Optical detection of air bubbles trapped in a micro-capillary pore using a laser interferometric backscatter technique /
The laser interferometric backscatter technique has been used to detect the presence of air bubbles trapped inside a micro-capillary pore. A simple experimental setup consists of a low power He-Ne laser, micro-capillary pores of different diameters containing the sample fluid and air, and a silicon...
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
2002.
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| Online Access: | Link to OAKTrust copy |
| Summary: | The laser interferometric backscatter technique has been used to detect the presence of air bubbles trapped inside a micro-capillary pore. A simple experimental setup consists of a low power He-Ne laser, micro-capillary pores of different diameters containing the sample fluid and air, and a silicon photo detector mounted on a horizontal positioning slide. The fringes in the backscattered region were found to be sensitive to parameters including the refractive index of the fluid and the geometric configuration of the capillary pore. A theoretical modeling used in this analysis discusses the effects of the various parameters on the fringe pattern. These results indicated significant detectable dependence of the fringe pattern on the refractive index of the fluid and the geometric configuration of the capillary under consideration. Detailed comparison of the experimental results for the two different capillaries with the theoretical predictions showed fairly good agreement with each other. |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | vii, 45 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references (leaf 38). |