Does DMSO delaminate graphene or just peel it off from the substrate (SiO2)?

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Thomas Pozegic

To answer the title, check the 2D peak using Raman spectroscopy whether you have a single layer graphene. If it is a single peak, you have a single layer, otherwise it is multi-layered.

Liu Beiyun

I have not used DMSO , but some reagents have strong surface tension on the graphene, which could damage the material. You can try to reduce the soaking time and avoid cleaning the graphene with deionized water.