Abstract: Abstract: The orientation of nano fiber good mechanical properties, dimension stability, and has favorable interference for the cell proliferation and adhesion. The improvement of its performance is more and more effective with the sample orientation degree rising. The sample orientation characteristics can be extracted from FFT frequency image[1-2].Based on method of a certain radius of the round . This paper makes the gray summation along the radius of different direction angle. The spectral intensity distribution of different direction angle is obtained. From curve-fitting, peak curve characteristics are extracted, and it can be used to describe effect.

Key words: electrospinning, Fourier transform, fiber orientation, quantitative description