Vol. 105
Latest Volume
All Volumes
2021-10-31
Breaking the Diffraction Limit Manifold Using Specially Designed Metamaterial Split Ring Resonator
By
Progress In Electromagnetics Research M, Vol. 105, 141-150, 2021
Abstract
A novel and efficient method to overcome the barriers of conventional diffraction limit using a specially designed metamaterial Split Ring Resonator (SRR) structure as an imaging sensor at microwave frequency is proposed. The topology of the proposed sensor is ingeniously designed to identify imaging objects having dimensions much less than the interacting wavelength λ. The split gap field region of the conventional SRR, used as the sensing region of the imaging sensor, is modified for enhancing the resolution capacity, by slightly raising the split region of the outer ring structure perpendicular to the plane of the resonator (Projected Split Ring Resonator - PSRR) which will reduce the area of the sensing region of the SRR probe considerably. The isolation of the structural parts of the SRR other than projected split region helps in using the localized evanescent field at the split region of the PSRR for imaging of minute objects having dimension ranges up to 0.0001λ by precisely choosing the split gap. The required projection height of the split region and the possible resolution limits of the PSRR sensor probe are evaluated by simulation. Experimental 2-dimensional sub-wavelength images obtained for various dielectric objects using a typical PSRR test probe having resolution capability up to 0.01λ are also presented.
Citation
Cherala Bindu, Sikha Kolamkanny Simon, Anju Sebastian, Panattil Viswanathan Aswathi, Dona Joseph, Jolly Andrews, and Vallikkavumkal Paily Joseph, "Breaking the Diffraction Limit Manifold Using Specially Designed Metamaterial Split Ring Resonator," Progress In Electromagnetics Research M, Vol. 105, 141-150, 2021.
doi:10.2528/PIERM21091203
References

1. Simon, S. K., S. P. Chakyar, A. Sebastian, J. Jose, J. Andrews, and V. P. Joseph, "Broadside coupled split ring resonator as a sensitive tunable sensor for efficient detection of mechanical vibrations," Sensing and Imaging, Vol. 20, No. 17, 1-11, 2019.

2. Umadevi, K. S., S. P. Chakyar, S. K. Simon, J. Andrews, and V. P. Joseph, "Split ring resonators made of conducting wires for performance enhancement," EPL, Vol. 118, No. 24002, 1-5, 2017.

3. Sebastian, A., S. K. Simon, S. P. Chakyar, J. Jose, V. P. Joseph, and J. Andrews, "Broadside coupled split ring resonator metamaterial structure for sensitive measurement of liquid concentrations," AIP Confer. Proceedings, Vol. 2082, No. 07002, 1-4, 2019.

4. Thomas, H., S. P. Chakyar, S. K. Simon, J. Andrews, and V. P. Joseph, "Transmission line coupled split ring resonator as dielectric thickness sensor," AIP Confer. Proceedings, Vol. 1849, No. 020003, 1-6, 2017.

5. Valagiannopoulos, C. A., "High selectivity and controllability of a parallel plate component with a filled rectangular ridge," Progress In Electromagnetics Research, Vol. 119, 497-511, 2011.
doi:10.2528/PIER11062603

6. Lee, Y., S. J. Kim, H. Park, and B. Lee, "Metamaterials and metasurfaces for sensor applications," Sensors, Vol. 17, No. 1726, 1-28, 2017.

7. El Matbouly, H., "Review on microwave metamaterial structures for near-field imaging," Microwave Systems and Applications, 359-372, 2017.

8. Ren, Z., M. S. Boybay, and O. M. Ramahi, "Near field probes for subsurface detection using split ring resonator," IEEE Trans. Microwave Theory Tech., Vol. 59, No. 2, 1064-1076, 2011.
doi:10.1109/TMTT.2010.2094201

9. Azar, M. T., N. S. Shoemaker, and S. Harris, "Non-destructive characterization of materials by evanescent microwaves," Meas. Sci. Technol., Vol. 4, No. 10, 583-590, 1993.
doi:10.1088/0957-0233/4/5/007

10. Azar, M. T., D. P. Su, A. Pohar, S. R. Leclair, and G. Ponchak, "0.4 μm spatial resolution with 1 GHz (λ = 30 cm) evanescent microwave probe," Rev. Sci. Instrum., Vol. 7, No. 3, 1725-1729, 1999.
doi:10.1063/1.1149658

11. Azar, M. T., P. S. Pathak, G. Ponchak, and S. Leclair, "Nondestructive super resolution imaging of defects and non uniformities in metals, semiconductors, dielectrics, composites, and plants using evanescent microwaves," Rev. Sci. Instrum., Vol. 70, No. 6, 2783-2792, 1999.
doi:10.1063/1.1149795

12. Azar, M. T., J. L. Katz, and S. R. Leclair, "Evanescent microwaves: A novel super-resolution noncontact nondestructive imaging technique for biological applications," IEEE Trans. Instrum. Meas., Vol. 48, No. 6, 1111-1116, 1999.
doi:10.1109/19.816123

13. Pendry, J. B., "Negative refraction makes a perfect lens," Phys. Rev. Lett., Vol. 85, No. 18, 3966-3969, 2000.
doi:10.1103/PhysRevLett.85.3966

14. Chen, T., S. Li, and H. Sun, "Metamaterial application in sensing," Sensors, 2742-2765, 2012.
doi:10.3390/s120302742

15. Bindu, C., S. P. Chakyar, A. Sebastian, S. K. Simon, J. Jose, N. Paul, K. S. Umadevi, J. Kizhakooden, J. Andrews, and V. P. Joseph, "Enhancing the resolution in imaging using folded metamaterial split ring resonator structure at microwave frequencies," AIP Confer. Proceedings, Vol. 2162, No. 020067, 1-5, 2019.

16. Bindu, C., S. P. Chakyar, A. Sebastian, J. Andrews, and V. P. Joseph, "Specially designed metamaterial split ring resonator for high resolution imaging at Microwave frequencies," IEEE Metamaterial Conference Proceedings, x450-x452, 2019.

17. Chakyar, S. P., S. K. Simon, C. Bindu, J. Andrews, and V. P. Joseph, "Complex permittivity Measurement using metamaterial split ring resonators," Journal of Applied Physics, Vol. 121, No. 054101, 1-6, 2017.

18. Valagiannopoulos, C. A., "Electromagnetic propagation into parallel plate waveguide in the presence of a skew metallic surface," Electromagnetics, Vol. 31, No. 8, 593-605, 2011.
doi:10.1080/02726343.2011.621111

19. Sydoruk, O., E. Tatartschuk, E. Shamonina, and L. Solymar, "Analytical formulation for the resonant frequency of split rings," AIP Jornal Applied, Vol. 105, No. 014903, 1-4, 2009.

20. Tagay, Z. and C. A. Valagiannopoulos, "Highly selective transmission and absorption from metasurfaces of periodically corrugated cylindrical particles," Phy. Re., Vol. 98, No. 115306, 1-10, 2018.