Fabrication of high edge-definition steel-tape gratings for optical encoders

High edge definition of a scale grating is the basic prerequisite for high measurement accuracy of optical encoders. This paper presents a novel fabrication method of steel tape gratings using graphene oxide nanoparticles as anti-reflective grating strips. Roll-to-roll nanoimprint lithography is ado...

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Veröffentlicht in:Review of scientific instruments 2017-10, Vol.88 (10), p.105006-105006
Hauptverfasser: Ye, Guoyong, Liu, Hongzhong, Yan, Jiawei, Ban, Yaowen, Fan, Shanjin, Shi, Yongsheng, Yin, Lei
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Sprache:eng
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Zusammenfassung:High edge definition of a scale grating is the basic prerequisite for high measurement accuracy of optical encoders. This paper presents a novel fabrication method of steel tape gratings using graphene oxide nanoparticles as anti-reflective grating strips. Roll-to-roll nanoimprint lithography is adopted to manufacture the steel tape with hydrophobic and hydrophilic pattern arrays. Self-assembly technology is employed to obtain anti-reflective grating strips by depositing the graphene oxide nanoparticles on hydrophobic regions. A thin SiO2 coating is deposited on the grating to protect the grating strips. Experimental results confirm that the proposed fabrication process enables a higher edge definition in making steel-tape gratings, and the new steel tape gratings offer better performance than conventional gratings.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4992028