| 초록 |
Transformation of a 2D electronics into a 3D is a promising method to realize a high-performance 3D electronics. For the successful transformation, not only the electronic device must be flexible, but also an engineering of the stress/strain applied to the device is required. Here, we propose a transforming method of a 2D electronics by engineering the mechanical properties of the acrylonitrile-butadiene-styrene (ABS) film using a solvent plasticizer. We used two solvents, acetone and N,N-dimethylformamide for comparison, and the plasticizer is injected through a microchannel. The modulus of plasticized ABS film reduced down by three orders of magnitude and elongation at break increased up to 240%. Mechanical simulation in a viscoplastic mode that such transition from hard to soft together with the ability of reflow of the plasticized region enables stability of electronic device during extreme folding. Finally, we successfully developed polyhedral LED array based on this method. |
