[1] I. Liberal and N. Engheta, "Near-zero refractive index photonics," Nature Photonics, vol. 11, p. 149, 2017.
[2] I. Liberal and N. Engheta, "The rise of nearzero- index technologies," Science, vol. 358, pp. 1540-1541, 2017.
[3] S. Enoch, G. Tayeb, P. Sabouroux, N. Guérin, and P. Vincent, "A metamaterial for directive emission," Physical Review Letters, vol. 89, p.213902, 2002.
[4] G. Lovat, P. Burghignoli, F. Capolino, D. R.Jackson, and D. R. Wilton, "Analysis of directive radiation from a line source in a metamaterial slab with low permittivity," 2006.
[5] A. Alù, M. G. Silveirinha, A. Salandrino, and N. Engheta, "Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern," Physical Review B, vol. 75, p. 155410, 2007.
[6] J. Hao, W. Yan, and M. Qiu, "Super-reflection and cloaking based on zero index metamaterial," Applied Physics Letters, vol. 96, p. 101109, 2010.
[7] V. C. Nguyen, L. Chen, and K. Halterman, "Total transmission and total reflection by zero index metamaterials with defects," Physical review letters, vol. 105, p. 233908, 2010.
[8] Y. Xu and H. Chen, "Total reflection and transmission by epsilon-near-zero metamaterials with defects," Applied Physics Letters, vol. 98, p. 113501, 2011.
[9] Y. Fu, Y. Xu, and H. Chen, "Additional modes in a waveguide system of zero-indexmetamaterials
with defects," Scientific reports, vol. 4, p. 6428, 2014.
[10] W. E. Kock, "Metal-lens antennas," Proceedings of the IRE, vol. 34, pp. 828-836, 1946.
[11] M. Navarro-Cía, M. Beruete, M. Sorolla, and N. Engheta, "Lensing system and Fourier transformation using epsilon-near-zero metamaterials," Physical Review B, vol. 86, p. 165130, 2012.
[12] V. Torres, V. Pacheco-Peña, P. Rodríguez- Ulibarri, M. Navarro-Cía, M. Beruete, M. Sorolla, et al., "Terahertz epsilon-near-zero graded-index lens," Optics express, vol. 21, pp. 9156-9166, 2013.
[13] V. Torres, B. Orazbayev, V. Pacheco-Pe, x00F, J. Teniente, M. Beruete, et al., "Experimental Demonstration of a Millimeter-Wave Metallic ENZ Lens Based on the Energy Squeezing Principle," IEEE Transactions on Antennas and Propagation, vol. 63, pp. 231-239, 2015.
[14] Q. Wu, P. Pan, F.-Y. Meng, L.-W. Li, and J. Wu, "A novel flat lens horn antenna designed based on zero refraction principle of metamaterials," Applied Physics A: Materials Science & Processing, vol. 87, pp. 151-156, 2007.
[15] D. Ramaccia, F. Scattone, F. Bilotti, and A. Toscano, "Broadband Compact Horn Antennasby Using EPS-ENZ Metamaterial Lens," IEEE Transactions on Antennas and Prop agation, vol. 61, pp. 2929-2937, 2013.
[16] D. Ramaccia, M. Barbuto, A. Monti, A. Verrengia, F. Trotta, D. Muha, et al., "Exploiting Intrinsic Dispersion of Metamaterials for Designing Broadband Aperture Antennas: Theory and Experimental Verification," IEEE Transactions on Antennas and Propagation, vol. 64, pp. 1141-1146, 2016.
[17] M. Silveirinha and N. Engheta, "Design of matched zero-index metamaterials using nonmagnetic inclusions in epsilon-near-zero media," Physical Review B, vol. 75, p. 075119, 2007.
[18] I. Liberal, A. M. Mahmoud, Y. Li, B. Edwards, and N. Engheta, "Photonic doping of epsilonnear- zero media," Science, vol. 355, pp. 1058- 1062, 2017.
[19] M. Silveirinha and N. Engheta, "Tunneling of electromagnetic energy through subwavelength channels and bends using ε-near-zero materials," Physical review letters, vol. 97, p. 157403, 2006.
