rotating collections the cross section view revealed hollow structures with wall thicknesses around a few microns we also observed under certain spinning conditions an interesting micro porous structure on the fiber wall with the major goal of producing smaller hollow fibers in mind we successfully prepared hollow fibers of 20 60 microns in diameter a significant reduction compared to those reported from previous works with the reduction in diameter an estimated 5 to 10 fold increase of surface area could be achieved for more cell attachment and hence a better neurite connection environment also an interesting micro porous structure of the fiber wall was observed which might be a significant advantage as a source for nutrient permeation and or metabolic waste disposal as suggested by several researchers the formation of this wall structure may well be due to the solvent employed in the electrospinning process it was observed previously that fast solvent vaporization during the process could generate such porous wall we also tried to achieve similar structures via different schemes e g by leaching out the pore genic materials added within polymer with the addition of the water soluble particle such as glucose we were able to make the fiber walls porous right after the hollow fibers were collected one major advantage of this approach is the better control of the pore size by selecting different sizes of these pore genic particles the observed smaller randomly distributed.