Plasmonic Nanoantennae with Ultrasmall Gaps and Their Application in Surface Enhanced Raman Scattering
Using direct focused ion beam milling lithography, we show fabrication of plasmonic nanoantennae with ultrasmall inter-particle separations and different outlines. Ultrasmall gap widths are achieved by appropriately aligning coaxial apertures during the milling process. The absorbance of the fabricated nanoantennae is experimentally characterized. As an important application, surface enhanced Raman scattering is demonstrated since such densely packed plasmonic nanoantennae with ultrasmall gaps can enable strong field enhancement, leading to important potential in nanophotonics and integrated optics.
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Document Type: Short Communication
Publication date: November 1, 2015
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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