Abstract
We studied the contact angle relaxation during the Langmuir-Blodgett deposition of cadmium stearate and valinomycin films. For cadmium, we found that the relaxation time of the receding contact angle depends strongly on the deposition type; the static value that the receding angle relaxes to depends on the concentration of Cd2+ ions in the subphase. For 4.0 × 10-2 M Cd2+ subphase, the deposition begins and remains Y-type. However, at a lower concentration of 2.5 × 10-3 M the deposition changes from Y- to X-type. Prior to this transition, the static receding angles for the two different Cd2+ concentrations are different but the relaxation times are about the same. After the transition, the relaxation process is more than 20 times faster. For valinomycin, the deposition is predominantly Z-type.
Original language | English (US) |
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Pages (from-to) | 351-357 |
Number of pages | 7 |
Journal | Thin Solid Films |
Volume | 202 |
Issue number | 2 |
DOIs | |
State | Published - Jul 30 1991 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry