Woolen carpet works quite well.

Send me any link to reach Malcolm White

Conference Paper A total absorber for THz-spectroscopy

Perfect is a big word! If you are talking FDTD simulations, if it to stop things re-entering the model the trick is to match the refractive index of your immersive absorber with your model's (i.e. no reflections) and a really high absorption coefficient. (solvers are engineering, will need to translate properties to complex permittivity or permittivity+conductivity. )

In real life? Water absorption is very high - 50/cm to 1000/cm in your range, graphene may be good. Depends what you are wanting to do.

Zoltan Vilagosh , Thank you dear Sir.

Farklı Frekans aralığında farklı mükemmel emici olan malzemeler elde edilebilir. Bu elde etmek istediğimi malzemenin özelliğine ve yapacağımız çalışmaya bağlıdır.

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