Silk Metamaterials: Metamaterial Silk Composites at Terahertz Frequencies (Adv. Mater. 32/2010)

Natural silk fibers provide the raw material to constitute biocompatible films with ideal properties for device integration, as reported by Xin Zhang, Richard D. Averitt, Fiorenzo G. Omenetto, and coworkers on p. 3527. The image shows a metamaterial structure patterned directly onto a 2 cm × 2 cm freestanding silk film placed on a bed of natural silk threads to visually recapitulate the origin and end point of the fabrication.