Degradation of cloaking by two closely neighboring cloaks

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Newtonian photorealistic ray tracing of grating cloaks and correlation-function-based cloaking-quality assessment.

Grating cloaks are a variation of dielectric carpet (or ground-plane) cloaks. The latter were introduced by Li and Pendry. In contrast to the numerical work involved in the quasi-conformal carpet cloak, the refractive-index profile of a conformal grating cloak follows a closed and exact analytical form. We have previously mentioned that finite-size conformal grating cloaks may exhibit better cl...

متن کامل

Complementary media invisibility cloak that cloaks objects at a distance outside the cloaking shell.

Based on the concept of complementary media, we propose an invisibility cloak operating at a finite frequency that can cloak an object with a prespecified shape and size within a certain distance outside the shell. The cloak is comprised of a dielectric core and an "antiobject" embedded inside a negative index shell. The cloaked object is not blinded by the cloaking shell since it lies outside ...

متن کامل

Differentiation of two closely related species of the genus Empoasca (Hem.: Cicadellidae)

پیش‌تر، گونه‌ای زنجرک از مزارع چغندرقند استان اصفهان به اشتباه به نام Empoasca decipiens (Paoli) گزارش شده است که در این نوشتار نام صحیح آن به‌صورت Empoasca meridiana Zachvatkin اعلام می‌گردد. گونه‌ی اخیر دارای سینونیم شناخته‌تری به نام Empoasca punjabensis Singh-Pruthi می‌باشد. گونه‌های آسیایی خویشاوند گونه‌ی E. decipiens، براساس شکل پیگوفر (pygofer) ژنیتالیای نر ازهم تفکیک می‌گردند، به‌طوری‌ک...

متن کامل

Isotropic nonmagnetic flat cloaks degenerated from homogeneous anisotropic trapeziform cloaks.

We propose a novel kind of trapeziform cloak requiring only homogeneous anisotropic materials. Large-scale flat cloaks can be degenerated from the general trapeziform cloak with PEC inner boundary, and be realized by isotropic nonmagnetic materials for optical frequencies with controlled index profiles and improved invisibility. With the support of PEC inner boundary, large vehicles and objects...

متن کامل

Remote acoustic cloaks

Due to the correspondence of the acoustic equations to Maxwell’s equations of one polarization in two dimensions, we exploit theoretically the acoustic counterpart of the recently proposed remote invisibility cloak. The cloak consists of a circular cylindrical core with designed bulk moduli, and an “anti-object” embedded inside a shell with anisotropic mass densities. The material parameters of...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Optics Express

سال: 2010

ISSN: 1094-4087

DOI: 10.1364/oe.18.012262