Improvements in DNA Biosensors Using Joint Split Ring Resonators Coupled with Thin Film Microstrip Line
关键词:
DNA detection, metamaterials, sensitivity improvement, THz biosensors摘要
Detecting the presence of materials in biomedical science using THz sensors, especially thin DNA strands, needs considerably sensitive sensors. Connection of unit cells in new frequency selective surface (FSS) structure, coupled with transmission line is introduced so that not only helps to miniaturize in sensing applications through THz frequency range, but also has steeper flanks in transitions, thus leads us to have higher sensitivities. All of the results are taken out from resonant frequencies related to reflection (s11), a new property used instead of transmission loss (s21), which is measurable using THz spectrometers. The effect of analyte thickness and dielectric properties of load on frequency response is explained. This approach is a new way in recognizing very small amounts of material even with rather low dielectric constants.
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