Speaker
Description
Electromagnetic metamaterials can interact and change light’s properties. We fabricated a microwave metamaterial that has electronic ring resonators which impact the incoming microwaves’s electromagnetic fields. Metamaterials are used in a variety of applications, in invisibility cloaks, perfect absorbers, solar cells, super lens, and more. We used a microwave 2.8cm wavelength Sargent Welch transmitter that emits coherent and polarized waves to emit microwaves at the back plates of the metamaterial and the metal plates at certain angles. We also used a microwave diode probe that was placed between the metamaterial’s gap and the two metal plates' gap, which is how we were able to measure the power output. Our research found that resonance occurs at intervals of 1.4cm as the gap height for our metamaterial changes. Metamaterials are able to create resonance, but compared to a similar wave entering two reflective metal plates of the same distance and angle, the energy received is generally the same for the metamaterial than the two reflective plates as they change gap heights. We were also able to make a model equation that predicts the amplitude and wavelength of the resonance graph as a function of gap height.
