Issue 18, 2012

Tuning the plasmon resonance of a nano-mouth array

Abstract

We have developed a method to fabricate a silver nano-mouth array via a cost-effective inverted hemispherical colloidal lithography method. It shows that the nano-mouth supports a strong localized surface plasmon resonance, which results in an extraordinary optical transmission peak. When the nano-mouth array is transferred onto a polydimethylsiloxane (PDMS) substrate, we show that the localized surface plasmon resonance can be tuned via the swelling and recovery of the PDMS in ethyl acetate solvent. The resonant peak can be tuned with a relative bandwidth of over 10%. We also demonstrate the refractive index sensitivity of the nano-mouth array at a wavelength of 1300 nm. This structure might be useful for optical microfluidic devices and sensors.

Graphical abstract: Tuning the plasmon resonance of a nano-mouth array

Article information

Article type
Communication
Submitted
17 Jun 2012
Accepted
07 Jul 2012
First published
10 Jul 2012

Nanoscale, 2012,4, 5576-5580

Tuning the plasmon resonance of a nano-mouth array

Y. Shen, X. Chen, Z. Dou, N. P. Johnson, Z. Zhou, X. Wang and C. Jin, Nanoscale, 2012, 4, 5576 DOI: 10.1039/C2NR31516E

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