Nanoparticles/Nanopowder

Nanoparticles/Nanopowder start to be very popular over the last decade. What are these tiny materials? A nanoparticle/nanopowder (nanocluster or nanocrystal) means that a microscopic particle. It was at least one dimension less than 100 nm. Several area such as biomedical, optical, and electronic fields use these materials in wide variety of potential applications. Current several scientific research mainly concentrated on these materials. Since their size are nearly nanoscale and as the percentage of atoms at the surface of a material becomes significant the properties of materials change. Moreover, when it was compared with the bulk material, nanoparticle/nanopowder exhibits a number of special properties. Another key property is that nanoparticles/nanopowder have a very high surface area to volume ratio.Thanks to this property, nanoparticles/nanopowder have a tremendous driving force for diffusion ability, especially at elevated temperatures. They also have unique optical properties. Nanoparticles/Nanopowder often possess unexpected optical properties as they are small enough to confine their electrons and produce quantum effects. Besides these very important properties, suspensions of nanoparticles/nanopowder are possible. This property is very important and necessary for chemical studies. Since the interaction of the particle surface with the solvent is strong enough to overcome density differences, which otherwise usually result in a material either sinking or floating in a liquid. Finally, nanoparticles/nanopowder with one half hydrophilic and the other half hydrophobic are named as “Janus particles” and are particularly effective for stabilizing emulsions. They can self-assemble at water/oil interfaces and act as solid surfactants. To sum up, nanopartiles can be called as the materials of 21st century . Therfore, scientific research on nanoparticles/nanopowder is intense as they have many potential applications in medicine, optics, and electronics.

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Carbon Nanotube Threads

Since its discovery, carbon nanotube (CNT) has attracted many interests in different technology fields due to its extraordinary properties. Properties such as, high strength, great electrical and thermal conductivity, light weight and flexibility made CNT one of the best materials for wide range of applications. However, from its name it can be understood that CNT is a nanoscale material which is very small to be applied for the production of daily products. Researchers all around the world are working on finding methods and techniques which could produce new materials with the extraordinary properties of CNT. Image retrieved from: https://worldindustrialreporter.com/strong-light-flexible-carbon-nanotubes-threads-with-ultrahigh-conductivity/ One of these research is focusing on the production of high strength threads that can be used in the manufacturing of fabrics, cables and ropes. An international group of scientists were able to produce a flexible conductive thread that i

Multi Walled Carbon Nanotube Dispersions

Carbon nanotubes (CNTs) have attracted enormous attention in recent years due to its unique physical, electronic, optical and potential applications in materials science and nanotechnology. The van der Waals interaction between tubes, however, makes CNTs aggregate in most organic solvents and aqueous solutions, which is the major limitation of their practical applications.Various approaches have been studied to alter the CNT surface to promote the dispersion of individual nanotubes and prevent their reaggregation. On the basis of this widely accepted viewpoint, numerous techniques such as covalent bonding, surfactant coating and polymer wrapping have been developed for surface modification or sidewall functionalization.These methods, however, are complicated, time-consuming and cause permanent damage to the CNT structure and properties of the surface, which produces residues of the dispersion agent for the final product. Figure: Single Walled Carbon Nanotube (SWCNT) It has re

Magnesium Oxide Nanoparticles/Nanopowder and Applications

General Information about Magnesium Oxide Magnesium oxide which has the chemical formula of MgO, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of Magnesium. It is a white powder at room temperature. Magnesium Oxide has very high melting point (2825 o C) and boiling point (3600 o C). Magnesium Oxide Nanoparticles/Nanopowder and Usage Areas Magnesium Oxide nanoparticles/nanopowder can be used in many different areas. For example Magnesium Oxide nanoparticles/nanopowder are used as a fire retardant for chemical fiber and plastics trades. For making crucible, smelter, insulated conduit, electrode bar, and electrode sheet Magnesium Oxide Nanoparticles/Nanopowder can be used as electric insulating material. Magnesium Oxide nan

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