Enhancing bright-field image of microorganisms by local plasmon of Ag nanoparticle array
Journal
Optics Letters
Journal Volume
39
Journal Issue
5
Pages
1173-1176
Date Issued
2014
Author(s)
Hsiao H.-H.
Yeh P.-C.
Wang H.-H.
Cheng T.-Y.
Chang H.-C.
Wang Y.-L.
Abstract
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 nano-particle 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.
Other Subjects
Microorganisms; Nanoparticles; Plasmons; Ag nanoparticle; Biological cells; Bright-field images; Electrodynamic simulations; Imaging contrast; Optical transparency; Silver nanoparticle array; Silver-nanoparticles; Silver; metal nanoparticle; silver; article; chemistry; cytology; equipment; microscopy; Saccharomyces cerevisiae; surface plasmon resonance; Metal Nanoparticles; Microscopy; Saccharomyces cerevisiae; Silver; Surface Plasmon Resonance
Type
journal article