I measured the Thickness of the thin film using ellipsometry. But, now i want to study the swelling of thin film using 500 ul liquidCell alpha ellipsometry. Looking for some reference papers and suggestions on how to approach this?
Sourav Sutradhar LiquidCell preparation involves selecting a substrate(Nafion can be deposited on various substrates like silicon, gold, or ITO, depending on the specific application), cleaning it thoroughly, and defining the desired cell size and shape. Nafion film deposition and characterization involve depositing a thin film using methods like spin coating or spray coating. A swelling experiment involves introducing a solvent/electrolyte solution into the liquid cell, monitoring the film thickness in real-time, and collecting data at various temperatures. Data analysis and interpretation involve extracting changes in film thickness, refractive index, and other optical parameters, and calculating the swelling ratio.
Hi Alvena Shahid , Thank you for such information. I have made the nafion film on Silica wafer. Do you know which liquid should i use in these liquid cells for nafion film to measure the thickness, refractive index properties?
Sourav Sutradhar Deionized water (D.I H2O) is a cost-effective method for measuring the thickness change of a Nafion film due to swelling, without significantly interacting with Nafion. To measure the refractive index of both the Nafion film and the underlying silica wafer, a chemically compatible liquid with a known refractive index is needed, such as ethylene glycol (n ~ 1.430), isopropanol (n ~ 1.377), or silicone oil (n ~ 1.40-1.45), but compatibility with specific Nafion types must be verified.
Alvena Shahid Thank you again. I will give the update if I can measure that.
- Badges
- Science topic
- Similar topics
- Biological Science
- Anatomy
- Tissue