Nanostars exhibit several unique properties due to their shape and composition. One of the most notable is their plasmonic properties. The protruding arms of the nanostars create "hot spots" where the electromagnetic field is greatly enhanced, leading to strong surface-enhanced Raman scattering (SERS). This makes nanostars especially useful in biosensing and analytical applications. Additionally, their optical properties can be tuned by adjusting the size and shape of the arms, allowing for applications in photothermal therapy and imaging.
