Roksana Bavand

4 Questions 2 Answers 0 Followers

Questions related from Roksana Bavand

Does anyone know if there is any correlations between thickness of the thin film and poor adhesion of the film to the substrate?

I deposit Ag on Si substrates using thermal evaporation technique and the thickness results are not consistent. Scotch tape test has shown that the adhesion of Ag to the substrate is quite poor. I...

06 April 2021 6,189 5 View

Does anyone know of the reason for streaks (or skipping) issue of a AFM scan (image attached)?

I measure the step height of various films including metals and organics using AFM, but this skipping issue (or jumping, not sure what it is called) only occurs on Ag films. I have verified...

31 March 2021 4,900 3 View

Does anyone know whether a crystalline thin film could tolerate the stress better or an amorphous thin film?

The source of the stress could be related to the further processing on top of the the thin film such as coating with resist, stripping the resist, baking, UV exposure, or oxygen plasma.

06 November 2018 6,121 3 View

Why does the morphology of grey cast iron change to spherical by adding Magnesium and Sulfur?

Grey cast iron has a small amount of graphite that shouldn't be in nodular shape. By adding Magnesium (with less amount of Calcium) and Sulfur, the morphology changes to spherical. This morphology...

05 May 2016 4,012 3 View