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We experimentally studied the tunable effects of connective dendritic left-handed metamaterials based on electrorheological fluids. Three influencing factors-the distance of electrodes,the permittivity of embedding media,and the intensity of applied electric fields-are discussed respectively. The experimental results show that the distance of electrodes exhibits an important effect on the transmission peak of the samples. The left-handed transmission peak shifts to lower frequency when the electrorheological fluids infiltrate. Moreover,by changing the intensity of electric field,the left-handed transmission peak can be modulated actively,and the maximum shift is up to 140 MHz.
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Keywords:
- connective dendritic structure /
- electrorheological fluids /
- permittivity /
- left-handed transmission peak
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