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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1173–1176

Enhancing bright-field image of microorganisms by local plasmon of Ag nanoparticle array

Hui-Hsin Hsiao, Po-Chun Yeh, Huai-Hsien Wang, Tian-You Cheng, Hung-Chun Chang, Yuh-Lin Wang, and Juen-Kai Wang  »View Author Affiliations

Optics Letters, Vol. 39, Issue 5, pp. 1173-1176 (2014)

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Inspecting biological cells with bright-field light microscopy often engenders a challenge, owing to their optical transparency. We show that imaging contrast can be greatly enhanced as yeast cells are placed on a silver nanoparticle array. Its near- and far-field traits, revealed by electrodynamic simulations, illustrate that the enhancement is attributed to the sensitivity of its plasmonic characteristics to the attached cells. This study demonstrates that the silver nanoparticle array can serve as the agent for concurrently enhancing Raman scattering and imaging contrast of microorganisms for identification and examination.

© 2014 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(170.0180) Medical optics and biotechnology : Microscopy
(250.5403) Optoelectronics : Plasmonics

ToC Category:

Original Manuscript: October 30, 2013
Revised Manuscript: January 7, 2014
Manuscript Accepted: January 20, 2014
Published: February 21, 2014

Virtual Issues
Vol. 9, Iss. 5 Virtual Journal for Biomedical Optics

Hui-Hsin Hsiao, Po-Chun Yeh, Huai-Hsien Wang, Tian-You Cheng, Hung-Chun Chang, Yuh-Lin Wang, and Juen-Kai Wang, "Enhancing bright-field image of microorganisms by local plasmon of Ag nanoparticle array," Opt. Lett. 39, 1173-1176 (2014)

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