Abstract
We have used time-resolved imaging to examine the effect of incident radiation wavelength in the range 2.75-3.75 μm on the shattering of water microdroplets by single and dual lasers. Dye sensitization of microdroplets was induced by using the water-soluble dye sulforhodamine G; this enabled us to observe both the forward and backward components of fragmented droplets and splashes. Compared with employing a single IR laser, simultaneous illumination by two IR lasers can effectively compress the spatial distribution of small fragments around the absorption maximum for the OH-stretching vibration of liquid water (y=2.75-3.25 μm). Scattering and compression of the fragmented microdroplets after single and dual IR laser irradiation can be explained by conservation of momentum.
Original language | English |
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Pages (from-to) | 459-470 |
Number of pages | 12 |
Journal | Zeitschrift fur Physikalische Chemie |
Volume | 228 |
Issue number | 4-5 |
DOIs | |
Publication status | Published - 2014 May |
Keywords
- Dye sensitization
- IR laser
- Shattering
- Time-resolved imaging
- Water microdroplet
ASJC Scopus subject areas
- Physical and Theoretical Chemistry