期刊
NANOSCALE
卷 4, 期 18, 页码 5576-5580出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2nr31516e
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资金
- NNSFC [10774195, U0834001, 10974263, 11174374, 10725420]
- Ministry of Education [309024]
- Program for New Century Excellent Talents in University
- National Basic Research Program of China [2010CB923200]
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.
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