G134 レーザー誘起表面波法を用いた広範な粘性率非接触センシングシステムの開発(一般セッション物性)

概要

論文の詳細を見る
We have developed a new measurement technique for liquid viscosity using the use of the pulse carbon dioxide laser (wavelength 10.6μm, pulse width 50ns, power 65mJ) as a heating source. In the present method, interfering laser beams heat a liquid surface and generate a laser-induced capillary wave (LiCW) caused by a spatially sinusoidal temperature distribution. The temporal behavior of LiCW is detected by monitoring the intensity of diffracted probing beam (He-Ne laser, 15mW) at the heating spot. The dynamics of LiCW provides information regarding thermophysical properties such as viscosity and surface tension. In the present study, in order to examine the validity of this method, we have measured the viscosity for several pure samples ranging from 0.1mPa's to 10000mPa's.
2005-11-02