Nanofiber layers have privileged properties such as fine fiber diameter, small pores,
suitable relationship between pores, special surface area and high porosity. These
properties make nanofibers applicable for a variety of applications, such as
high-performance filters and tissue engineering scaffolds. Different applications of
electrospinning layers require different porosities. Therefore, it is very important to
measure the porosity of nanofiber layers to express their application. To date, many
methods have been expressed for this purpose, but all methods have disadvantages.
Therefore, presenting the best method is a challenge that will be addressed in this project.