Enhanced Near-Field Localization in Au@CdSe Nanoshells: Toward Next-Generation Sensing Devices

The electric field enhancement of hybrid metal-semiconductor nanostructures is very important because it combines surface plasmons of metals and excitons of semiconductors. This paper gives the electric field enhancement and resonance wavelength of Au@CdSe and CdSe@Au nanoshells. This unified approach would furnish a resource for recognizing and understanding the similarities as well as differences between two processes of utmost importance. This comparative analysis is useful to study surface-enhanced Raman spectroscopy (SERS), refractive index sensing, and optical sensing, which improves device performance.