An ellipsometry study of silica nanoparticle layers at the water surface

Zang, Duyang; Stocco, Antonio; Langevin, Dominique; Wei, Bingbo; Binks, Bernard P.

Abstract

We have studied silica nanoparticle layers spread at the air/water interface. The surface pressure of the layers has been determined in a Langmuir trough via two orthogonal Wilhelmy plates. We observed significant differences in surface pressure according to the preparation protocol: layers spread then compressed or layers obtained after successive spreading steps. We also studied the two types of layers by multiple angle of incidence ellipsometry. We introduce a two-layer model which enables us to evaluate the radius of interfacial aggregates and their contact angle with the air/water interface.

Citation

Zang, D., Stocco, A., Langevin, D., Wei, B., & Binks, B. P. (2009). An ellipsometry study of silica nanoparticle layers at the water surface. Physical chemistry chemical physics : PCCP, 11(41), 9522-9529. https://doi.org/10.1039/b907903c

• Journal Article Type: Article
• Acceptance Date: Aug 21, 2009
• Online Publication Date: Sep 16, 2009
• Publication Date: Oct 22, 2009
• Journal: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
• Print ISSN: 1463-9076
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 41
• Pages: 9522-9529
• DOI: https://doi.org/10.1039/b907903c
• Keywords: Physical and Theoretical Chemistry; General Physics and Astronomy
• Public URL: https://hull-repository.worktribe.com/output/391142