Semiconductor Device-Based Sensors for Gas, Chemical, and Biomedical Applications

204 Semiconductor Device-Based Sensors for Gas, Chemical, and Biomedical Applications

© 2011 by Taylor & Francis Group, LLC

(Rubpy) dye–doped nanoparticles coated with either streptavidin or bovine serum albumin (BSA)

were incubated on the GaN surface. To the right is an image of the streptavidin-coated nanoparticles

immobilized on the biotinylated surface and on the left is a biotinylated surface incubated with

BSA-coated particles. The biotinylated surface specically reacted with the streptavidin and not

with BSA, immobilizing the uorescent particles. Nonbiotinylated surfaces showed low background

emission from the particles. After immobiliz ...