서강대학교

초록/요약

In this paper, we characterized the behavior of polymer jet from near-field electrospinning onto the inkjet patterned paper with conductive Ag nanoparticles in order to form the controlled three-dimensional nanostructures. Using inkjet patterned paper with conductive ink as a collector, the polymer jet is induced in the pre-patterned shape through a concentrated electric field caused by singularity between the spinneret and the printed pattern. Due to the electric field enhancement of the deposited electrospun fiber, an additionally spun fiber can be stacked on the deposited fibers directly. Therefore, the controlled three-dimensional nano/microstructures can be successfully realized with the proposed method. We characterized the deposition of the electrospun fiber according to the distance between the inkjet printed pattern and the spinneret. In addition, a three-dimensional structures having sharp edges were fabricated by performing electrospinning on a patterns with various angled sharp edges. A CCD camera was used to observe the behavior of the polymer jet, and the SEM image was analyzed to confirm that the fibers are stacked as desired.