Dear Magdalena,

Thank you for your answer, just to make sure I understand properly; you suggest I replace the tape for the exfoliation process (used for picking up from the single crystal and doing the folding and unfolding of the tape) with the one you suggest?

But then what exactly?

Should I directly put it in contact with the commercial PDMS? Do I need to do any treatment for the PDMS before putting the tape in contact with it? Should I leave it for some time before trying to peel off the tape? How fast I should peel of the tape from the PDMS? Quickly or slow?

Your help is highly appreciated Magdalena D. Tamulewicz-Szwajkowska

Dear Magdalena,

Thanks for these useful insights. Highly appreciated,

Best regards,

Hi

do you find the answer of your problem , do share it please as i am also having the same problem.

Kaynat Alvi Not really, a colleague suggested a special type of tape, which I purchased but not that much difference than the blue tape everyone is using.

What I tried is to anneal the PDMS @ 60 C for few seconds with the tape in contact with it, then peel it off quickly, that helped a bit, but could also leaves residues from the tape on the 2D flakes.

Hope that helps.

Thanks for sharing.

I have done the same using Nitro tape.

Hi,

I'm also confused about this problem. Do you find the answer?

Here is my method:

1.Prepare a high-quality crystal and exfoliate it using Blue tape.

2.Put the tape directly on PDMS(PDMS and the tape should be kept flat).

3.Press the tape gently for about one minute.(You can anneal the PDMS/tape to make it flat, but don't peel the tape off without cooling.)

4.Peel the tape quickly.(The faster the peeling, the stronger the adhesion of PDMS)

I learned this method from the Internet. Sometimes it works,sometimes it doesn't. I want to know if there are other methods, or am I wrong?(I'm not good at step 1, do you have any suggestions?)