Mikhail Odit

Tunable Metamaterials for Controlling THz Radiation

Remarkable progress in terahertz (THz) sources and detectors is followed by the necessity of manipulating of terahertz radiation. Since natural materials can not perform efficient interaction with THz radiation, artificial structures called metamaterials are designed to overcome “THz gap” in this area. A variety of tunable metamaterials using different methods of control are presented and discussed in this review paper.

Near field enhancement and focusing properties of multilayer arrays of plasmonics nano-ellipsoids

Recently, we suggested the idea of an optical superlens based on a coupled pair of 2D arrays of plasmonic nano-ellipsoids. This superlens was capable of restoring sub-wavelength features of an object for s- and p-polarisation of light. In this contribution, a fast and rigorous simulation tool is employed for the imaging performance of a cluster of coupled sub-wavelength resonators. Simulations show that sub-wavelength resolution can be obtained in much thicker structures than usual for both polarisations. A distance of nearly 1.4λeff between the source and the image plane is achieved. Results of the imaging of point sources are compared with those obtained using commercial software CST Microwave Studio which validates our tool.