DNA sensing based on single element planar double split-ring resonator

• Published in: 2009 IEEE MTT-S International Microwave Symposium Digest pp. 1685 - 1688
• Main Authors: Hee-Jo Lee, Hyun-Seok Lee, Kyung-Hwa Yoo, Jong-Gwan Yook
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.06.2009
• Subjects: biosensor; Biosensors; Couplings; deoxyribonucleic acid (DNA); DNA; DNA hybridization; Double split-ring resonators; Fabrication; Gold; Microstrip; Permeability; Resonant frequency; Transmission line measurements; Transmission line theory
• DOI: 10.1109/MWSYM.2009.5166039
• ISBN: 1424428033; 9781424428038
• ISSN: 0149-645X

In this paper, a feasibility of using double split ring resonator (DSRR) having negative permeability as a biosensor has been demonstrated. The compact DSRR has been excited by a microstrip transmission line, and the DNA hybridization in which single-stranded deoxyribonucleic acid (ss-DNA) is coupled with a complementary deoxyribonucleic acid (c-DNA), it is recognized with change in S 21 resonant frequency. When ss-DNA is immobilized onto gold (Au) surface and then is coupled with c-DNA, the resonant frequency has been changed by Deltaf ss-DNA =20 MHz and Deltaf hybridization =60 MHz for two cases. It is clear that DSRR can be utilized as a DNA sensing element at microwave regime.