| 摘要 |
<p>A cloaked sensing system renders a sensor essentially undetectable in a predetermined spectrum without degrading the detection capability of the sensor in the predetermined spectrum. A shield placed around the sensor allows an unattenuated, signal to reach the sensor, and cancels scattering of the signal from the sensor within the shield. Thus, the shield drastically reduces scattering from a sensor (rendering the sensor essentially invisible), without affecting the sensor's ability to receive and detect the incoming signal. In an example configuration, the shield may comprise relatively simple plasmonic materials available in nature for infrared and optical frequencies, or metamaterials for lower frequencies. The result is a cloaked sensing system that can receive a signal, while the sensor's presence is not easily perceived by its surroundings due to much lowered scattered radiation.</p> |
