The study of thermocapillary deformation and rupture in horizontal water layer by confocal laser scanning microscopy

Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy


2015, Vol. 1. №4(4)

The study of thermocapillary deformation and rupture in horizontal water layer by confocal laser scanning microscopy

About the authors:

Aleksandr A. Fedorets, Dr. Sci. (Tech.), Head of the Laboratory of Micro-Hydrodynamic Technologies, University of Tyumen;

Vyacheslav V. Cheverda,
Research Engineer, Kutateladze Institute of Thermophysics, Siberian Branch of Russian Academy of Science


The effect of thermocapillary deformation and rupture of a thin horizontal water layer on the sapphire substrate with lineal resistance heater from indic oxide (in the form of deposited path with thickness of 0.5 μm, width of 0.5 mm and length of 40 mm) is experimentally investigated. For high-precision measurements of the layer thickness, the laser scanning confocal microscope is applied. It is found that the depth of the thermocapillary deformation increases directly proportional to the heat capacity. It is suggested that the rapture occurs when in a thinning liquid layer under thermocapillary deepening space density of heat flow reaches a threshold value determined by a complex of liquid and substrate properties.


1.             Bezuglyj B. A., Fedorets A. A. Lazernyj metod izmerenija tolshhiny tonkogo sloja zhidkosti na tverdoj poverhnosti s pomoshh’ju termokapilljarnogo otklika [The Laser Method for Measuring the Thickness of a Thin Layer of Liquid on a Solid Surface Using Thermocapillary Response] // Pis’ma v ZhTF [Technical Physics Letters]. 2001. Vol. 27. No 9. Pp. 20-25. (In Russian)

2.             Zajtsev D. V., Kirichenko D. P., Kabov O. A. Vlijanie smachivaemosti podlozhki na razryv lokal’no nagrevaemoj plenki zhidkosti [Influence of Substrate Wettability on the Rapture of Locally Heated Liquid Film] // Pis’ma v ZhTF [Technical Physics Letters]. 2015. Vol. 41. No 11. Pp. 79-85. (In Russian)

3.             Ljulin Yu. V., Spesivtsev S. E., Marchuk I. V., Kabov O. A. Issledovanie dinamiki razryva gorizontal’nogo sloja zhidkosti s tochechnym nagrevom so storony podlozhki [ The Study of the Rapture in the Horizontal Fluid Layer with Spot Heating from the Substrate Side] // Pis’ma v ZhTF [Technical Physics Letters]. 2015. Vol. 41. No 21. Pp. 22-29. (In Russian)

4.             Revkin S. L., Aleksandrov A. A. Teplofizicheskie svojstva vody i vodjanogo para [Thermal Properties of Water and Water Steam]. M.: Energija [Energy], 1980. 425 p.
(In Russian)

5.             Fedorets A. A., Bakin P. Yu., Kolmakov E. E. O vozmozhnosti izmerenija temperaturoprovodnosti zhidkosti po fotekonogramme [On Possible Use of the Photeconogramm for Measuring the Temperature Conductivity of Liquid] // Vestnik Tyumenskogo gosudarstvennogo universiteta [Tyumen State University Herald]. 2009.
No 6. Pp.118-124. (In Russian)

6.             Fedorets A. A., Ivanov A. A., Bakin P. Yu., Dautov T. S. Metod detektirovanija porogovoj koncentracii aromaticheskih uglevodorodov v trijetilenglikole [Method for Detection of Threshold Concentration of Aromatic Hydrocarbons in Triethylene Glycol] // Izvestija vuzov. Neft’ i gaz [Higher Educational Institutions News. Oil and Gas]. 2012. No 6. Pp. 81-84. (In Russian)

7.             Calatroni J., Da Costa G. Interferometric determination of the surface profile of a liquid heated by a laser beam // Optics Communications. 1982. Vol. 42. Pp. 5-9.

8.             Riley R. J. Neitzel G. P. Instability of thermocapillary-buoyancy convection in shallow layers // Journal of Fluid Mechanics. 1998. Part 1. Characterization of steady and oscillatory instabilities. Vol. 359. Pp. 143-164.

9.             Scriven L. E., Sternling C. V. The Marangoni Effects // Nature. 1960. Vol. 187.
Рp. 186-188.

10.         Wedershoven H. M. J. M., Berendsen C. W. J., Zeegers J. C. H., Darhuber A. A. Infrared laser induced rupture of thin liquid films on stationary substrates // Appl. Phys. Lett. 2014. Vol. 104. Pp. 054101-1–054101-4.