What is Structurally Programmed Textile Metasurfaces?

Structurally programmed textile metasurfaces are fabrics whose knit or weave geometry, rather than any added coating or electronic component, is engineered to manipulate electromagnetic or acoustic waves in specific ways. By controlling stitch spacing, loop shape, and yarn arrangement, the textile's structure alone creates repeating patterns that function like a metasurface, giving the fabric properties such as selective wave reflection or filtering that a conventional textile does not have.