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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i4-6.360
pages 844-855

Experimental Investigation of the Explosive Evaporation of Liquids on a Solid Surface Heated by Pulsed Ultraviolet Laser Irradiation

H. K. Park
Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA
Costas Grigoropoulos
Laser Thermal Laboratory, Department of Mechanical Engineering, University of California at Berkeley, 6129 Etcheverry Hall, Berkeley California 94720-1740, USA
O. Yavas
IBM Almaden Research Center, San Jose, USA
W. P. Leung
IBM Almaden Research Center, San Jose, USA
C. Poon
IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA
A.C. Tam
IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, USA

RESUMO

The dynamics of the explosive evaporation of various liquids at the nanosecond time-scale are studied experimentally. Pure water, ethanol, methanol, isopropanol (IPA), and different mixtures of IPA and water are in contact with the surface of a thin chromium film that is heated by ultraviolet (UV) KrF excimer laser pulses of nanosecond duration. The laser fluence threshold for vaporization and the transient development of the bubble nucleation process are monitored by reflectance and scattering measurements. The onset of phase change is marked by a strong acoustic signal that is detected by a piezoelectric transducer.


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