Departmental Papers (ESE)


We propose the general concept of cloaking a sensor without affecting its capability to receive, measure, and observe an incoming signal. This may be obtained by using a plasmonic sensor, based on cloaking, made of materials available in nature at infrared and optical frequencies, or realizable as a metamaterial at lower frequencies. The result is a sensing system that may receive and transmit information, while its presence is not perceived by the surrounding, which may be of fundamental importance in a wide range of biological, optics, physics, and engineering applications.

Document Type

Journal Article

Date of this Version



Suggested Citation:
Alù, A. and Engheta, N. (2009). "Cloaking a Sensor." Physical Review Letters. 102, 233901.

© 2009 The American Physical Society



Date Posted: 22 December 2010

This document has been peer reviewed.