Metamaterials can have exotic material properties. I have come across some metamaterial papers in which the effective permeability or permittivity can be negative. Is it possible to possess positive effective permeability or permittivity by any metamaterial design?
Thank you Saad Zahraw Sekhi for your answer. Would you please mention literature, chapters, or paper with such an example? This will be a great help. Again, Thank you.
Dear Sydur Rahman ,
This answer is copied from the wikipedia:https://en.wikipedia.org/wiki/Metamaterial,
Double positive medium[edit]
Double positive mediums (DPS) do occur in nature, such as naturally occurring dielectrics. Permittivity and magnetic permeability are both positive and wave propagation is in the forward direction. Artificial materials have been fabricated which combine DPS, ENG and MNG properties.[3][16]
To get ref. 3 and 16 refer to the link.
Best wishes
Thank you very much Abdelhalim abdelnaby Zekry for your kind information. I think I got the answer. Thank you all for helping me out on this topic. I really appreciate it.
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