Nano supercapacitors and ( dielectric properties or electrical insulation)
Researcher and author: Dr. ( Afshin Rashid)
Note: In ( nano supercapacitors) , dielectric is an electrical insulator that can be polarized by applying an electric field. In the structure ( nano supercapacitors), the ideal dielectric has no free charge. When a dielectric is placed in an external electric field, the induced free charges that moved to the surface in the conductors and made the charge density and the internal electric field zero, no longer exist. But because the dielectric ( nano supercapacitors) has a limited charge, it cannot be concluded that they have no effect on the electric field placed in it.
Due to the low dielectric thickness in the structure ( nano-supercapacitors) , a larger electric field can be created with a low voltage on the inner electrode ( nano-supercapacitors) . Despite the more complicated fabrication process than 3D internal electrodes ( nanosupercapacitors) , the above advantages make this type preferred. In the internal electrode structure based on dielectric, all ( nano supercapacitors) on a wafer are turned off and on at the same time, because they have dielectric properties. They are the same on the internal electrodes. The thickness of the oxide layer is high, and on the other hand, the production process is such that the dielectric contact surface of all ( nano supercapacitors) with the gate oxide is low and it creates a problem to turn the part on and off with low voltage.
( Nano supercapacitors) are a fixed type of capacitors, which means that these capacitors use a fixed capacitor (capacitor means the ability to hold or store electric charge). In other words, in the structure ( nano supercapacitors), it is a type of fixed capacitor that stores a fixed amount of electric charge.
In the structure ( nano supercapacitors), it is made by taking two or more nano aluminum sheets and placing a nano electrode between them. The nano electrode is placed between the nano aluminum sheets as a dielectric and the nano aluminum sheets act as electrodes. Nano electrode is a poor conductor of electricity, so it does not allow electric current or electric charge to flow between two aluminum nano plates. However, the nanoelectrode allows the electric field to be stored through it. Therefore, the nano electrode placed between nano aluminum sheets prevents the electric current. Nano electrode And the nano aluminum sheets are rolled into a cylindrical shape and the wire wires are connected to both ends of the nano aluminum sheets. The entire cylinder is then covered with wax or plastic resin to protect it from moisture in the air. Nano supercapacitors and ( dielectric properties or electrical insulation) are used in high voltage and high current applications.
Conclusion :
In ( nano-supercapacitors) , the dielectric is an electrical insulator that can be polarized by applying an electric field. In the structure ( nano supercapacitors), the ideal dielectric has no free charge. When a dielectric is placed in an external electric field, the induced free charges that moved to the surface in the conductors and made the charge density and the internal electric field zero, no longer exist. But because the dielectric ( nano supercapacitors) has a limited charge, it cannot be concluded that they have no effect on the electric field placed in it.
Specialized doctorate in nano-microelectronics