In a recent study, scientists from Tianjin University (TJU) in China, the King Abdullah University of Science and Technology in Saudi Arabia, Osaka University in Japan, and Oklahoma State University in the US have developed a unique and easily fabricated metamaterial and successfully achieved a flat PIT window over 0.4 THz broad bandwidth.

Dominant factors

It was found that the significantly strengthened coupling and the coexistence of electrical and magnetic power exchange are the dominant factors accounting for the broadband transparency feature. In addition, tuning the PIT bandwidth could also be accomplished through adjusting the geometrical parameters of the proposed unit resonators.
Further details can be found in the journal Nanotechnology 24214003.

Further reading