Storage and Memories in Nanoelectronics (Micro-Nanoelectronic)

Note: Nanoelectronics offers a new approach to the electronics industry in the field of new types of circuits, processors, methods of storing information, and even new optoelectronic methods for transmitting information.

Storage and memories in micro-nanoelectronics:

In the process of building a computer or any other electronic device, it is important to accumulate and store information on a temporary or long-term basis. Information is stored in memory chips, and various types of them have been used since the advent of magnetic core memories. In fact, the increase in memory capacity - that is, the amount of information that can be stored in a given volume of space - has been increasing even faster than Moore's Law curve for transistor density .

Hard disk drives rely on magnets, with information stored on a disk in the form of magnetic polarization and read or written by a special head (tip) as the disk rotates. The phenomenon at work here is called giant magnetoresistance, which refers to the effect of magnetic fields on electrical resistance. Depending on the magnetic polarization (whether the data bit is a one or a zero), the electrical currents recorded by the read head will vary.

Nanoelectronics and new memories

By using nanostructures, the size of memory bits can be reduced substantially, thereby increasing the density and efficiency of magnetic memory and reducing its cost and availability. Nanolithography methods are already being used to create some very powerful memories.

Nanoscience and technology offer different memory possibilities. For example, photorefractive materials represent just one type of optical memory. CDs and DVDs, which are used to record music and movies, are themselves a type of optical technology that is read using a laser.

In fact, using nanotechnology, it is possible to increase the storage capacity of information by a thousand times or more. Information storage is a very important and necessary topic that can be done in various ways.

Conventional magnetic and optical memories are mostly two-dimensional and are based on a flat surface. Memories such as all-write memories and refractive memories are based on the interaction of light and matter. In such memories, information is stored by changing molecular states with high-intensity laser fields. Lasers are used to write information into the memory, that is, information that can be changed with higher-intensity laser radiation or read with lower-intensity light. One of the most striking advantages of such optical nanostructures is that they can exist in three dimensions, since not only the surface but also the bulk of the material is read. This could lead to higher efficiencies and storage capacity in optical memories.

Nanoelectronics is a new approach to the electronics industry in the field of new types of circuits, processors, methods of storing information, and even new optoelectronic methods for transmitting information .