Title: One-step fabrication of surface-relief diffusers by stress-induced undulations on elastomer
Authors: Wang, Jui-Hao
Chen, Chia-Fu
Ho, Jeng-Rong
Shih, Teng-Kai
Chen, Chien-Chung
Whang, Wha-Tzong
Yang, Jung-Yen
材料科學與工程學系
Department of Materials Science and Engineering
Keywords: Microscaled undulations;PDMS;Acid treatment
Issue Date: 1-Sep-2009
Abstract: In this study, we demonstrated that microscale surface undulations induced by acid treatment could serve as the surface relief on diffusers coated with a layer of PDMS polymer. Since the orientation of undulations was found to be always disordered, these undulations would scatter light uniformly. The periodicity of the undulations could be adjusted by the control of duration of the dipping of the elastomer into H(2)SO(4)/HNO(3) solutions and by the volume ratio of H(2)SO(4)/HNO(3) the solution, resulting in the modulation of diffusing ability of diffusers. The optical properties, transmittance, and light diffusivity, were characterised. This proposed approach offers potential for mass production of surface-relief diffusers. In addition, the proposed method allows the creation of undulations on arbitrary substrates. (C) 2008 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.optlastec.2008.12.005
http://hdl.handle.net/11536/6720
ISSN: 0030-3992
DOI: 10.1016/j.optlastec.2008.12.005
Journal: OPTICS AND LASER TECHNOLOGY
Volume: 41
Issue: 6
Begin Page: 804
End Page: 808
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