Evaporation-driven solutocapillary flow of thin liquid films over curved substrates

Instability and symmetry breaking in binary evaporating thin films over a solid spherical dome

“…This model expands upon our previous publication by including azimuthal flow (see Rodríguez-Hakim et al. 2019). In this manuscript, the asterisk superscript represents dimensional quantities.…”

“…Our present work provides an in-depth analysis of the instability observed by Rodríguez-Hakim et al. (2019) (see figure 5( f ) in the supporting information). In our previous work, we used a combination of interferometric techniques and lubrication theory to study the evolution of an axisymmetric, evaporating, binary silicone oil film over a glass dome.…”

“…These experiments use the same equipment set-up and procedures as presented in our previous work (Rodríguez-Hakim et al. 2019). We therefore only provide a brief description in the present manuscript.…”

“…The relevant material properties can be found in table 1 in our previous work (Rodríguez-Hakim et al. 2019). In order to examine the effects of initial solute concentration on the evolution of the film, experiments were conducted at four different initial concentrations of the 5 cSt silicone oil: , 0.005, 0.01 and .…”

Hyperspectral imaging for dynamic thin film interferometry

“…This technique has since then become the conventional method for characterizing thin liquid films in research settings, primarily due to its simplicity and non-invasive nature. Some of the important areas that make use of this technique includes characterizing foam 15,16 and emulsion 17,18 stability, drop impacts 19 , tear films [20][21][22] and liquid film coatings 23 . Despite the popularity of the technique in research settings, dynamic thin liquid film interferometry has not proliferated industrial or commercial settings.…”