, Volume 11, Issue 5, pp 1213–1217 | Cite as

An Exterior Anti-Cloak

  • Yuan Tian
  • Cui Lu
  • Rong Feng Wang
  • Zhong Lei MeiEmail author


Based on transformation optics, we propose an exterior anti-cloak design in bipolar coordinates. The anti-cloak is a three-layered structure used to cancel the function of an exterior cloak. When the exterior cloak is placed close to a macroscopic object that can be seen with human eyes, the object is hidden from the outside electromagnetic detection. However, when the exterior anti-cloak is applied, the hidden object becomes visible to the electromagnetic waves. Simulation results demonstrate excellent performance of the exterior cloak and anti-cloak. Both the cloak and anti-cloak are exterior ones, which are convenient and flexible for practical application.


Transformation optics Exterior cloak Exterior anti-cloak Bipolar coordinates 



Z.L.M. acknowledges the Open Research Funds of State Key Laboratory of Millimeter Waves (Grant No. K201409) and Fundamental Research Funds for the Central Universities (Grant Nos. LZUJBKY-2015-k07, LZUJBKY-2014-43 and LZUJBKY-2015-BT10).


  1. 1.
    Pendry JB, Schurig D, Smith DR (2006) Controlling electromagnetic fields. Science 312:1780–1782CrossRefGoogle Scholar
  2. 2.
    Leonhardt U (2006) Optical conformal mapping. Science 312(5781):1777–1780CrossRefGoogle Scholar
  3. 3.
    Veselago VG (1968) The electrodynamics of substances with simultaneous negative values of epsilon and mu. Sov Phys Usp 10:509–517CrossRefGoogle Scholar
  4. 4.
    Shelby RA, Smith DR, Schultz S (2001) Experimental verification of a negative index of refraction. Science 292(5514):77–79CrossRefGoogle Scholar
  5. 5.
    Ergin T, Stenger N, Brenner P, Pendry JB, Wegener M (2010) Three-dimensional invisibility cloak at optical wavelengths. Science 328(5976):337–339CrossRefGoogle Scholar
  6. 6.
    Tichit PH, Burokur SN, Germain D, De Lustrac A (2011) Design and experimental demonstration of a high-directive emission with transformation optics. Phys Rev B 83(15):155108CrossRefGoogle Scholar
  7. 7.
    Ginis V, Tassin P, Danckaert J, Soukoulis CM, Veretennicoff I (2012) Creating electromagnetic cavities using transformation optics. New J Phys 14(3):033007CrossRefGoogle Scholar
  8. 8.
    Pendry JB, Fernändez-Domïnguez AI, Luo Y, Zhao R (2013) Capturing photons with transformation optics. Nat Phys 9(8):518–522CrossRefGoogle Scholar
  9. 9.
    Yang Y, Liu AQ, Chin LK, Zhang XM, Tsai DP, Lin CL, Zheludev NI (2012) Optofluidic waveguide as a transformation optics device for lightwave bending and manipulation. Nat Commun 3:651CrossRefGoogle Scholar
  10. 10.
    Fernändez-Domïnguez AI, Maier SA, Pendry JB (2010) Collection and concentration of light by touching spheres: a transformation optics approach. Phys Rev Lett 105(26):266807CrossRefGoogle Scholar
  11. 11.
    Lu C, Mei ZL (2015) Multi-functional lens based on conformal mapping. Opt Express 23(15):19901–19910CrossRefGoogle Scholar
  12. 12.
    Valentine J, Li J, Zentgraf T, Bartal G, Zhang X (2009) An optical cloak made of dielectrics. Nat Mater 8(7):568–571CrossRefGoogle Scholar
  13. 13.
    Gabrielli LH, Cardenas J, Poitras CB, Lipson M (2009) Silicon nanostructure cloak operating at optical frequencies. Nat Photon 3(8):461–463CrossRefGoogle Scholar
  14. 14.
    Chen X, Luo Y, Zhang J, Jiang K, Pendry JB, Zhang S. (2011) Macroscopic invisibility cloaking of visible light. Nat Commun 2:176CrossRefGoogle Scholar
  15. 15.
    Zhang B, Luo Y, Liu X, Barbastathis G (2011) Macroscopic invisibility cloak for visible light. Phys Rev Lett 106(3):033901CrossRefGoogle Scholar
  16. 16.
    Yang F, Mei ZL, Jin TY, Cui TJ (2012) Dc electric invisibility cloak. Phys Rev Lett 109(5):053902CrossRefGoogle Scholar
  17. 17.
    Lai Y, Chen H, Zhang ZQ, Chan CT (2009) Complementary media invisibility cloak that cloaks objects at a distance outside the cloaking shell. Phys Rev Lett 102(9):093901CrossRefGoogle Scholar
  18. 18.
    Yang C, Yang J, Huang M, Xiao Z, Peng J (2011) An external cloak with arbitrary cross section based on complementary medium and coordinate transformation. Opt Express 19(2):1147–1157CrossRefGoogle Scholar
  19. 19.
    Han T, Qiu CW, Tang X (2010) Distributed external cloak without embedded antiobjects. Opt Lett 35 (15):2642–2644CrossRefGoogle Scholar
  20. 20.
    Han T, Tang X, Xiao F (2009) External cloak with homogeneous material. J Phys D: Appl Phys 42 (23):235403CrossRefGoogle Scholar
  21. 21.
    Chen HY, Chan CT (2009) Cloaking at a distance from folded geometries in bipolar coordinates. Opt Lett 34(17):2649–2651CrossRefGoogle Scholar
  22. 22.
    Lai Y, Ng J, Chen H, Han D, Xiao J, Zhang ZQ, Chan CT (2009) Illusion optics: the optical transformation of an object into another object. Phys Rev Lett 102(25):253902CrossRefGoogle Scholar
  23. 23.
    Chen H, Luo X, Ma H, Chan CT (2008) The anti-cloak. Opt Express 16(19):14603–14608CrossRefGoogle Scholar
  24. 24.
    Castaldi G, Gallina I, Galdi V, Engheta N (2009) Cloak/anti-cloak interactions. Opt Express 17 (5):3101–3114CrossRefGoogle Scholar
  25. 25.
    Wang RF, Mei ZL, Yang XY, Ma X, Cui TJ (2014) Switchable invisibility cloak, anticloak, transparent cloak, superscatterer, and illusion for the Laplace equation. Phys Rev B 89(16):165108CrossRefGoogle Scholar
  26. 26.
    Chen HY (2009) Transformation optics in orthogonal coordinates. J Opt A, Pure Appl Opt 11(7):075102CrossRefGoogle Scholar
  27. 27.
    Yang F, Mei ZL, Yang XY, Jin TY, Cui TJ (2013) A negative conductivity material makes a dc invisibility cloak hide an object at a distance. Adv Funct Mater 23(35):4306–4310CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Yuan Tian
    • 1
  • Cui Lu
    • 1
  • Rong Feng Wang
    • 1
  • Zhong Lei Mei
    • 1
    • 2
    Email author
  1. 1.School of Information Science and EngineeringLanzhou UniversityLanzhouChina
  2. 2.State Key Laboratory of Millimeter WavesSoutheast UniversityNanjingChina

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