Photochemical nano-scale patterning with Rhodamine 6G dye from aqueous phase

Aschalew Kassu; Fernando A. Calzzani Jr.; Jean M. Taguenang; Redahegn K. Sileshi; Anup Sharma

doi:10.1117/12.794967

28 August 2008 Photochemical nano-scale patterning with Rhodamine 6G dye from aqueous phase

Aschalew Kassu, Fernando A. Calzzani Jr., Jean M. Taguenang, Redahegn K. Sileshi, Anup Sharma

Proceedings Volume 7033, Plasmonics: Nanoimaging, Nanofabrication, and Their Applications IV; 703306 (2008) https://doi.org/10.1117/12.794967
Event: NanoScience + Engineering, 2008, San Diego, California, United States

Abstract

Surface relief gratings produced on planar substrates have been widely investigated for their application as a holographic recording medium. Much of this work has concentrated on gratings made in polymer thin films with an azo-benzene group. We describe a novel phenomenon involving surface relief gratings which are formed by deposition of Rhodamine 6G dye on polybutadiene thin film. This deposition as a grating pattern is photo-induced in a dye-solution by holographic interference of low power 488 nm light from an argon-ion laser. Dynamics of this aqueousphase grating deposition is investigated for various concentrations of the dye. A plausible mechanism of grating formation involves photochemical reaction of polybutadiene substrate with the laser-excited dye. Surface relief structure of the grating is characterized with an atomic force microscope.

Citation Download Citation

Aschalew Kassu, Fernando A. Calzzani Jr., Jean M. Taguenang, Redahegn K. Sileshi, and Anup Sharma "Photochemical nano-scale patterning with Rhodamine 6G dye from aqueous phase", Proc. SPIE 7033, Plasmonics: Nanoimaging, Nanofabrication, and Their Applications IV, 703306 (28 August 2008); https://doi.org/10.1117/12.794967

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