Correction: Md. Mehedi Hasan, et al. Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application. Appl. Sci. 2017, 7, 1071

We, the authors, wish to update the caption of Figure 1 and the Reference section in our published paper [1]. The new caption of Figure 1 is as follows:

Figure 1. Examples of several meta-atom based metamaterial (MTM) structures through periodic repetition of metallic and dielectric elements: (a) double-fishnet negative-index metamaterial with several layers. Reproduced with permission from [Xiao, S. et al.], [Opt. Lett.]; published by [The Optical Society], [2009] [6]; (b) chiral metamaterial fabricated through stacked electron-beam lithography. From [Soukoulis, C.M. et al. Optical Metamaterials—More Bulky and Less Lossy. Science 2010, 330, 1633–1634]. Reprinted with permission from Soukoulis, C.M. [7]; (c) chiral metamaterial made using direct-laser writing and electroplating. From [Ganse, J.K. et al. Gold Helix Photonic Metamaterial as Broadband Circular Polarizer. Science 2009, 325, 1513–1515]. Reprinted with permission from AAAS [8]; (d) hyperbolic metamaterial made by electroplating hexagonal-hole-array templates. From [Ganse, J.K. et al. Gold Helix Photonic Metamaterial as Broadband Circular Polarizer. Science 2009, 325, 1513–1515]. Reprinted with permission from AAAS [8]; (e) metal-dielectric layered metamaterial composed of coupled plasmonic waveguides. Reproduced from [Gao, J. et al. Experimental realization of epsilon-near-zero metamaterial slabs with metal-dielectric multilayers. Appl. Phys. Lett. 2013, 103, 051111], with the permission of AIP Publishing [9]; (f) Split ring resonators (SRRs) oriented in all three dimensions. Reproduced from [Chen, Y. et al. Acoustic band gaps of three-dimensional periodic polymer cellular solids with cubic symmetry. Appl. Phys. Lett. 2013, 114, 043521], with the permission of AIP Publishing [10]; (g) wide-angle visible negative-index metamaterial based on a coaxial design. From [Soukoulis, C.M. et al. Optical Metamaterials—More Bulky and Less Lossy. Science 2010, 330, 1633–1634]. Reprinted with permission from Soukoulis, C.M. [7]; (h) connected cubic-symmetry negative-index metamaterial. Reproduced with permission from [Ji, R. et al.], [Nanoscale]; published by [Royal Society of Chemistry], [2016] [11]; (i) metal cluster-of-clusters visible-frequency magnetic metamaterial. Reproduced with permission from [Wang, L. et al.], [Adv. Mater.]; published by [Wiley], [2011] [12]; (j) negative-index metamaterial composed of two sets of high-refractive-index dielectric spheres arranged on a simple cubic lattice. NRI, negative refractive index. Reproduced with permission from [Wang, L. et al.], [Adv. Mater.]; published by [Wiley], [2011] [12].

The following references have been added and the other reference numbers have updated accordingly.

6.

Xiao, S.; Chettiar, U.K.; Kildishev, A.V.; Drachev, V.P.; Shalaev, V.M. Yellow-light negative-index metamaterials. Opt. Lett. 2009, 34, 3478–3480.

7.

Soukoulis, C.M.; Wegener, M. Optical Metamaterials—More Bulky and Less Lossy. Science 2010, 330, 1633–1634.

8.

Ganse, J.K.; Thiel, M.; Rill, M.S.; Decker, M.; Bade, K.; Saile, V.; Freymann, G.V.; Linden, S.; Wegener, M. Gold Helix Photonic Metamaterial as Broadband Circular Polarizer. Science 2009, 325, 1513–1515.

9.

Gao, J.; Sun, L.; Deng, H.; Mathai, C.J.; Gangopadhyay, S. Experimental realization of epsilon-near-zero metamaterial slabs with metal-dielectric multilayers. Appl. Phys. Lett. 2013, 103, 051111.

10.

Chen, Y.; Yao, H.; Wang, L. Acoustic band gaps of three-dimensional periodic polymer cellular solids with cubic symmetry. Appl. Phys. Lett. 2013, 114, 043521.

11.

Ji, R.; Wang, S.W.; Liu, X.; Chen, X.; Lu, W. Broadband circular polarizers constructed using helix-like chiral metamaterials. Nanoscale 2016, 8, 14725–14729. Available online: http://pubs.rsc.org/en/content/articlelanding/2016/nr/c6nr01738j#!divAbstract (accessed on 4 January 2018).

12.

Wang, L.; Lau, J.; Thomas, E.L.; Boyce, M.C. Co-Continuous Composite Materials for Stiffness, Strength, and Energy Dissipation. Adv. Mater. 2011, 23, 1524–1529. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

The authors would like to apologize for any inconvenience caused. The change does not affect the scientific results. The manuscript will be updated and the original will remain online on the article webpage.