The study of structural color filter based on periodic nanohole arrays for bio-detection

Seunguk Kim; Jeonghee Shin; Seungjun Yoo; Samhwan Kim; Byoungok Jeon; Cheil Moon; Jae-Eun Jang

doi:10.1117/12.2189421

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8 July 2015 The study of structural color filter based on periodic nanohole arrays for bio-detection

Seunguk Kim, Jeonghee Shin, Seungjun Yoo, Samhwan Kim, Byoungok Jeon, Cheil Moon, Jae-Eun Jang

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Proceedings Volume 9523, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015; 95230F (2015) https://doi.org/10.1117/12.2189421
Event: International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015, 2015, Jeju, Korea, Republic of

Abstract

A nanostructure which induces localized surface plasmon resonance (LSPR) can be utilized in visible light and near infrared (NIR) regions and it shows promising features as a bio-detector because LSPR state is changed easily by different bio-related materials. Owing to transparent property of many biomolecules as well as diluted states in base solutions, it is hard to distinguish each other by eye or microscope analysis. However, difference in molecular structure and composition makes difference in optical characteristics such as a refractive index or a dielectric constant. Therefore, our LSPR-based nanohole array structure which has high sensitivity to detect small changes in optical characteristics can be a great candidate for a bio detector. Here, we fabricated structural color filters (SCFs) to detect wavelength shifts for several biomolecules and optimized the nanohole array structures for high sensitivity. Periodic nanohole arrays were designed to present resonance peaks in visible light region for optical analysis and fabricated in Au or Al thin film layer. The spectral shifts were detected caused by biomolecules.

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Seunguk Kim, Jeonghee Shin, Seungjun Yoo, Samhwan Kim, Byoungok Jeon, Cheil Moon, and Jae-Eun Jang "The study of structural color filter based on periodic nanohole arrays for bio-detection", Proc. SPIE 9523, International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy 2015, 95230F (8 July 2015); https://doi.org/10.1117/12.2189421

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