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Proceedings Paper

Highly-transparent multi-layered spin-coated silk fibroin film
Author(s): Kamol Wasapinyokul; Supranee Kaewpirom; Santhad Chuwongin; Siridech Boonsang
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Paper Abstract

In this study, the silk fibroin films with different numbers of layers were fabricated by the spin-coating method and their optical transmittances were observed. The process to synthesise the silk fibroin solution was explained – starting from the silk cocoon until the silk-fibroin solution, approximately 7.5% concentration wt/vol, was obtained. The solution was spin-coated onto clean glass substrates to fabricate samples. Totally 10 samples with different numbers of layers, from 1 to 5 layers, were obtained. All samples can be separated into two groups: those left dried at room temperature after spin-coating and those heated at 60°C. They were then measured for their transmittance over the visible-to-near-infrared region. All samples exhibited the high transmittance where the values were at 95% and 98%, for the samples at room temperature and those at 60°C, respectively. This was believed to be due to the heating effect that caused the silk fibroin to arrange itself after being heated, hence the higher transmittance. These high transmittances were maintained regardless of the number of layers and length of heating time. Results from this study could be used to fabricate a silk fibroin film with high optical transmittance and adjustable other properties.

Paper Details

Date Published: 24 October 2017
PDF: 6 pages
Proc. SPIE 10460, AOPC 2017: Optoelectronics and Micro/Nano-Optics, 104600S (24 October 2017); doi: 10.1117/12.2284186
Show Author Affiliations
Kamol Wasapinyokul, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Supranee Kaewpirom, Burapha Univ. (Thailand)
Santhad Chuwongin, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Siridech Boonsang, King Mongkut's Institute of Technology Ladkrabang (Thailand)

Published in SPIE Proceedings Vol. 10460:
AOPC 2017: Optoelectronics and Micro/Nano-Optics
Min Qiu; Min Gu; Xiaocong Yuan; Zhiping Zhou, Editor(s)

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