12 August 2010 Beam scanning and color display with an elastomeric grating actuated by a shape memory alloy
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Abstract
A tunable diffraction grating is fabricated by embedding a nitinol wire within an elastomeric grating replica. Curvature of the grating is varied through heating the wire with an electric current. Actuation redirects the grating normal, resulting in a scanning motion of the diffracted beam. With 2.0 A of applied current, the 1st-order beam sweeps from diffraction angle φ = 45.4° to φ = 29.6° (Δφ = 15.8°) in approximately 40 seconds. Use of the deformable grating as a selective color display element is discussed.
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Raphael A. Guerrero, Raphael A. Guerrero, Michelle Wynne C. Sze, Michelle Wynne C. Sze, Jose Ramon A. Batiller, Jose Ramon A. Batiller, "Beam scanning and color display with an elastomeric grating actuated by a shape memory alloy", Proc. SPIE 7788, Polymer Optics Design, Fabrication, and Materials, 77880B (12 August 2010); doi: 10.1117/12.863722; https://doi.org/10.1117/12.863722
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