Table 2 Tuning of the period of graphene plasmonic interference pattern.
From: Super-Resolution Imaging at Mid-Infrared Waveband in Graphene-nanocavity formed on meta-surface
(a) | ||||||
Thickness of water film (nm) | 5 | 8 | 11 | 14 | 17 | 20 |
Period of surface plasmon interference pattern by analytical calculation (nm) | 38.6 | 47.8 | 55.0 | 61.0 | 66.2 | 70.8 |
Period of surface plasmon interference pattern by numerical simulation (nm) | 38.0 | 48.0 | 54.0 | 60.0 | 65.5 | 71.0 |
Propagation length of the graphene plasmons by analytical calculation (nm) | 231.2 | 287.9 | 332.6 | 369.6 | 401.3 | 428.7 |
(b) | ||||||
Thickness of silver grating (nm) | 40 | 50 | 60 | 70 | 80 | |
Period of surface plasmon interference pattern by analytical calculation (nm) | 52.8 | 52.8 | 52.8 | 52.8 | 52.8 | |
Period of surface plasmon interference pattern by numerical simulation (nm) | 52.0 | 52.0 | 52.0 | 52.0 | 52.5 | |
Propagation length of the graphene plasmons by analytical calculation (nm) | 318.7 | 318.7 | 318.7 | 318.7 | 318.7 | |
(c) | ||||||
Chemical potential of upper graphene (eV) | 0.3 | 0.4 | 0.5 | 0.6 | ||
Period of surface plasmon interference pattern by analytical calculation (nm) | 39.5 | 45.0 | 48.9 | 51.8 | ||
Period of surface plasmon interference pattern by numerical simulation (nm) | 37.0 | 43.3 | 49.3 | 51.0 | ||
Propagation length of the graphene plasmons by analytical calculation (nm) | 237.6 | 271.7 | 295.5 | 313.0 | ||
(d) | ||||||
Chemical potential of lower graphene (eV) | 0.3 | 0.4 | 0.5 | 0.6 | ||
Period of surface plasmon interference pattern by analytical calculation (nm) | 39.5 | 45.0 | 48.9 | 51.8 | ||
Period of surface plasmon interference pattern by numerical simulation (nm) | 37.5 | 43.8 | 47.5 | 50.8 | ||
Propagation length of the graphene plasmons by analytical calculation (nm) | 237.6 | 271.7 | 295.5 | 312.9 | ||
