EXPERIMENTAL STUDY OF SENSING TECHNIQUE FOR HUMAN BLOOD VISCOSITY BY LASER-INDUCED CAPILLARY WAVE METHOD WITH MICRO-LITER SAMPLE VOLUME
We have developed a new blood viscometer by the laser-induced capillary wave (LiCW) method which requires only micro-liter order small sample volume and the measurement can be completed within 1 ms. By using the LiCW method it is possible to obtain liquid viscosity by observing the damping behavior of induced capillary wave using a probing laser. In our previous study, the probing laser has been irradiated continuously to observe the behavior of LiCW, so there was the problem of the temperature increase of blood over 5 K during the measurement. To solve this problem, we have irradiated the pulsed probing laser while LiCW was generated by introducing a beam shutter and a function generator. As a result, the temperature rise of blood becomes within 0.1 K. In the present paper, first, we have measured healthy human blood viscosity with 90 μl sample volume. The measured results of blood viscosity agreed well with the values obtained by other methods with the estimated shear rate by the present method. Then, we have detected the difference in blood viscosity depending on the hematocrit values between two healthy individuals. The measured results of blood viscosity showed the larger value with the higher hematocrit value.
Yuichi Muramoto Yuji Nagasaka
School of Integrated Design Engineering Keio University 3-14-1, Hiyoshi, Yokohama, 223-8522, Japan Department of System Design Engineering Keio University 3-14-1, Hiyoshi, Yokohama, 223-8522, Japan
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
478-484
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）