Journal
OPTICS LETTERS
Volume 39, Issue 5, Pages 1173-1176Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.39.001173
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Funding
- National Science Council [NSC101-2221-E-002-147-MY2, NSC102-2811-E-002-050, NSC99-2112-M-002-023-MY3, NSC102-2628-M-001-008]
- Academia Sinica in Taiwan
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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. (C) 2014 Optical Society of America
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