Figure 8: Fabrication procedure for generating co-patterned cell sheets using the micro-contact stamp technique developed by Whitesides et al. [24]. Laserablated polyimide film is used as the micro contact stamp, which is prepared inhouse using a microscope-equipped excimer-laser apparatus, and coated with PNIPAM-gelatin on non-ablated banks (1). PNIPAM-gelatin film was pressed onto the PNIPAM-coated substrate (2). Thus, a PNIPAM-coated substrate with regionally specific deposits of PNIPAM-gelatin can be prepared (3). Next, SMCs and ECs are deposited in the appropriate patterned regions (4). After culture, the resulting patterned cell sheets are transferred to a roller (5).