Electrically Modulated Localized Surface Plasmon around Self-Assembled-Monolayer-Covered Nanoparticles

Langmuir ◽  
2017 ◽  
Vol 33 (6) ◽  
pp. 1437-1441 ◽  
Author(s):  
Liyuan Ma ◽  
Shandong Xu ◽  
Chaoming Wang ◽  
Haining Wang ◽  
Shengli Zou ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Localized Surface Plasmon ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
Electrically Modulated

Determination of pseudo-refractive index in self-assembled ligand layers from spectral shift of surface plasmon resonances in colloidal silver nanoplates

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Pavel Malakhovsky ◽  
Dmitry Murausky ◽  
Dmitry Guzatov ◽  
Sergey Gaponenko ◽  
Mikhail Artemyev
Keyword(s):  
Refractive Index ◽  
Surface Plasmon ◽  
Mie Theory ◽  
Spectral Shift ◽  
Localized Surface Plasmon ◽  
Clear Trend ◽  
Silver Nanoplates ◽  
Assembled Monolayers ◽  
Self Assembled

Abstract We examined systematically how self-assembled monolayers (SAMs) of different mercaptoacids affect the spectral shift of the localized surface plasmon resonance in silver nanoplates and nanospheres. We observed a clear trend in the magnitude of a redshift with a molecular length or the SAM thickness within a homologous series of aliphatic mercaptoacids: the thicker shell the stronger the red shift. Using classic Mie theory for plasmonic core-dielectric shell spheres and oblate spheroids we developed the method for determination of a pseudo-refractive index in SAM of different molecules and obtained a good correlation with the reference refractive indices for bulk long-chain aliphatic acids, but only in case of silver nanoplates. Calculations for silver core–shell nanospheres gave overestimated values of refractive index perhaps due to restrictions of Mie theory on the minimum particle size.

Poly-(3-hexylthiophene) self-assembled monolayer based cholesterol biosensor using surface plasmon resonance technique

2007 ◽  
Vol 22 (11) ◽  
pp. 2516-2524 ◽  
Author(s):  
Sunil K. Arya ◽  
Pratima R. Solanki ◽  
S.P. Singh ◽  
K. Kaneto ◽  
Manoj K. Pandey ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Self Assembled Monolayer ◽  
Resonance Technique ◽  
Self Assembled ◽  
Cholesterol Biosensor
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