  While practical realizations of optical invisibility have been achieved so
far by various ingenious methods, they generally rely on complex materials
which prevent the wide implementation of such schemes. Here, we propose an
alternative indivisibility procedure to design objects (i.e. self-cloaked
structures) that have optical properties identical to the surrounding
environment and are, thereby, intrinsically invisible to an external observer
as such (without the necessity of an external cloak). The proposed method is
based on the uncoupling of the scattered waves from the incident radiation by
judiciously manipulating the scattering potential of a given object. We show
that such a procedure is able to yield optical invisibility for any arbitrarily
shaped object within any specified frequency bandwidth by simply employing
isotropic non-magnetic dielectric materials, without the usage of loss or gain
material. The validity of the design principle has been verified by direct
experimental observations of the spatial electric field profiles and scattering
patterns at the microwave regime. Our alternative self-cloaking strategy may
have profound implications especially in noninvasive probing and cloaked sensor
applications, where the wave penetrability into the sensor region is essential
together with its invisibility to minimize the field distortion.
