[0044] FIG. 4A is a schematic illustration of an image of a wrist-worn pulse sensor wirelessly powered by radio-waves guided along a metamaterial textile sleeve, according to embodiments of the present disclosure; [0045] FIG. 4B is a schematic illustration of an image of the energy harvesting unit on the metamaterial textile and its circuit schematic, according to embodiments of the present disclosure; [0046] FIG .4C is a schematic illustration of contactless sensing of finger proximity at distance d from the metamaterial textile, according to embodiments of the present disclosure; [0047] FIG. 4D is a schematic illustration of pulse detection and LED indication by the wireless sensor, according to embodiments of the present disclosure; [0048] FIG. 4E is a schematic illustration of sensing of finger proximity from the metamaterial textile, according to embodiments of the present disclosure; [0049] FIG. 5A(l) is a schematic illustration of the metamaterial textile indicating various dimensions that may be controlled during the metamaterial textile design, according to embodiments of the present disclosure; [0050] FIG. 5A(2) is a schematic flow chart depicting a method for manufacturing metamaterial textile, according to embodiments of the present disclosure; [0051] FIGS. 5B-5E are schematic illustrations of dispersion curves as the parameters a, b, d and h, respectively, are varied, according to embodiments of the present disclosure; [0052] FIG. 6A is a schematic illustration of an electric field profile of the metamaterial textile with transmitter (horizontal electric dipole, 5 mm length) placed at varying distance d above the surface, according to embodiments of the present disclosure; [0053] FIG. 6B is a schematic illustration of a fraction of power transmitted into the surface modes and radiative modes as a function of d, according to embodiments of the present disclosure; [0054] FIG. 7A is a schematic illustration of full-wave simulations of the electric field at 2.4 GHz for U-shapes with varying radii-of-curvature R, according to embodiments of the present disclosure; [0055] FIG. 7B is a Photograph of a wireless energy harvester (powering a red LED) placed on a flat and creased metamaterial textile, according to embodiments of the present disclosure; [0056] FIG. 7C is a schematic illustration of a normali zed Poynting vector (peak value) as a function of l=R at the bottom right point of the structure symmetric to the excitation point, according to embodiments of the present disclosure; [0057] FIGS. 8A-8C are schematic illustrations of Transmission spectrum |S$_{nm}$| for the power divider, antenna, and ring-resonator devices, respectively, measured in free-space without the human body,