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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
PublisherSPIE
Volume9523
ISBN (Print)9781628416794
DOIs
StatePublished - 2015
Externally publishedYes
Event2nd International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy, NBSIS 2015 - Jeju, Korea, Republic of
Duration: Feb 25 2015Feb 27 2015

Other

Other2nd International Conference on Nano-Bio Sensing, Imaging, and Spectroscopy, NBSIS 2015
CountryKorea, Republic of
CityJeju
Period2/25/152/27/15

Keywords

  • Bio-detection
  • Localized surface plasmon resonance (LSPR)
  • Nanohole array
  • Nanoplasmonics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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