An ellipsometry study of silica nanoparticle layers at the water surface
Zang, Duyang; Stocco, Antonio; Langevin, Dominique; Wei, Bingbo; Binks, Bernard P.
Professor Bernard P Binks B.P.Binks@hull.ac.uk
Professor of Physical Chemistry
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.
|Journal Article Type||Article|
|Publication Date||Oct 22, 2009|
|Journal||PHYSICAL CHEMISTRY CHEMICAL PHYSICS|
|Publisher||Royal Society of Chemistry|
|Peer Reviewed||Peer Reviewed|
|APA6 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. doi:10.1039/b907903c|
|Keywords||Physical and Theoretical Chemistry; General Physics and Astronomy|
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