Abstract
The hybridization of the deoxyribonucleic acid (DNA) is sensed in a miniaturized electromagnetic band gap resonator, which has a resonance frequency f0=17.3 GHz when unloaded. The resonance frequency f0 is shifted to the left when a single-stranded DNA is immobilized on the resonator and to the right for an immobilized double-stranded DNA. The shifted frequencies of the two states of the DNA are separated by a span of 1 GHz in the band 16-20 GHz and are explained by different effective electrical permittivity values of single- and double-stranded DNA molecules.
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