Abstract
We study periodic lattices of silicon nanorods and introduce the concept of a phase diagram that characterizes a transition between the regimes of photonic crystals and the dielectric metamaterials when the lattice spacing and operational wavelength vary. We find the conditions when a hexagonal periodic lattice of silicon nanorods can operate as a metamaterial described by averaged parameters. In general, we reveal that the metamaterial regime can be achieved for dielectric permittivity exceeding the value ϵ = 14, being commonly available for semiconductors in both visible and near-infrared frequency ranges. Thus, advanced semiconductor technologies can offer a versatile platform for novel designs of all-dielectric Mie-resonant metadevices.
| Original language | English |
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| Pages (from-to) | 4751-4757 |
| Number of pages | 7 |
| Journal | ACS Photonics |
| Volume | 5 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 19 Dec 2018 |