{"id":371013,"date":"2024-07-08T17:44:02","date_gmt":"2024-07-08T17:44:02","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/371013\/"},"modified":"2024-07-08T17:44:02","modified_gmt":"2024-07-08T17:44:02","slug":"371013","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/371013\/","title":{"rendered":"Reply To: 10^10 difference in Loss with Multi-coefficient material model"},"content":{"rendered":"<p>&lt;p&gt;When the material loss is very small, it is dfficult to exactly eliminate the loss in FDTD material fitting, since the real and imaginary part must obey the kk relation. If it is much less dispersive for the real part, you can use a dielectric material with index in the object panel to set only one value to such material. This will ensure there is no loss from the material. &nbsp;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/07\/08-07-2024-1720460628-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-371013","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"When the material loss is very small, it is dfficult to exactly eliminate the loss in FDTD material fitting, since the real and imaginary part must obey the kk relation. If it is much less dispersive for the real part, you can use a dielectric material with index in the object panel to set only\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/371013\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: 10^10 difference in Loss with Multi-coefficient material model | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"When the material loss is very small, it is dfficult to exactly eliminate the loss in FDTD material fitting, since the real and imaginary part must obey the kk relation. 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