Nanomaterial-Based Sharp Focusing and Application

Dear Colleagues,

The diffraction limit, discovered in 1873 by Ernst Abbe, follows on from the general Heisenberg uncertainty relations, and is one of the limitations on the resolution in optical information systems, and on the minimum size on lab-on-chip systems. This fundamental limit can be overcome with the help of photonic–nanostructured devices—for example, the localized electromagnetic fields formed in the shadow surface of the mesoscale dielectric particle with a refractive index contrast near 2 can be modulated by introducing a nanohole structure at its rear surface, which makes it possible to improve the spatial resolution well beyond the stable immersion diffraction limit. On the other hand, various exotic optical phenomena, such as the focusing of light beyond the diffraction limit and nonlinear photonics, arise from the collective interaction of many nanostructures specially organized to produce an ordered artificial material.

This Special Issue aims to bring together fundamental and theoretical (including simulations) and experimental studies in the form of high-quality papers in the field of nanomaterial-based sharp focusing.

Topics will include, but are not limited to:

• Sharp-edged structure
• Sharp metal tip
• Super-resolution focusing by nanostructured materials
• Nanomaterial-based optical laser lithography beyond the diffraction limit
• Design and fabrication nanoscale structures with desirable physical, scattering and morphological properties
• Sensing, trapping, nano-manipulation and other applications of the nanomaterial-based sharp focusing devices

Prof. Dr. Igor V. Minin
Prof. Dr. Oleg V. Minin
Guest Editors

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