Photo of the experimental setup. Resonant particles were positioned on two parallel foam holders located between two highly conducting planes. The probe used to scan the field distribution is seen on the top. A similiar antenna was used as the source. (Not shown on the photo. It was positioned between the conducting planes.)
Small resonant particle.
Position of two small particles in foam holders and the source dipole antenna with a quarter-wave balun.
The distribution of evanescent field created by a small dipole antenna in the presence of two small resonant particles. The source dipole is placed at , and directed along the axis. Two metal particles (Fig. 2) are placed at , and , . The particles are oriented along the axis. The frequency is . The probe is away from the top mesh of the setup. The field amplitude scale is linear.
Dependence of the field amplitude along the device axis for the same arrangement as in Fig. 4. This is a side view of the three-dimensional plot of the field distribution shown in Fig. 4. The key positions on the plot are indicated by arrows.
A periodic array of small resonant particles. The photo shows the same array in a foam holder.
The distribution of the evanescent field created by two small dipole antennas in the presence of two grids of small resonant particles. The field complex values are measured at (the first polariton resonance). Two source dipoles are placed at , and at , . The dipoles are oriented along the axis. Two grids (5 particles in each) are placed at , and , along the axis. The probe is away from the top mesh of the setup. The field scale is linear.
The same as in Fig. 7, but the field complex values are measured at (second polariton resonance).
The complete field profile calculated as a superposition of the data from Figs. 7 and 8.
Article metrics loading...
Full text loading...