Abstract We demonstrated an all-dry polymer-to-polymer transfer technique for two-dimensional (2D) crystal flakes using a polyvinyl chloride (PVC) layer deposited on a piece of polydimethylsiloxane (PDMS).Unexpectedly, the pickup/release temperatures were modified in wider temperature range simply by changing the thickness of the PVC layer than changing the plasticizer ratio.Utilizing the difference in the pickup/release temperatures depending on the PVC film thickness, 2D flakes were transferred from a thicker PVC film to a thinner one.This polymer-to-polymer iphone 13 pro max price florida transfer technique can be utilized to flip over van der Waals heterostructures.
As a demonstration, we fabricated a mountain-like stacked structure of hexagonal boron nitride flakes using the nyx 22 brush flip-over stacking technique.Finally, we compared the results of thermomechanical analysis with the pickup/release temperatures of the PVC/PDMS stamp.The PVC was revealed to be at the glass transition and in the viscoelastic flow regimes when the 2D flakes were picked up and dry released, respectively.Our polymer-to-polymer transfer method facilitates flip-over van der Waals stacking in an all-dry manner, expanding the possibility of 2D materials device fabrications.