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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47402

Title: Enhancing Surface Plasmon Detection Using Template-Stripped Gold Nanoslit Arrays on Plastic Films
Authors: Pei-Kuen Wei
Kuang-Li Lee
Pei-Wen Chen
Shu-Han Wu
Jhih-Bin Huang
Sen-Yeu Yang
Contributors: 國立臺灣海洋大學:光電科學研究所
Keywords: template stripping
Fano resonance
nanoslit array
optical sensors
subwavelength structures
surface plasmon resonance
Date: 2012-06
Issue Date: 2018-07-18T03:42:21Z
Publisher: ACS Nano
Abstract: Abstract: Nanostructure-based sensors are capable of sensitive and label-free detection for biomedical applications. However, high-throughput and low-cost fabrication techniques are the main issues which should be addressed. In this study, chip-based nanostructures for intensity-sensitive detection were fabricated and tested using a thermal-annealing-assisted template-stripping method. Large-area uniform nanoslit arrays with a 500 nm period and various slit widths, from 30 to 165 nm, were made on plastic films. A transverse magnetic-polarized wave in these gold nanostructures generated sharp and asymmetric Fano resonances in transmission spectra. The full width at half-maximum bandwidth decreased with the decrease of the slit width. The narrowest bandwidth was smaller than 10 nm. Compared to nanoslit arrays on glass substrates using electron-beam lithography, the proposed chip has a higher intensity sensitivity up to 10367%/RIU (refractive index unit) and reaches a figure of merit up to 55. The higher intensity sensitivity for the template-stripped nanostructure is attributed to a smoother gold surface and larger grain sizes on the plastic film, which reduces the surface plasmon propagation loss.
Relation: 6(4) pp.2931–2939
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47402
Appears in Collections:[光電科學研究所] 期刊論文

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