Localized Surface Plasmon Resonance Dependence on Misaligned Truncated Ag Nanoprism Dimer

Misaligned edge-to-edge dimers are the common products during the preparation of Ag nanoprism dimers using self-assembly method. However, in the self-assembly method, Ag nanoprisms are easily truncated because they are easy to oxidize in an acidic environment. In this work, modeling a truncated Ag n...

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Bibliographic Details
Published inNanoscale research letters Vol. 12; no. 1; p. 430
Main Authors Yang, Hanning, Owiti, Edgar Oduor, Jiang, Xiangqian, Li, Siren, Liu, Peng, Sun, Xiudong
Format Journal Article
LanguageEnglish
Published New York Springer US 30.06.2017
Springer Nature B.V
SpringerOpen
Subjects
Acidic oxides
Ag Nanoprism dimer
Biosensors
Chemistry and Materials Science
Dimers
Environment models
Finite element method
Low Dimensional Electric and Photonic Materials and Devices
LSPR
Materials Science
Mathematical models
Misalignment
Molecular Medicine
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Nanotechnology devices
Resonance
Self-assembly
Surface plasmon resonance
Truncation
Wavelength
Wavelengths
LSPR
Misalignment
Ag Nanoprism dimer
Truncation
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Summary:Misaligned edge-to-edge dimers are the common products during the preparation of Ag nanoprism dimers using self-assembly method. However, in the self-assembly method, Ag nanoprisms are easily truncated because they are easy to oxidize in an acidic environment. In this work, modeling a truncated Ag nanoprism on a misaligned edge-to-edge dimer provides a better understanding of the effects of the truncation and misalignment on localized surface plasmon resonance (LSPR) of the dimer. The resonant wavelength and intensity of the dimer are flexibly modulated by changing the misalignment length of the dimer. As the misalignment length increases, a stronger peak at the shorter wavelength and a weaker one at the longer wavelength are observed. The resonant wavelengths and intensities of the two peaks are also flexibly tuned by adjusting the truncated length of the Ag nanoprism in the dimer. The results are numerically demonstrated based on the finite element method (FEM) and show promising potential for nanoswitch, multi-channel tunable biosensor and other nanodevice applications.
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ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-017-2062-4