Experimentally demonstrated a unidirectional electromagnetic cloak designed by topology optimization
2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 103, no 12, 121113- p.Article in journal (Refereed) Published
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.
Broad-Band, Transformation-Optics, Invisibility Cloak, Metamaterials, Frequencies, Fields
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-133273DOI: 10.1063/1.4821951ISI: 000324826000013ScopusID: 2-s2.0-84884827254OAI: oai:DiVA.org:kth-133273DiVA: diva2:660360
QC 201310292013-10-292013-10-292013-11-06Bibliographically approved