Highly sensitive miniaturized bio-sensor using 2-layer double split ring resonators

THz biosensors are used to detect the presence of materials in Biomedical Science, especially thin DNA strands, therefore needs considerably high sensitivity. In this paper, we introduce a new structure made up of Metamaterials, which is used for identification of very thin analytes according to their dielectric constants. Procedures for lowering the resonant frequency and increasing the sensitivity of the sensor, simultaneously, are presented. High sensitivity of (Δf_r/f_r = 2.73% for Δε_r = 1), in average, is reported and 10 nm thick DNA (ε_r = 3.2) was detected due to miniaturization techniques.