Birefringence Reducing Precision Replication Process Assisted by Infrared Radiation

[+] Author and Article Information
Kimitoshi Sato, Yasuo Kurosaki

Department of Mechanical Engineering and Intelligent Systems, University of Electro-Communications, Chofu, Tokyo 182-8585, Japan

J. Electron. Packag 124(2), 111-114 (May 02, 2002) (4 pages) doi:10.1115/1.1451846 History: Received April 20, 2001; Online May 02, 2002
Copyright © 2002 by ASME
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Liou,  M. J., and Suh,  N. P., 1989, “Reducing Residual Stresses in Molded Parts” Polym. Eng. Sci., 29–7, pp. 441–447.
Jansen,  K. M. B., and Flaman,  A. A. M., 1994, “The Influence of Surface Heating on the Birefringence Distribution in Injection Molded Parts,” Polym. Eng. Sci., 34–11, pp. 898–904.
Kurosaki, Y., Satoh, I., and Saito, T., 1999, “Precision Polymer Injection Molding Process Assisted by Infrared Radiation to Upgrade both Optical Quality and Transcribability,” Proceeding of the ASPE Spring Topical Meeting on Precision fabrication and Replication, Apr., pp. 46–49.
Kurosaki, Y., Satoh, I., and Saito, T., 2000, “Heat Transfer Aspect to Upgrade the Quality of Plastics,” Proceeding of the Symposium of Energy Engineering in the 21 Century, Jan. pp. 84–95.
Kurosaki, Y., and Sato, K., 2000, “A Novel Polymer Processing Assisted by Infrared Radiation to Attain a High Precision Transcription,” Proceeding of the 15th ASPE Annual Meeting, Oct. pp. 156–159.


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Birefringence distribution in the transverse direction
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Birefringence patterns in processed discs
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Influence of duration of irradiation on replication using the mother stamper
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AFM images of stamper and work piece
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Optical system for the photo-elastic observation
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Detail of precise mold system used in the replication process
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Experimental setup for the precise replication process
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Schematic of the geometry of work piece
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Numerically calculated temperature distributuin in the mold system
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A model of the numerical simulation
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Schematic of the two-stage transcription process assited by infrared radiation




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