[20] M. G. Silveirinha and N. Engheta, "Theory of supercoupling, squeezing wave energy, and field confinement in narrow channels and tight bends using ε near-zero metamaterials," Physical Review B, vol. 76, p. 245109, 2007.
[21] B. Edwards, A. Alù, M. E. Young, M. Silveirinha, and N. Engheta, "Experimental verification of epsilon-near-zero metamaterial coupling and energy squeezing using a microwave waveguide," Physical review letters, vol. 100, p. 033903, 2008.
[22] R. Liu, Q. Cheng, T. Hand, J. J. Mock, T. J. Cui, S. A. Cummer, et al., "Experimental demonstration of electromagnetic tunneling through an epsilon-near-zero metamaterial at microwave frequencies," Physical review letters, vol. 100, p. 023903, 2008.
[23] B. Edwards, A. Alù, M. G. Silveirinha, and N. Engheta, "Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects," Journal of Applied Physics, vol. 105, p. 044905, 2009.
[24] A. M. Mahmoud and N. Engheta, "Wave– matter interactions in epsilon-and-mu-near-zero structures," Nature communications, vol. 5, 2014.
[25] M. Huang, J. Peng, and J. Yang, "Directive emission obtained by Mu and epsilon-near-zero metamaterials," Radioengineering, 2009.
[26] B. Wang and K.-M. Huang, "Shaping the radiation pattern with mu and epsilon-near-zero metamaterials," Progress In Electromagnetics Research, vol. 106, pp. 107-119, 2010.
[27] J. J. Yang, Y. Francescato, S. A. Maier, F. Mao, and M. Huang, "Mu and epsilon near zero metamaterials for perfect coherence and new antenna designs," Optics express, vol. 22, pp. 9107-9114, 2014.
[28] A. Lakhtakia and J. B. Geddes Iii, "Scattering by a nihility cylinder," AEU-International Journal of Electronics and Communications, vol. 61, pp. 62-65, 2007.
[29] Y. Li, I. Liberal, and N. Engheta, "Scattering properties of epsilon-and-mu-near-zero metamaterials," in Electromagnetics in Advanced Applications (ICEAA), 2017 International Conference on, 2017, pp. 523- 526.
[30] R. W. Ziolkowski, "Propagation in and scattering from a matched metamaterial having a zero index of refraction," Physical Review E, vol. 70, p. 046608, 2004.
[31] M. Ghaffari-Miab, S. M. H. Haddad, and R. Faraji-Dana, "A new fast and accurate time domain formulation of the method of moment (TD-MoM) for thin-wire antennas," in Microwave Conference, 2009. APMC 2009. Asia Pacific, 2009, pp. 72-75.
[32] M. Ghaffari-Miab, F. Valdes, R. Faraji-Dana, and E. Michielssen, "Time-domain integral equation solver for planar circuits over layered media using finite difference generated Green's functions," IEEE Transactions on Antennas and Propagation, vol. 62, pp. 3076-3090, 2014.
[33] K. Masumnia-Bisheh, M. Ghaffari-Miab, and K. Forooraghi, "Dyadic Green’s Function of a Conical Cavity with Impedance Spherical Cap,"IEEE Transactions on Antennas and Propagation, 2018.
[34] M. Gholizadeh and M. Ghaffari-Miab, "Analytical solution of the electric field of a line source embedded in a cylindrical mu and epsilon near zero metamaterial," in Electrical Engineering (ICEE), 2017 Iranian Conference on, 2017, pp. 2024-2027.
[35] I. V. Lindell and A. Sihvola, "Electromagnetic boundary and its realization with anisotropic metamaterial," Physical Review E, vol. 79, p. 026604, 2009.
[36] D. K. Cheng, Field and wave electromagnetics: Pearson Education India, 1989.
[37] C. A. Balanis, Advanced engineering electromagnetics: John Wiley & Sons, 1999.
[38] Q. Cheng, W. X. Jiang, and T. J. Cui, "Spatial power combination for omnidirectional radiation via anisotropic metamaterials," Physical review letters, vol. 108, p. 213903, 2012.
[39] Q. Cheng, W. Xiang Jiang, and T. Jun Cui, "Multi-beam generations at pre-designed directions based on anisotropic zero-index metamaterials," Applied Physics Letters, vol. 99, p. 131913, 2011.