(Nanofiber) Nanofiber Structure and Applications (PhD in Nano-Microelectronics)
Researcher and author: Dr. ( Afshin Rashid)
(Nanofiber) Nanofiber is a term for fibers less than 500 nanometers in diameter. When the diameter of polymer fibers is reduced from a micron to a few hundred nanometers, they can achieve amazing properties such as a very high surface-to-volume ratio - good flexibility and high mechanical performance.
The main property of fibers is a very high ratio of length to diameter. Micron fibers are fibers in which the filaments are less than one denier in mass per gram per 9,000 meters less than one micrometer called nanofibers . These fibers with relatively short lengths of several microns and a diameter of less than 500 nanometers, like nanowires, are a variety of one-dimensional structures. In general, there are several methods for the production of nanofibers, some of which include the method of stretching, separation of multi-component fibers, molding method, blowing, fuzzy separation, self- assembly of macromolecules, electrolysis and so on. Risna produces polymer fibers with a diameter below nanometers.
In total, nanofibers are defined as one-dimensional nanomaterials that have a diameter of less than 1 micrometer (1000 nanometers) and a aspect ratio (length to diameter ratio) greater than 100. These fibers are also referred to in some sources as superfine or ultrathin. When the fibers are in the range of 100 to 1000 nanometers in diameter, they are also called sub-micron fibers. In diameters between 5 and 500 nm, nanofibers have a surface area between 10 and 1000 m2 / g.Electrospinning and vapor grown carbon fibers are known as the two main classes of functional nanofibers that can be used in a wide range of applications with strength, insulation, electrical, and filter performance. And have medicine. High control of fiber shape and high diversity, both in raw materials and in the final form are the characteristics of electrospinning method and very good mechanical, thermal and electrical properties with low cost are the main characteristics of nanofibers.
Conclusion :
In general, nanofibers are defined as one-dimensional nanomaterials that have a diameter of less than 1 micrometer (1000 nanometers) and a aspect ratio (length to diameter ratio) greater than 100. These fibers are also referred to in some sources as Superfine or Ultrathin.
Researcher and author: Dr. ( Afshin Rashid)
PhD in Nano-Microelectronics