of resonances that may be used to filter signals, sense mechanical strain, and enhance interactions with nearby objects. Simulations and field mapping reveal a whispering gallery mode of order m=7 at 2.5 GHz (FIG. 2F), which corresponds to a sharp resonant dip in the transmission spectrum between two diametrically opposite points (FIG. 21). Close agreement between measurements on and off the body suggest robustness to environmental effects. Circuits built from these basic devices may perform sophisticated functions for applications in energy transfer, sensing, and signal processing. [0093] Reference is now made to FIG. 3A, which is a schematic illustration of wireless network of two Bluetooth nodes (sensors 1 and 2) simultaneously transmitting data to a smartphone (hub). FIG. 3A illustrates the ability of the metamaterial textile to enhance the transmission of wireless signals between devices worn on the body. FIG. 3A illustrates a network of two sensor nodes, consisting of commercial Bluetooth modules attached to the left shoulder and lower back of a user, and a central hub (smartphone) worn on the abdomen of the user. Full-wave simulations of the sensors transmitting in a computational body model show confinement of energy onto the textile surface and propagation around the curvature of the body of the user. [0094] Reference is now made to FIG. 3B, which is a schematic illustration of full-wave simulations of wireless transmission in a computational human body model. Dashed lines show the cutting planes and white dots the transmitting sensor. In contrast to FIG. 3A, radiative communication performed in absence of the metamaterial textile results in about three orders of magnitude lower efficiency due to radiative losses and obstruction by the body of the user. [0095] Reference is now made to FIG. 3C, which is a schematic illustration of a relative signal strength indicator (RSSI) recorded by the smartphone from each sensor during physiological activity, according to embodiments of the present disclosure. Reference is further made to FIG. 3D, which is a schematic illustration of a comparison of RSSI averaged across each activity, while Error bars show s.d. (n=3 subjects), to FIG. 3E, which is a schematic illustration of wireless transmission (Bluetooth) latency as a function of transmit power, while error bars show s.d. (n=60 packets), and to FIG. 3F is a schematic illustration of cumulative transmission time as a function of number of packets, according to embodiments of the present disclosure. [0096] To experimentally test the robustness of this effect, real-time monitoring of the signal strength was performed with the smartphone on subjects during physiological activity. Controls were conducted by repeating the activity protocol without the metamaterial textile. FIG. 3C illustrates that the relative signal strength indicator (RSSI) from one subject during 5-min durations of standing, walking, and running was enhanced by about 3l~dB for both devices. Across a group of subjects (n=3), the enhancement averaged over each activity was ~32.ldB for the shoulder device and 32.7dB