Atomically flat single-crystalline gold nanostructures for plasmonic nanocircuitry

被引:400
作者
Huang, Jer-Shing [1 ]
Callegari, Victor [2 ]
Geisler, Peter [1 ]
Bruening, Christoph [1 ]
Kern, Johannes [1 ]
Prangsma, Jord C. [1 ]
Wu, Xiaofei [1 ]
Feichtner, Thorsten [1 ]
Ziegler, Johannes [1 ]
Weinmann, Pia
Kamp, Martin
Forchel, Alfred
Biagioni, Paolo [3 ]
Sennhauser, Urs [2 ]
Hecht, Bert [1 ]
机构
[1] Univ Wurzburg, Inst Phys, Wilhelm Conrad Rontgen Ctr Complex Mat Syst, Nanoopt & Biophoton Grp, D-97074 Wurzburg, Germany
[2] Swiss Fed Labs Mat Testing & Res, Elect Metrol Reliabil Lab, EMPA, CH-8600 Dubendorf, Switzerland
[3] Politecn Milan, Dipartimento Fis, CNISM, I-20133 Milan, Italy
关键词
CASIMIR FORCE; NEAR-FIELD; WAVE-GUIDE; NANOANTENNAS; GENERATION; LAYER;
D O I
10.1038/ncomms1143
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Deep subwavelength integration of high-definition plasmonic nanostructures is of key importance in the development of future optical nanocircuitry for high-speed communication, quantum computation and lab-on-a-chip applications. To date, the experimental realization of proposed extended plasmonic networks consisting of multiple functional elements remains challenging, mainly because of the multi-crystallinity of commonly used thermally evaporated gold layers. This can produce structural imperfections in individual circuit elements that drastically reduce the yield of functional integrated nanocircuits. In this paper we demonstrate the use of large (> 100 mu m(2)) but thin (< 80 nm) chemically grown single-crystalline gold flakes that, after immobilization, serve as an ideal basis for focused ion beam milling and other top-down nanofabrication techniques on any desired substrate. Using this methodology we obtain high-definition ultrasmooth gold nanostructures with superior optical properties and reproducible nano-sized features over micrometre-length scales. Our approach provides a possible solution to overcome the current fabrication bottleneck and realize high-definition plasmonic nanocircuitry.
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页数:8
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