Metallurgy for Dummies

What are Copper Nanoparticles ?

Copper (Cu) Nanoparticles are black brown spherical high surface area metal particles. Nanoscale Copper Particles are typically 10-30 nanometers (nm) with specific surface area (SSA) in the 30 – 70 m2/g range and also available in with an average particle size of 70 -100 nm range with a specific surface area of approximately 5 – 10 m2/g.

Copper Nanopowder

Nano Copper Particles are also available in passivated and in Ultra high purity and high purity and carbon coated and dispersed forms. They are also available as a nanofluid through the AE Nanofluid production group. Nanofluids are generally defined as suspended nanoparticles in solution either using surfactant or surface charge technology. Nanofluid dispersion and coating selection technical guidance is also available.

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What is Magnetic Nanoparticle ?

When a piece of a magnetic material is made smaller and smaller, is acquires simpler magnetic domain structure since less domain walls are needed in order to minimize the stray field energy. The extreme limit is represented by single domain particles. Magnetic nanoparticles are useful for a wide range of applications from data storage to medicinal imaging.

Various flame spray conditions and their impact on the resulting nanoparticles

High capacity information storage, for instance, requires smaller particle size that decreasing the particle size lowers the anisotropy energy responsible for holding the magnetic moments along certain directions and it becomes comparable to the thermal energy. Thermal fluctuations randomize magentic moments (unless external magnetic field is applied), which is the essence of the so-called superparamagnetic behavior. Core/shell structured magnetic systems have an extra source of anisotropy that increases the stability of magnetic moments up to certain temperature called blocking temperature.

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