A Mild and Efficient Transfer Method of Two-dimensional Materials for the Third Generation DNA Sequencing
Nanopore-based devices are emerging as unique technique for fast and high-resolution detection of DNA bases. Recently, the two-dimensional (2D) materials have been identified as promising materials for nanopore devices due to its high sensitivity and label-free sensing of DNA bases. It is really challenging to transfer nanoscale film structure onto target substrates to fabricate nanopore devices of 2D materials. Herein, we report a mild and efficient transfer method based on the mediator of poly-propylene carbonate and elastic stamp. Through this method, most of the 2D materials are able to be transferred onto fragile substrates without hurting the substrate. Experimental observation shows that fabricated nanostructures adhere to the surface of substrates closely free of wrinkles and bubbles. Moreover, this method enables the fabrication of multilayered structures of complimentary 2D materials and offers the potential method to fabricate functionalized devices.
