Towards omnidirectional, large scale, full polarization, and broadband practical invisibility cloaks: challenges and progress

Yihao Yang; Baile Zhang; Erping Li; Hongsheng Chen

doi:10.1051/epjam/2015001

All issues

Volume 1 (2014)

EPJ Applied Metamaterials, 1 (2014) 7

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Open Access

Table 1.

Properties of experimentally realized electromagnetic cloaks

Reference	Broad band	Air background	Phase preservation	Omnidirectivity	Full polarization	Object independence	Operational frequency	Size of objects
Ref. [72] (2009)	No	Yes	Yes	Yes	No	No	Microwave	~0.25 λ
Ref. [24] (2006)	No	Yes	Yes	Yes	No	Yes	Microwave	~1.5 λ
Ref. [31] (2009)	No	Yes	Yes	Yes	No	Yes	Microwave	4.4 λ
Ref. [42] (2009)	Yes	No	No	No	No	Yes	Microwave	~0.5 λ
Ref. [43] (2009) Ref. [44] (2009)	Yes	No	No	No	No	Yes	Optical	~0.3 λ
Ref. [52] (2010)	Yes	No	No	No	Yes	Yes	Optical	~0.7 λ
Ref. [53] (2010)	Yes	Yes	No	No	Yes	Yes	Microwave	~0.5 λ
Ref. [45] (2011)	Yes	No	No	No	No	Yes	Terahertz	~0.4 λ
Ref. [49] (2013)	Yes	Yes	No	No	No	Yes	Microwave	~0.24 λ
Ref. [65] (2011)	Yes	No	Yes	No	No	Yes	Optical	~1.2 λ
Ref. [66] (2011)	Yes	No	Yes	No	No	Yes	Microwave	~1 λ
Ref. [78] (2012)	Yes	Yes	No	Yes	No	Yes	Microwave	1 λ
Ref. [77] (2013)	Yes	No	Yes	No	No	Yes	Microwave	~1.2 λ
Ref. [67] (2013)	No	Yes	Yes	No	No	Yes	Microwave	~10 λ
Ref. [62] (2012)	Yes	No	Yes	No	No	Yes	Terahertz	~100 λ
Ref. [61] (2011) Ref. [60] (2011)	Yes	No	Yes	No	No	Yes	Optical	~3.5 × 10³λ
Ref. [68] (2012)	Yes	No	No	No	No	Yes	Optical	~5 × 10³λ
Ref. [71] (2013)	Yes	Yes	No	No	Yes	Yes	Optical	~5 × 10⁵λ

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