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Development of photoelectric optical fiber probe and expression of micro-bubble function

光电光纤探针的研制及微泡函数的表达

基本信息

批准号：
17206017
负责人：
SAITO Takayuki
金额：
$ 30.28万
依托单位：
Shizuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

Micro bubbles attract a great deal of attention due to their large potential for expansion in both science and technology. Conventional measurement techniques such as PDA (Phase Doppler Anemometer), ILIDS (Interferometric laser imaging for droplet sizing) and so on are insufficient to reveal their interting and useful properties. In the case of high number density of the micro bubbles, the conventional measurement techniques are not available. For the purpose of overcoming the difficult problem and pioneering an innovative field in multiphase flows, the head invastigator proposes a new measurement system based on his research results of micro optical fiber probe. We newly developed the multifunctional photoelectric fiber probe that simultaneously measures the diameter, velocity and number density of bubble/droplet and the concentration of substances. The outline of the results as follows;1) By simultaneously using optical signals and electric signals, we established the new measurement system that measures the diameter, velocity, number density and surface potential of the micro bubbles/droplets, as well as measurement of the surface tension.2) We established micro fabrication of quartz by femtosecond pulse lasers.3) We elucidated the change of dynamical properties of micro bubbles/droplets and the changes of interaction between them and the surrounding phase owing to expression of function. We obtained the data for application in material production.4) We obtained basic data for micro fabrication of tiny optical fibers and established the techniques for the micro fabrication.The products during the three-year study period are listed below:1) 30 papers (4 papers in Japanese journals and 24 papers in international journals),2) 24 papers in international conferences3) 17 invited keynote lectures (international conferences)4) 24 invited keynote lectures (domestic conferences)5) 3 patent applications (2 patents applied to Japan and 1 patent applied to oversea countries)

微气泡由于其在科学和技术领域的巨大扩展潜力而引起了广泛的关注。传统的测量技术，如 PDA（相位多普勒风速计）、ILIDS（用于液滴大小的干涉激光成像）等不足以揭示它们的有用特性。在微气泡数密度较高的情况下，传统的测量技术无法使用。为了攻克难题，开拓多相流创新领域，首席研究员基于微型光纤探头的研究成果，提出了一种新的测量系统。我们新开发了多功能光电光纤探头，可同时测量气泡/液滴的直径、速度和数密度以及物质的浓度。结果概要如下：1）通过同时使用光信号和电信号，我们建立了新的测量系统，可测量微气泡/液滴的直径、速度、数密度和表面电势，以及表面张力的测量。2）我们建立了飞秒脉冲激光器对石英的微加工。3）我们阐明了微气泡/液滴动力学性质的变化。微气泡/液滴以及它们与周围相之间由于功能表达而发生的相互作用的变化。获得了在材料生产中应用的数据。4）获得了微小光纤微加工的基础数据，建立了微加工技术。三年研究期间的成果如下：1）30篇论文（日本期刊4篇，国际期刊24篇），2）国际会议论文24篇3）特邀主题报告（国际会议）17篇4）特邀主题报告24篇讲座（国内会议）5）专利申请3项（日本申请专利2项，海外国家申请专利1项）