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Optical Analysis of Beads Encoded with Quantum Dots Coated with a Cationic Polymer
Author(s) -
Allen C. N.,
Lequeux N.,
Chassenieux C.,
Tessier G.,
Dubertret B.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200700116
Subject(s) - quantum dot , materials science , polymer , hyperspectral imaging , cationic polymerization , characterization (materials science) , fluorescence , layer (electronics) , quantum , nanotechnology , bead , magnetic field , optoelectronics , optics , computer science , polymer chemistry , physics , composite material , artificial intelligence , quantum mechanics
Quantum dots are incorporated onto small beads made of various materials thanks to the versatile layer‐by‐layer method. The high contrast, tri‐color gradient TEM image of a bead emphasizes quantum dots in red‐yellow spots. Below, quantum dot coated magnetic beads demonstrate bimodality with their bright fluorescence and alignment along field lines. An hyperspectral imaging inspired technique allowed faster statistical characterization of optically coded beads on a setup typical of biological experiments.