CST – Computer Simulation Technology

Title:
Route towards cylindrical cloaking at visible frequencies using an optimization algorithm
Author(s):
Andreas Rottler, Benjamin Krüger, Detlef Heitmann, Daniela Pfannkuche, Stefan Mendach
Source:
PHYSICAL REVIEW B
Vol./Issue/Date:
Volume: 86, Issue: 24, 19 December 2012
Year:
2012
Page(s):
245120 - 245120-6
Keywords:
cylindrical cloaking, optimization algorithm
Abstract:
We derive a model based on theMaxwell-Garnett effective-medium theory that describes a cylindrical cloaking shell composed of metal rods which are radially aligned in a dielectric host medium.We propose and demonstrate a minimization algorithm that calculates for given material parameters the optimal geometrical parameters of the cloaking shell such that its effective optical parameters fit the best to the required permittivity distribution for cylindrical cloaking. By means of sophisticated full-wave simulations we find that a cylindrical cloak with good performance using silver as the metal can be designed with our algorithm for wavelengths in the red part of the visible spectrum (623 nm < ? < 773 nm). We also present a full-wave simulation of such a cloak at an exemplary wavelength of ? = 729 nm (¯h? = 1.7 eV) which indicates that our model is useful to find design rules of cloaks with good cloaking performance. Our calculations investigate a structure that is easy to fabricate using standard preparation techniques and therefore pave the way to a realization of guiding light around an object at visible frequencies, thus rendering it invisible.
Document:

Back to References

contact support

Your session has expired. Redirecting you to the login page...

We use cookie to operate this website, improve its usability, personalize your experience, and track visits. By continuing to use this site, you are consenting to use of cookies. You have the possibility to manage the parameters and choose whether to accept certain cookies while on the site. For more information, please read our updated privacy policy


Cookie Management

When you browse our website, cookies are enabled by default and data may be read or stored locally on your device. You can set your preferences below:


Functional cookies

These cookies enable additional functionality like saving preferences, allowing social interactions and analyzing usage for site optimization.


Advertising cookies

These cookies enable us and third parties to serve ads that are relevant to your interests.