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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.

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This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992
Pages:

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