Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.

Graded Nanowell Arrays: Fine Plasmonic “Library” with Adjustable Spectral Range


We present an effective approach for fabricating graded plasmonic arrays based on ordered micro-/nano-structures with geometric gradient. Ag nanowell arrays with graded geometric parameters were fabricated and systematically investigated. The order of the graded plasmonic arrays is generated by colloidal lithography, while geometric gradient is the result of inclined reactive ion etching. The surface plasma resonance (SPR) peaks were measured on different positions, which move gradually along Ag nanowell arrays with geometric gradient. Such micro-/nano-structure arrays with graded and integrated SPR peaks can work as a fine plasmonic “library” (FPL), and the spectral range can be controlled by “coarse adjustment knob” (lattice constant) and“fine adjustment knob” (pore diameter). Additionally, the spectral resolution of FPL is high, which benefits from the high value of full height/full width at half-maximum and small step size of wavelength shift (0.5 nm). Meanwhile, the FPL could be effectively applied as a well-defined model to verify the plasmonic enhancement in surface enhanced Raman scattering. As the FPL is an integrated optical material with graded individual SPR peaks, it can not only be a theoretical model for fundamental research, but also has great potential in high-throughput screening of optical materials, and multiplex sensors, etc.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 01 Mar 2017, accepted on 09 Apr 2017 and first published on 10 Apr 2017

Article type: Paper
DOI: 10.1039/C7NR01505D
Citation: Nanoscale, 2017, Accepted Manuscript
  •   Request permissions

    Graded Nanowell Arrays: Fine Plasmonic “Library” with Adjustable Spectral Range

    P. Xue, S. Ye, H. Su, S. Wang, J. Nan, X. Chen, W. Ruan, J. Zhang, Z. Cui and B. Yang, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR01505D

Search articles by author