3D Chiral Plasmonic Metamaterials Fabricated by Direct Laser Writing: The Twisted Omega Particle

被引：74

作者：

Sakellari, Ioanna ^{[1
,2
]}

Yin, Xinghui ^{[1
,2
]}

Nesterov, Maxim L. ^{[1
,2
]}

Terzaki, Konstantina ^{[3
]}

Xomalis, Angelos ^{[3
]}

Farsari, Maria ^{[3
]}

机构：

[1] Univ Stuttgart, Phys Inst 4, Bldg 57, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Res Ctr SCoPE, Bldg 57, D-70569 Stuttgart, Germany

[3] IESL FORTH, N Plastira 100, Iraklion 70013, Crete, Greece

来源：

ADVANCED OPTICAL MATERIALS | 2017年 / 5卷 / 16期

关键词：

chiral metamaterials; direct laser writing; electroless silver plating; plasmonics; twisted omega; PHOTONIC METAMATERIAL; OPTICAL-ACTIVITY; NANOSTRUCTURES; CRYSTALS; FIELDS; MODEL;

D O I：

10.1002/adom.201700200

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The plasmonic version of a 3D chiral meta-atom which consists of a loop-wire structure, namely the so-called twisted omega particle, is experimentally realized. The structure is fabricated by direct laser writing and subsequent electroless silver plating, a novel technique capable of producing truly 3D photonic nanostructures. In this case, the metallic wire of finite length supports an electric dipole resonance, whereas the loop acts as a split-ring resonator which exhibits a magnetic dipole resonance, leading to the separation of right-handed circularly polarized light and the left-handed one. The arising optical activity is discussed in terms of a single oscillator model system used classically to describe the generation of natural optical activity in chiral media, and it is shown that the twisted omega particle acts as its exact plasmonic analogue.

引用

页数：6

共 36 条

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