Abstract
The rate of evaporation of water is strongly reduced by a thin film of fatty acids or oil on the surface. This can be described by a resistance to evaporation /1/. The photoacoustic signal of water should depend on this resistance, because the periodic evaporation of water determines the signal at higher temperatures. We have developed a model /2/ which considers such a resistance. It works quite well for thin compressed monolayers on polymerfoils /3/, but it is restricted to films which do not take up water and are thin compared to the mass diffusion length µf(Df/πf)½ where f is the modulation frequency Df and the diffusion coefficient in the film. To interpret’ data on films thicker than some monolayers the diffusion and solution in the film are taken into account.
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References
I. Langmuir and V. J. Schaefer, J. Franklin Institute. 235, (1943) 119
R. Osiander, P. Korpiun, W. Knoll, Photoacoustic and Photothermal Phenomena, P. Hess and J. Pelzl eds., Springer Series in Optical Sciences; Berlin, Heidelberg — 1987, p.321
R. Osiander, P. Korpiun, C. Duschl, W. Knoll, Thin Solid Films, 160 (1988) 501
P. Korpiun, Appl. Phys. Lett 44, 675 (1984)
P. Korpiun, F. Lepoutre, H. Schmitt, R. Osiander, this issue
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© 1990 Springer-Verlag Berlin Heidelberg
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Osiander, R., Helm, B., Korpiun, P. (1990). Reduction of the Photoacoustic Signal by the Evaporation Resistance of Thin Films on Liquids and Solids. In: Murphy, J.C., Spicer, J.W.M., Aamodt, L.C., Royce, B.S.H. (eds) Photoacoustic and Photothermal Phenomena II. Springer Series in Optical Sciences, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-46972-8_25
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DOI: https://doi.org/10.1007/978-3-540-46972-8_25
Publisher Name: Springer, Berlin, Heidelberg
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