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Experimentally demonstrated a unidirectional electromagnetic cloak designed by topology optimization
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
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2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 103, no 12, 121113- p.Article in journal (Refereed) Published
Abstract [en]

Electromagnetic invisible devices usually designed by transformation optics are rather complicated in material parameters and not suitable for general applications. Recently, a topology optimized cloak based on level-set method was proposed to realize nearly perfect cloaking [Fujii, Appl. Phys. Lett. 102, 251106 (2013)]. In this work, we experimentally implemented this idea and fabricated a unidirectional cloak with a relative large invisible region made of single dielectric material. Good cloaking performance was verified through measurement which consists very well with numerical simulation. The advantages and disadvantages of this optimization method are also discussed.

Place, publisher, year, edition, pages
2013. Vol. 103, no 12, 121113- p.
Keyword [en]
Broad-Band, Transformation-Optics, Invisibility Cloak, Metamaterials, Frequencies, Fields
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-133273DOI: 10.1063/1.4821951ISI: 000324826000013Scopus ID: 2-s2.0-84884827254OAI: oai:DiVA.org:kth-133273DiVA: diva2:660360
Note

QC 20131029

Available from: 2013-10-29 Created: 2013-10-29 Last updated: 2017-12-06Bibliographically approved

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