Abstract
TiO2 thin film thickness is measured after each layer of coatings by laser speckle photography. TiO2 thin film coatings are carried out on the steel substrate in a periodical way by the spin coating method. At the time t1, the first layer coating scatters the coherent laser and develops the self-interference pattern of an image called speckle, which is captured and auto-correlated. After time t2, the speckle image is recorded by CCD and cross-correlated with the previous one. There is pixel distance movement and it is computed by image processing. This speckle imaging practice gives 8 µm as the thickness of the second layer of Tio2 film coating. Hence, the shift of pixel distance gives the thickness of the multilayer sample coatings in a satisfactory manner.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
