3D manipulation of 2D materials using micro-dome polymer.

08:00 EDT 10th March 2020 | BioPortfolio

Summary of "3D manipulation of 2D materials using micro-dome polymer."

We demonstrate 3D mechanical manipulations, such as sliding, rotating, folding, flipping, and exfoliating, of 2D materials using a micro-dome polymer (MDP) via in-situ real-time observation with an optical microscope. A dimethylpolysiloxane (PDMS)-based MDP is covered with a poly(vinyl chloride) (PVC) adhesion layer. This PVC-MDP structure enables us to achieve a small, and adjustable contact areas between the PVC-MDP and a 2D-material flake, which is typically between ~10 and ~100 μm in diameter. The adhesion between the PVC polymer and 2D materials is fully tunable with temperature: strong adhesion at ~70 °C allows pick-up of the 2D material, and release occurs at ~130 °C when the adhesion is weak. Thus, the PVC-MDP functions as a point-contact manipulator for 2D materials, permitting 3D manipulation of 2D-material flakes. Our method could facilitate the expansion of van der Waals heterostructure fabrication technology and the development of preparation techniques for more complex 3D structures.


Journal Details

This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992


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