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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/16247

Title: Optical Second Harmonic Generation Analysis of Unrubbed Polyimide Surfaces as a Function of the Content of Steroidal Structure Side Chains
Authors: Nguyen, Trinh Thi
Yu, Sheng
Asakura, Shinya
Khuat, Thi Thu Hien
Mizutani, Goro
Murakami, Yoshitaka
Okada, Takashi
Keywords: Second harmonic generation
Polymer surface
Steroidal structure
Issue Date: 2020-05-02
Publisher: The Japan Society of Vacuum and Surface Science
Magazine name: e-Journal of Surface Science and Nanotechnology
Volume: 18
Start page: 175
End page: 179
DOI: 10.1380/ejssnt.2020.175
Abstract: Contribution of main chains and side chains of unrubbed polyimide films with steroidal structure side chains to second harmonic generation (SHG) response was studied by varying their molar fraction of side-chain diamine. The SHG intensity in P_<in>/P_<out> polarization (P-polarization input and P-polarization output) configuration does not depend strongly on the molar fraction. This indicates that both the main chains and side chains at the surface contribute similarly to the SHG intensity. The SHG intensity in S_<in>/P_<out> polarization configuration normalized by that of P_<in>/P_<out> polarization configuration was the smallest for the molar fraction of side-chain diamine of 0%. This fact indicates that the microscopic nonlinear dipoles are standing nearly upright at the surface of the film consisting only of the main chains, while their orientational spread is wider when the side chains are involved.
Rights: Nguyen Thi Trinh, Yu Sheng, Shinya Asakura, Khuat Thi Thu Hien, Goro Mizutani, Yoshitaka Murakami, Takashi Okada, e-Journal of Surface Science and Nanotechnology, 18, 2020, pp.175-179. DOI:10.1380/ejssnt.2020.175. All articles published on e-J. Surf. Sci. Nanotechnol. are licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0). You are free to copy and redistribute articles in any medium or format and also free to remix, transform, and build upon articles for any purpose (including a commercial use) as long as you give appropriate credit to the original source and provide a link to the Creative Commons (CC) license. If you modify the material, you must indicate changes in a proper way.
URI: http://hdl.handle.net/10119/16247
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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