Spatially oriented plasmonic ‘nanograter’ structures

Liu, Z; Cui, A; Gong, Z; Li, H; Xia, X; Shen, T; Li, J; Yang, H; Li, W; Gu, C

Abstract

One of the key motivations in producing 3D structures has always been the realization of metamaterials with effective constituent properties that can be tuned in all propagation directions at various frequencies. Here, we report the investigation of spatially oriented “Nanograter” structures with orientation-dependent responses over a wide spectrum by focused-ion-beam based patterning and folding of thin film nanostructures. Au nano units of different shapes, standing along specifically designated orientations, were fabricated. Experimental measurements and simulation results show that such structures offer an additional degree of freedom for adjusting optical properties with the angle of inclination, in additional to the size of the structures. The response frequency can be varied in a wide range (8 μm–14 μm) by the spatial orientation (0°–180°) of the structures, transforming the response from magnetic into electric coupling. This may open up prospects for the fabrication of 3D nanostructures as optical interconnects, focusing elements and logic elements, moving toward the realization of 3D optical circuits.

Citation

Liu, Z., Cui, A., Gong, Z., Li, H., Xia, X., Shen, T., …Gu, C. (2016). Spatially oriented plasmonic ‘nanograter’ structures. Scientific reports, 6, 28764. https://doi.org/10.1038/srep28764

• Journal Article Type: Article
• Acceptance Date: Jun 7, 2016
• Online Publication Date: Jun 30, 2016
• Publication Date: Jun 30, 2016
• Deposit Date: Aug 12, 2016
• Publicly Available Date: Aug 12, 2016
• Journal: Scientific Reports
• Print ISSN: 2045-2322
• Electronic ISSN: 2045-2322
• Publisher: Nature Publishing Group
• Volume: 6
• Pages: 28764
• DOI: https://doi.org/10.1038/srep28764
• Publisher URL: http://dx.doi.org/10.1038/srep28764
• Related Public URLs: http://www.nature.com/srep/index.html
• Additional Information: Funders : National Natural Science Foundation of China; Grant Number: 11574368, 11504414, 11574369, 91323304, 11174362, 11574385 and XDB07020200