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Monitoring the thinning dynamics of soap films by phase shift interferometry. The case of perfluoropolyether surfactants

  Articoli su Riviste JCR/ISI  (anno 2014)

Autori:  Gambi C.M.C., Vannoni M., Sordini A., Molesini G

Affiliazione Autori:  University of Florence, Department of Physics and CNISM, via G. Sansone 1, 50019 Sesto Fiorentino (FI), Italy; European XFEL GmbH, Albert-Einstein-Ring 19, 22767, Hamburg, Germany; CNR-Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Florence, Italy

Riassunto:  An interferometric method to monitor the thinning process of vertical soap films from a water solution of surfactant materials is reported. Raw data maps of optical path difference introduced by the film are obtained by conventional phase shift interferometry. Off-line re-processing of such raw data taking into account the layered structure of soap films leads to an accurate measurement of the geometrical thickness. As an example of data acquisition and processing, the measuring chain is demonstrated on perfluoropolyether surfactants; the section profile of vertical films is monitored from drawing to black film state, and quantitative data on the dynamics of the thinning process are presented. The interferometric method proves effective to the task, and lends itself to further investigate the physical properties of soap films.

Rivista/Giornale:  EUROPEAN PHYSICAL JOURNAL E
Volume n.:  37 (2)      Pagine da: 9  a: 9
DOI: 10.1140/epje/i2014-14009-2

*Impact Factor della Rivista: (2014) 1.757
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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