Guide: Viscoelastic Transfer of 2D Material Using PDMS
Posted on Thu, Aug 15, 2019 by Tom Armes
Viscoelastic transfer using polydimethylsiloxane (PDMS) stamps is one of the methods used for the deterministic placement of 2D materials and the fabrication of van der Waals heterostructures. PDMS-based transfer offers a fast and convenient way of depositing monolayer flakes of 2D materials onto virtually any substrate and, unlike other methods, does not require the use of wet chemistry.
This written, and accompanying video guide takes you through the full process including:
- Preparation of the PDMS stamp
- Mechanical exfoliation of the 2D material
- Flake search and thickness identification.
- Target substrate cleaning
- Initial alignment
- Deterministic Transfer