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Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Reflection phase gratings based on write-once optical discs are proposed. Their morphology and backward diffraction characteristics are investigated. Home-made phase gratings with well-defined spacing about 1 524, 751, 335 nm are readily produced by pulling off ordinary optical discs. The backward diffraction characteristics of three phase gratings are compared. The research results show that diffraction phenomena of CD-R, DVD-R and BD-R gratings are observed in visible, visible-NIR and ultraviolet regions, respectively; successive spectra overlap are observed in diffraction spectra of the CD-R grating and angular dispersion of diffraction spectra increases as the diffraction order increases; diffraction angle of the three gratings is linearly proportional to the diffraction peak, angular dispersion increases as the grating constants decreases and the maximum angular dispersion is 0.333(°)/nm. In addition, when wavelength of incident light is more than the grating period, there is only zero-order diffraction wave in diffraction spectra of the DVD-R and BD-R subwavelength gratings. [ABSTRACT FROM AUTHOR]

Copyright of China Mechanical Engineering is the property of Editorial Board of China Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)