Fig. 2From: Gold nanoparticle-labeled biosensor for rapid and sensitive detection of bacterial pathogensPolyaniline (PANI)-coated magnetic nanoparticles (MNPs). Transmission electron microscopy (TEM) images of: (a) Fe2O3 core; (b) PANI-coated MNPs. The insets show the electron diffraction patterns of the nanoparticles [18]. Used with permission from Biosensors & BioelectronicsBack to article page