Abstract
A new experimental apparatus, based on the laser-induced capillary wave method involving the use of a pulsed carbon dioxide laser (wavelength 10.6 μm, pulse width 50 ns, power 65 mJ) as a heating source has been developed. Since the present technique is applicable to a wide range of viscosity, this method is applicable to the process in which the viscosity drastically changes within a short period of time. In this method, interfering laser beams heat a liquid surface and generate a capillary wave (the wavelength can be adjusted from 20 to 200 μm) caused by a spatially sinusoidal temperature distribution. The temporal behavior of the capillary wave is detected by a diffracted probe beam (He-Ne laser, 15 mW) at the heated area. The dynamics of the capillary wave provide information regarding thermophysical properties such as viscosity and surface tension. In the present study, several liquid samples spanning the viscosity range from 0.33 to 7080 MPa·s (e.g., acetone, toluene, 1-hexanol, ethylene glycol, JS1000, and JS14000) were investigated at room temperature. The detected signals for several liquid samples exhibiting a wide range of viscosity agree well with theoretical calculations, taking into account the influence of the distribution of surface tension.
| Original language | English |
|---|---|
| Pages (from-to) | 1461-1474 |
| Number of pages | 14 |
| Journal | International Journal of Thermophysics |
| Volume | 25 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2004 Sep |
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Keywords
- Laser-induced capillary wave
- Measurement technique
- Surface tension
- Viscosity
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Mechanics of Materials
- Computational Mechanics
- Fluid Flow and Transfer Processes
- Physics and Astronomy (miscellaneous)
Cite this
Development of laser-induced capillary wave method for viscosity measurement using pulsed carbon dioxide laser. / Oba, T.; Kido, Y.; Nagasaka, Yuji.
In: International Journal of Thermophysics, Vol. 25, No. 5, 09.2004, p. 1461-1474.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Development of laser-induced capillary wave method for viscosity measurement using pulsed carbon dioxide laser
AU - Oba, T.
AU - Kido, Y.
AU - Nagasaka, Yuji
PY - 2004/9
Y1 - 2004/9
N2 - A new experimental apparatus, based on the laser-induced capillary wave method involving the use of a pulsed carbon dioxide laser (wavelength 10.6 μm, pulse width 50 ns, power 65 mJ) as a heating source has been developed. Since the present technique is applicable to a wide range of viscosity, this method is applicable to the process in which the viscosity drastically changes within a short period of time. In this method, interfering laser beams heat a liquid surface and generate a capillary wave (the wavelength can be adjusted from 20 to 200 μm) caused by a spatially sinusoidal temperature distribution. The temporal behavior of the capillary wave is detected by a diffracted probe beam (He-Ne laser, 15 mW) at the heated area. The dynamics of the capillary wave provide information regarding thermophysical properties such as viscosity and surface tension. In the present study, several liquid samples spanning the viscosity range from 0.33 to 7080 MPa·s (e.g., acetone, toluene, 1-hexanol, ethylene glycol, JS1000, and JS14000) were investigated at room temperature. The detected signals for several liquid samples exhibiting a wide range of viscosity agree well with theoretical calculations, taking into account the influence of the distribution of surface tension.
AB - A new experimental apparatus, based on the laser-induced capillary wave method involving the use of a pulsed carbon dioxide laser (wavelength 10.6 μm, pulse width 50 ns, power 65 mJ) as a heating source has been developed. Since the present technique is applicable to a wide range of viscosity, this method is applicable to the process in which the viscosity drastically changes within a short period of time. In this method, interfering laser beams heat a liquid surface and generate a capillary wave (the wavelength can be adjusted from 20 to 200 μm) caused by a spatially sinusoidal temperature distribution. The temporal behavior of the capillary wave is detected by a diffracted probe beam (He-Ne laser, 15 mW) at the heated area. The dynamics of the capillary wave provide information regarding thermophysical properties such as viscosity and surface tension. In the present study, several liquid samples spanning the viscosity range from 0.33 to 7080 MPa·s (e.g., acetone, toluene, 1-hexanol, ethylene glycol, JS1000, and JS14000) were investigated at room temperature. The detected signals for several liquid samples exhibiting a wide range of viscosity agree well with theoretical calculations, taking into account the influence of the distribution of surface tension.
KW - Laser-induced capillary wave
KW - Measurement technique
KW - Surface tension
KW - Viscosity
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UR - http://www.scopus.com/inward/citedby.url?scp=7544220965&partnerID=8YFLogxK
U2 - 10.1007/s10765-004-5751-z
DO - 10.1007/s10765-004-5751-z
M3 - Article
AN - SCOPUS:7544220965
VL - 25
SP - 1461
EP - 1474
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
SN - 0195-928X
IS - 5
ER -