Complex routes a broader fiber with diameter is smaller. Greatly and the round of skew arch has more to stretch into solution line that small, together with the evaporation of solvent. Finally, the fiber with small diameter in the nanometer range [2].Artificial fiber has to look in many forms. And diameters as well as the continuation of the fibers were different. Depending on various factors. Which can be divided into the parameters that affect the fiber characteristics as 3 group 1) variables of melt on properties but that species. 2) variable in the system consists of the electric potential, the flow rate of solution, temperature of each pattern. The type of substrate when the distance between the end of the needle and material support. The size and diameter of metal needle 3 soon Valley Middle) environment such as temperature and humidity, etc.
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