I am trying to deposit some magneto impedance thin film sandwich structures and I was wondering if I can skip the photolithography step and make use of Kapton tape instead. Let me know if anyone has any experience with using Kapton tape for masks.
Can kapton tape be used to lift-off material? yes. But if it is going to be useful for your specific application, that is something you will have to test. Assuming you don't use any chemicals that react either with kapton or the adhesive layer, no high temperature processes, and you don't need any high resolution feature, Kapton tape lift-off works reasonably good. I use kapton tape to create steps, for example on thermally evaporated (see attached), sputtered, and sometimes ALD deposited films so that I can measure the thickness with profilometry or AFM. Apart from the low feature resolution, kapton tape adhesive is not as easy to remove as photoresist, so if you need a completely clean surface, you will not necessarily save time using kapton tape.
Hey Alex Paul , you absolutely can. Another method i've used with success is to develop a shadow mask. This can me milled from copper or stainless steel and then attached to your substrate during deposition. Depending on the thickness of your materials you would need to consider the height of the mask as well. This is assuming you don't have strict requirements for line edge roughness :)
Good luck!
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