Reshape the perfect electrical conductor cylinder at will
  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 (PEC) reshaper which is able to reshape a PEC cylinder arbitrarily by combining the concept of cloak, concentrator and superscatterer together. Numerical simulations are performed to demonstrate its properties. 
Huanyang Chen, Xiaohe Zhang, Xudong Luo, Hongru Ma, and C.T. Chan