Expression of Concern: A second order impedance-based model for the resonance wavelength of a nanoegg

Modeling nanostructures using circuit components have been useful in the enhancement of the design process of nanostructures. Given the use of nanoparticles in a wide range of applications, it becomes important to establish efficient models that can capture the properties of nanoparticles efficiently and accurately. Asymmetrical nanoparticles are more complex to model due to the symmetry breaking involved in these particles. In this paper, we present an impedance model for nanoeggs, which are one of the widely used asymmetric nanoparticles. The impedance model captures the effect of asymmetry on the resonance wavelength of the particles and can be used in the design of structures based on these particles.