Open AccessLight-scattering Characteristics of Metal Nanoparticles on a Single Bacterial Cell
Author(s) -
Takamasa Kinoshita,
Keita Kiso,
Dung Quynh Le,
Hiroshi Shiigi,
Tsutomu Nagaoka
Publication year - 2016
Publication title -
analytical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 73
eISSN - 1348-2246
pISSN - 0910-6340
DOI - 10.2116/analsci.32.301
Subject(s) - nanoparticle , dispersity , chemistry , light scattering , surface plasmon resonance , monochromatic color , dynamic light scattering , metal , scattering , silver nanoparticle , copper , nanotechnology , optics , materials science , organic chemistry , physics
Metal nanoparticles express unique light-scattering characteristics based on the localized surface plasmon resonance, which depends on the metal species, particle size, and aggregation state of the nanoparticles. Therefore, we focused on the light-scattering characteristics of metal nanoparticles, such as silver, gold, and copper oxide, adsorbed on a bacterium. Monodisperse silver nanoparticles expressed the strongest scattered light among them, and showed various colors of scattered light. Although a monodisperse gold nanoparticle produced monochromatic light (green color), the color of the scattered light strongly depended on the aggregation state of the nanoparticles on a bacterium. On the other hand, copper oxide nanoparticles expressed monochromatic light (blue color), regardless of their aggregation states on a bacterium. We examined details concerning the light-scattering characteristics of metal nanoparticles, and discussed the possibility of their applications to bacterial cell imaging.