Several fascinating phenomena are observed at the nanoscale:
Surface Plasmon Resonance in metal nanoparticles, where conduction electrons on the surface oscillate in response to light, leading to unique optical properties used in biosensors and imaging. Quantum Dots, semiconductor nanoparticles that exhibit quantum confinement, resulting in size-dependent emission spectra used in displays and medical imaging. Superparamagnetism in nanoparticles, where magnetic materials do not retain magnetization in the absence of an external magnetic field, useful in data storage and medical diagnostics. Enhanced Catalysis in nanoparticle catalysts due to increased surface area and active sites, leading to higher efficiency in chemical reactions.
