Development of a two-color laser-induced fluorescence based temperature imaging device with micro-scale resolution /
Two-color laser induced fluorescence (LIF) diagnostics techniques were used to map the temperature distribution of fluid moving through a micro-channel. The fluid (de-ionized water) was pumped through a closed-loop system consisting of an ice bath and a 3 mm x 3 mm channel machined in a heated alumi...
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
2002.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | Two-color laser induced fluorescence (LIF) diagnostics techniques were used to map the temperature distribution of fluid moving through a micro-channel. The fluid (de-ionized water) was pumped through a closed-loop system consisting of an ice bath and a 3 mm x 3 mm channel machined in a heated aluminum block. Temperature-sensitive (rhodamine 610 chloride) and temperature-insensitive (sulforhodamine 640) dye molecules were added to the fluid. Fluorescence from the dye molecules was induced with a two-dimensional sheet of laser light (532nm from a Nd:YAG laser) and the intensity of the signal from each dye was measured with a charge-coupled device (CCD) camera fitted with a 5X microscope objective. The ratio of the emitted intensity from the two dyes was used to obtain a two-dimensional temperature map of the fluid. The final system is capable of generating images with 5 micron resolution and has a sensitivity to temperature of about 0.8% per degree Kelvin. The temperature field images were acquired from a steady-state laminar flow in a square channel. |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | vi, 35 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references (leaf 24). |