Nano wires are made and produced by the (galvano-static deposition) method.

Section _ reproduction and production of nanowires

Nano wires  are made and produced by the (galvano-static deposition) method.

Researcher  and author: Dr.   (   Afshin Rashid)

Note: Cobalt nanowires with a diameter of about 93 nm  are made using the electro-deposition technique on an aluminum mold, using the galvano-static deposition method. 

The aluminum mold is made through multi-stage (monodizing) pure aluminum sheet. Fabrication of arrays of vertical cobalt nanowires aligned on flat surfaces and field emission (FE) by using them as electron cathodes.  These arrays are made by electrodeposition in the form of nanoparticles on Au substrates. Ti/Si are obtained at very low temperature (<100°C).

After pattern removal, the arrays consist of structurally upright nanowires with high aspect ratios, uniform dimensions, and predetermined densities.  Electron field emission measurements of metallic properties and propagation of cobalt nanowires. In the reproduction of cobalt oxide nanotubes, cobalt nanowires embedded in alumina pattern are synthesized in air. 

Cobalt Nano Wire Cobalt Nano Wire  can  have the properties of insulation, semiconductor or metal.  Insulators do not carry electric charges, while metals have very good electric charges.  Semiconductors lie between the two and are charged under the right conditions.   By placing semiconductor wires in a suitable configuration, transistors can be made that either  act as switches  or  amplifiers  . Some of the interesting and anti-flexible properties of nanowires are due to their small scale.

Silicon nanowires are one of the best examples of semiconductor nanostructures that can be made as single crystals with a small diameter of 9 to 0 nm. The electromagnetic nature of nanoparticles in magnetic materials, the molecules and atoms that make them  have electromagnetic properties. In other words, elements such as iron, cobalt, nickel and their alloys  are attracted by magnets.  It is called magnetic material. The classification of electromagnetic materials is based on the magnetic receptivity (magnetization ability of the material). Based on this, materials are classified into three groups: ferromagnetism, paramagnetism, and diamagnetism. Therefore, the dipole moment in electromagnetic diamagnetic materials is zero, and in the presence of a magnetic field, a  dipole moment is induced in them; But the direction of these induced dipoles  is opposite to the direction of the external magnetic field, which causes the material (diamagnetism) to be repelled from the magnetic field.

By removing the external magnetic field, the magnetic property of these materials does not remain. The magnetic susceptibility of these materials is negative and very low (around 10-6 to 10-3). All gases (except oxygen) are water, silver, gold, copper, diamond, graphite, bismuth and many organic compounds ( diamagnetism). Magnetic dipoles  in paramagnetic material do not have a specific and regular orientation; As a result, these materials do not have magnetic properties. If they are placed in a magnetic field,  they will be arranged along the magnetic field lines. With the removal of the  magnetic field, the magnetic dipoles quickly return to their previous state in the absence of the field. In this way, paramagnetic materials acquire magnetic properties in strong nano-electromagnetic fields. 

Conclusion:

Cobalt nanowires with a diameter of about 93 nm   are made  using the electro-deposition technique on the aluminum mold of nanowires by the method   (galvano-static deposition) .

Researcher  and author: Dr.   (   Afshin Rashid)

Specialized doctorate in nano-microelectronics