Journal
NANOSCALE RESEARCH LETTERS
Volume 9, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/1556-276X-9-299
Keywords
Plasmonic; Nanopillars; Dense arrays
Funding
- NEU internal funding [XNB201302, XNK201406]
- Natural Science Foundation of Hebei Province [A2013501049, F2014501127]
- Science and Technology Research Funds for Higher Education of Hebei Province [ZD20132011]
- Fundamental Research Funds for the Central Universities [N120323002]
- Specialized Research Fund for the Doctoral Program of Higher Education [20130042120048]
- Science and Technology Foundation of Liaoning Province [20131031]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry [47-4)]
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We show the fabrication of well-aligned gold and silver nanopillars with various array parameters via interference lithography followed by ion beam milling and compare the etching rates of these two metallic materials. Silver is suitable for fabricating ultrafine arrays with ultrasmall separations due to high milling rates. The optical properties of the fabricated nanopillars are specifically characterized from both normal incidence and oblique incident angles. Tunable surface plasmon resonances are achieved with varying structural parameters. Strong coupling effects are enabled when the separation between adjacent nanopillars is dramatically reduced, leading to useful applications in sensing and waveguiding.
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