In this paper, one curved active phase gradient metasurface (PGM) is proposed for enhancement of RCS of a special obtuse dihedral corner, while the other is planar PGM. the active metasurface ...

A dihedral corner reflector array (DCRA) is an optical system that displays images in the air. It faces a drawback of reduced visibility of the aerial image due to stray light, which is referred to as ...

Rational construction of covalent organic frameworks (COFs) with novel structures still remains a challenge. Herein, we report the designed synthesis of two COFs, 2D-BPTA-COF and 3D-BMTA-COF, starting ...