Colorimetric detection of oral bacteria using functionalized gold nanoparticles as a plasmonic biosensor array
Christina Wenck, Dorthe Leopoldt, Mosaieb Habib, Jan Hegermann, Meike Stiesch, Katharina Doll‐Nikutta, Alexander Heisterkamp, Maria Leilani Torres‐Mapa
Abstract
and UV-vis absorbance values. Both methods successfully detected the individual bacterial species based on their unique responses to the biosensor array. We present an in-depth study relating the bacteria zeta potential and AuNP aggregation to plasmonic response. The sensitivity depends on multiple parameters, such as bacterial species and concentration as well as gold nanoparticle shape, concentration and functionalization.
Topics & Concepts
BiosensorColloidal goldNanoparticleNanotechnologyPlasmonBacteriaMaterials scienceChemistrySurface plasmon resonanceOptoelectronicsBiologyGeneticsBiosensors and Analytical DetectionOral microbiology and periodontitis researchAdvanced biosensing and bioanalysis techniques