ORABY, EZZAT and AMER, M. and ABOU-ELNASR, T.Z.A. and El Okr, M. M. (2013) IMPROVING THE ACCURACY OF INTERFERENCE MICROSCOPE MEASUREMENTS BY APPLYING GENETIC ALGORITHM. Al-Azhar Bulletin of Science- Basic Science Sector, 24 (2). pp. 41-52. ISSN 1110-2535
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Abstract
The interference microscope measurements with white light scanning interferometry (WLSI) and phase stepping interferometry (PSI) have been improved by optimizing the experimental conditions such as vertical distance between the objective and the surface under test (z), the tilt angles of the incident light beam with the surface and incident light intensity (I). Finally an accurate surface parameters measurement is obtainable. A genetic algorithm code has been developed to determine the best values of experimental conditions instead of manual adjustment by the operator. The combined uncertainty has been successfully reduced from 3.01 nm to 0.84 nm for the WLSI roughness measurement. While it has been reduced from 0.18 nm to 0.08 nm for the PSI step height measurement.
Item Type: | Article |
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Subjects: | South Asian Archive > Medical Science |
Depositing User: | Unnamed user with email support@southasianarchive.com |
Date Deposited: | 18 Jun 2024 07:32 |
Last Modified: | 18 Jun 2024 07:32 |
URI: | http://article.journalrepositoryarticle.com/id/eprint/1416 |