Organic-based plasmonic emitters for sensing applications

Nan Fu Chiu, Teng Yi Huang, Chun Chuan Kuo, Chii Wann Lin, Jiun Haw Lee

研究成果: 雜誌貢獻文章

6 引文 斯高帕斯(Scopus)

摘要

Plasmonic emissions generated by excitation of an organic layer on a metal grating structure are demonstrated. The emissions correspond to the resonant condition of surface plasmon (SP) modes on the Alq3/Au interface, and the grating structure is coupled to the Au/air interface to provide light emissions. Experimental variations in pitch to control plasmonic bandgap obtained highly directional plasmonic emissions with enhanced intensity. This method is readily applicable for detecting refractive index changes by using SP-coupled fluorophores to obtain emissions of varying wavelengths and viewing angles. The calculations showed that the wavelength of the plasmonic emitter changed from 480 to 680 nm at certain viewing angles, while the concentration of contacting glucose increased from 10% to 40%. Accordingly, a device with a pitch size of 500 nm had a sensitivity of δθe/δn = 37.76° and δn = 1.681 × 10-4 RIU (refractive index unit). Therefore, the proposed approach has potential applications in low-cost, disposable, point-of-care biosensors.

原文英語
頁(從 - 到)1383-1388
頁數6
期刊Applied Optics
52
發行號7
DOIs
出版狀態已發佈 - 2013 三月 1

    指紋

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

引用此

Chiu, N. F., Huang, T. Y., Kuo, C. C., Lin, C. W., & Lee, J. H. (2013). Organic-based plasmonic emitters for sensing applications. Applied Optics, 52(7), 1383-1388. https://doi.org/10.1364/AO.52.001383