Large-Area Nanoimprinted Colloidal Au Nanocrystal-Based Nanoantennas for Ultrathin Polarizing Plasmonic Metasurfaces

被引：80

作者：

Chen, Wenxiang ^{[1
]}

Tymchenko, Mykhailo

Gopalan, Prashanth ^{[2
]}

Ye, Xingchen ^{[3
]}

Wu, Yaoting ^{[3
]}

Zhang, Mingliang ^{[2
]}

Murray, Christopher B. ^{[2
,3
]}

Alu, Andrea

Kagan, Cherie R. ^{[1
,2
,3
]}

机构：

[1] Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

来源：

NANO LETTERS | 2015年 / 15卷 / 08期

关键词：

Plasmonics; nanocrystals; nanoimprinting; optical nanoantennas; metasurface; waveplate; ENHANCED RAMAN-SCATTERING; BROAD-BAND; PHASE DISCONTINUITIES; METAL NANOPARTICLES; LIGHT-PROPAGATION; VISIBLE-LIGHT; METAMATERIALS; LITHOGRAPHY; ARRAYS; FABRICATION;

D O I：

10.1021/acs.nanolett.5b02647

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a low-cost, large-area fabrication process using solution-based nanoimprinting and compact ligand exchange of colloidal Au nanocrystals to define anisotropic, subwavelength, plasmonic nanoindusions for optical metasurfaces. Rod-shaped, Au nanocrystal-based nano-antennas possess strong, localized, plasmonic resonances able to control polarization. We fabricate metasurfaces from rod-shaped nanoantennas tailored in size and spacing to demonstrate Au nanocrystal-based quarter-wave plates that operate with extreme bandwidths and provide high polarization conversion efficiencies in the near-to-mid infrared.

引用

页码：5254 / 5260

页数：7

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