Koushik Kumar

2 Questions 1 Answers 0 Followers

Questions related from Koushik Kumar

What is the best mask against HF:HNO3:H2O=1:1:1 ?

I am trying to selectively etch ~75 nm of Ta. I am currently not able o use dry etch (instrument down). I have seen in the literature that HF:HNO3:H2O mixture can remove Ta by forming tantalic...

09 January 2025 2,943 0 View

Metal not lifting off properly?

I am trying to make very small gap (preferebly ~100 nm)electrodes. My recipe roughly is: 1. Cleaning SiO2 with acetone and ipa 2. Dehydration bake @180C for 1 min 3. Spin coat PMMA A4 @3k rpm for...

07 February 2024 3,560 1 View