Lateral Non-covalent Clamping of Graphene at the Edges Using a Lipid Scaffold

Developing
a clean handling and transfer process, capable of preserving
the integrity of two-dimensional materials, is still a challenge.
Here, we present a flexible, dynamic, and lipid-based scaffold that
clamps graphene at the edges providing a practical, simple, and clean
graphene manipulation and transfer method. Lipid films with different
surface pressures are deposited at the air/copper-etchant interface
immediately after placing the graphene samples. We show that at surface
pressures above 30 mN/m, the lateral support prevents graphene movement
and cracking during all etching and transfer. The method provides
new insights into the handling of graphene and can yield efficient,
sensitive, and clean graphene-based devices.