capping…
The optimum powder loading of feedstock based on an alumina–zirconia powder was investigated. The optimum powder loading were important to avoid any problems that may arise during the ceramic injection molding (CIM) process. The optimum powder loading is determined based on the critical powder loading and the characte…
Refractory paints based on silicon carbide were investigated with the alkali inorganic binders. In order to optimize the β-SiC granulometric distribution, different mixture of β-SiC along with metakaolin based geopolymers were used. The alkali activator was an aqueous solution NAOH/Na2SiO3. Metakaoline dissolved and r…