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Here, we design, fabricate, and characterize EIT-metamaterials by hybridizing two DSRRs into a single unit cell. First we, develop a method to determine the effective thickness of metamaterials which is crucial in calculating the group velocity of light. Then, we present a novel approach to enhance and dynamically tune the slow light characteristic by twisting the inner SRRs of two hybridized DSRRs...
Here, we theoretically and experimentally realize a terahertz (THz) perfect metamaterial absorber with an actively tunable frequency response. The structure is made of a complementary frequency selective surface (CFSS) and a metal backplane where the subwavelength space between them is filled with liquid crystal. By applying a voltage between CFSS and metal backplane a resonance frequency shifts about...
Here, we design, fabricate, and characterize EIT-metamaterials by hybridizing two double split ring resonators (DSRRs) into a single unit cell. First we, develop a method to determine the effective thickness of metamaterials which is crucial in calculating the group velocity of THz radiation. Then, we present a novel approach to enhance and dynamically tune the slow light characteristic by twisting...
The flexible metamaterials have promised to greatly expand our ability to realize a wide range of novel applications including new methods of sensing and cloaking. In this work, flexible metamaterial absorbers, targeted to operate at terahertz frequencies, have been designed, simulated, and fabricated. The absorber structure consisted of a conducting ground plane, a dielectric spacer, and a frequency...
In recent years a great amount of research has been focused on metamaterials, initially for fabrication of left-handed materials for use in devices such as superlenses or electromagnetic cloaking. Such devices have been developed and demonstrated in regimes from the radio frequency all the way to infrared and near optical frequencies. More recently, it has been shown that by careful adjustment of...
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