Fig. 5From: Tunable Optical Performances on a Periodic Array of Plasmonic Bowtie Nanoantennas with Hollow CavitiesBehaviors of the near-field intensities (a–c) and absorption spectra (d–f) affected by the outline dimension of the hollow PBNAs with different outline film thickness t (t = 10, 15, 20, and 25 nm)Back to article page