LAUSR

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 to the pre-patterned shape through the concentrated electric field caused by singularity between the spinneret and the printed patterns. 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/micro structures can be successfully realized by 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, the sharp edged three-dimensional microstructures were fabricated by carrying out the electrospinning on the patterns with various angled 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.