Non-Euclidean cloaking for light waves (2009)
Tyc, Tomas, Chen, Huanyang, Chan, Che Ting, Leonhardt, Ulf
Non-Euclidean geometry combined with transformation optics has recently led to the proposal of an invisibility cloak that avoids optical singularities and therefore can work, in principle, in a broad...
Illusion optics: The optical transformation of an object into another object (2009)
Lai, Yun, Ng, Jack, Chen, HuanYang, Han, DeZhuan, Xiao, JunJun, Zhang, Zhao- Qing, ...
We propose to use transformation optics to generate a general illusion such that an arbitrary object appears to be like some other object of our choice. This is achieved by using a remote device that...
A simple route to a tunable electromagnetic gateway (2009)
Chen, Huanyang, Chan, Che Ting, Liu, Shiyang, Lin, Zhifang
Transformation optics is used to design a gateway that can block electromagnetic waves but allows the passage of other entities. Our conceptual device has the advantage that it can be realized with...
Transformation optics in orthogonal coordinates (2008)
The author proposes the methodology of transformation optics in orthogonal coordinates to obtain the material parameters of the transformation media from the mapping in orthogonal coordinates....
Ng, Jack, Chen, Huanyang, Chan, C. T.
Using the idea of transformation optics, we propose a metamaterial device that serves as a frequency-selective super-absorber, which consists of an absorbing core material coated with a shell of...
Lai, Yun, Chen, Huanyang, Zhang, Zhao-Qing, Chan, C. T.
Based on the concept of complementary media, we propose an invisibility cloak operating at a finite frequency that can cloak an object with a pre-specified shape and size within a certain distance...
Reshape the perfect electrical conductor cylinder at will (2008)
Chen, Huanyang, Zhang, Xiaohe, Luo, Xudong, Ma, Hongru, Chan, C. T.
A general method is proposed to design the cylindrical cloak, concentrator and superscatterer with arbitrary cross section. The method is demonstrated by the design of a perfect electrical conductor...
Superscatterer: Enhancement of scattering with complementary media (2008)
Yang, Tao, Chen, Huanyang, Luo, Xudong, Ma, Hongru
Based on the concept of complementary media, we propose a novel design which can enhance the electromagnetic wave scattering cross section of an object so that it looks like a scatterer bigger than...
Chen, Huanyang, Luo, Xudong, Ma, Hongru, Chan, C. T.
A kind of transformation media, which we shall call the "anti-cloak", is proposed to partially defeat the cloaking effect of the invisibility cloak. An object with an outer shell of "anti-cloak" is...
Transformation media that turn a narrow slit into a large window (2008)
Zhang, Xiaohe, Chen, Huanyang, Luo, Xudong, Ma, Hongru
Based on the transformation media theory, the authors propose a way to replace a wide window with a narrow slit filled with designed metamaterial to achieve the same transmittance as the one of the...
Electromagnetic wave manipulation using layered systems (2008)
We show that the optical properties of an oblique layered system with two kinds of isotropic materials can be described using the concept of transformation media as long as the thickness of the...
Time delays and energy transport velocities in three dimensional ideal cloaking (2007)
We obtained the energy transport velocity distribution for a three dimensional ideal cloak explicitly. Near the operation frequency, the energy transport velocity has rather peculiar distribution....
On some constraints that limit the design of an invisibility cloak (2007)
Chen, Huanyang, Jiang, Xunya, Chan, C. T.
Using the idea of transformation medium, a cloak can be designed to make a domain invisible for one target frequency. In this article, we examine the possibility to extend the bandwidth of such a...
Transformation media that rotate electromagnetic fields (2007)
We suggest a way to manipulate electromagnetic wave by introducing a rotation mapping of coordinates that can be realized by a specific transformation of permittivity and permeability of a shell...
Scattering of elastic waves by elastic spheres in a NaCl-type phononic crystal (2006)
Chen, Huanyang, Luo, Xudong, Ma, Hongru
Based on the formalism developed by Psarobas et al [Phys. Rev. B 62, 278(2000)], which using the multiple scattering theory to calculate properties of simple phononic crystals, we propose a very...