Morphology-Dependent Biosensing of Metallic Nanoparticles

Nanoparticles are particles with dimensions that lie within the nanoscale range, typically measured in the order of 10–9 meters. It finds its applications in diversified fields such as drug delivery, biosensing, catalysis, environment and energy. In this chapter, we will focus on the biosensing application and how effective nanoparticles are in this field. Amongst the most important factors that govern such activities are the morphologies of the nanoparticles that in turn decide their applications. We are going to focus some light on such morphology-dependent biosensing activities of metals such as gold, silver, copper, i.e. the most abundant and effective nanoparticles in different forms such as rod, wire, cubes, spheres, cages, chips, films and even at times as hybridized nanoparticles to give best results. Also, the advantages of biosensors over other competitors make the discussion noteworthy.