Extended Data Fig. 1: Sample fabrication.
From: Imaging inter-valley coherent order in magic-angle twisted trilayer graphene
a–f, Gold coated PDMS assisted flipping. A stack with PC film is peeled off from a PDMS block (a). A separate PDMS block is Ti/Au coated (b). Then the stack is put down to the gold coated PDMS (c). PC film is dissoved by NMP (d), before the stack is dropped down to a substrate (e,f). g–i, A gold stamp is prepared. A mould is defined by photolithography (g). PDMS is poured on the mould (h), and peeled off. Au is deposited on the stamp (i). j,k, The gold stamp is pressed down onto a desired area of the sample (j), leaving a gold strip that connects the sample and a pre-patterned electrode on the substrate (k).
