Metamaterial structure unit, metamaterial and electronic device

A metamaterial structure unit, comprising a first substrate and a second substrate opposite to each other, a liquid crystal layer between the first substrate and the second substrate, a first electrode on the first substrate and a second electrode on the second substrate, wherein

• the first electrode comprises a first connecting portion, a first strip structure and a plurality of first circular arc structures on a first circumference, the first strip structure is distributed along a radial direction of the first circumference and is separated from the first circular arc structures, the first connecting portion is electrically connected to the first strip structure and the plurality of first circular arc structures,
• the second electrode comprises a second connecting portion, a second strip structure and a plurality of second circular arc structures on a second circumference, the second strip structure is distributed along a radial direction of the second circumference and is separated from the second circular arc structures, the second connecting portion is electrically connected to the second strip structure and the plurality of second circular arc structures,
• in a case that the first electrode is rotated by 90 degrees around a center of the first circumference, a projection of the first electrode on the second substrate in a direction perpendicular to the second substrate coincides with the second electrode.