R. Marqués, F. Martín, and M. Sorolla, Metamaterials with Negative Parameters: Theory, Design and Microwave Applications, 2007.

M. S. Boybay and O. M. Ramahi, Material characterization using complementary split-ring resonators, IEEE Trans. Instrum. Meas, vol.61, issue.11, pp.3039-3046, 2012.

C. Lee and C. Yang, Complementary split-ring resonators for measuring dielectric constants and loss tangents, IEEE Microw. Wireless Compon. Lett, vol.24, issue.8, pp.563-565, 2014.

C. Yang, C. Lee, K. Chen, and K. Chen, Noncontact measurement of complex permittivity and thickness by using planar resonators, IEEE Trans. Microw. Theory Techn, vol.64, pp.247-257, 2016.

L. Su, J. Mata-contreras, J. Naqui, and F. Martín, Splitter/combiner microstrip sections loaded with pairs of complementary split ring resonators (CSRRs): modeling and optimization for differential sensing applications, IEEE Trans. Microw. Theory Techn, vol.64, pp.4362-4370, 2016.

A. Ebrahimi, W. Withayachumnankul, S. Al-sarawi, and D. Abbott, High-sensitivity metamaterial-inspired sensor for microfluidic dielectric characterization, IEEE Sensors J, vol.14, pp.1345-1351, 2014.

A. Salim and S. Lim, Complementary split-ring resonator-loaded microfluidic ethanol chemical sensor, Sensors, vol.16, issue.11, pp.1-13, 2016.

P. Vélez, L. Su, K. Grenier, J. Mata-contreras, D. Dubuc et al., Microwave microfluidic sensor based on a microstrip splitter/combiner configuration and split ring resonators (SRR) for dielectric characterization of liquids, IEEE Sensors J, vol.17, pp.6589-6598, 2017.

J. Naqui, M. Durán-sindreu, and F. Martín, Novel sensors based on the symmetry properties of split ring resonators (SRRs), Sensors, vol.11, issue.8, pp.7545-7553, 2011.

J. Naqui and F. Martín, Transmission lines loaded with bisymmetric resonators and their application to angular displacement and velocity sensors, IEEE Trans. Microw. Theory Techn, vol.61, pp.4700-4713, 2013.

P. Vélez, J. Mata-contreras, L. Su, D. Dubuc, K. Grenier et al., Modeling and analysis of pairs of open complementary split ring resonators (OCSRRs) for differential permittivity sensing, 2017 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes, pp.20-22, 2017.