000182142 001__ 182142
000182142 005__ 20181203022902.0
000182142 0247_ $$2doi$$a10.1016/j.snb.2012.07.085
000182142 022__ $$a0925-4005
000182142 02470 $$2ISI$$a000319867500032
000182142 037__ $$aARTICLE
000182142 245__ $$aPeak Shift Measurement of Localized Surface Plasmon Resonance by a Portable Electronic System
000182142 260__ $$aLausanne$$bElsevier$$c2012
000182142 269__ $$a2012
000182142 300__ $$a7
000182142 336__ $$aJournal Articles
000182142 520__ $$aIn recent years, the characterization of surface molecular layers by localized surface plasmon resonance (LSPR) has attracted a lot of interest thanks to its ability to provide a higher spatial resolution with respect to standard SPR. LSPR can be observed as a peak in the extinction spectrum of metal nanoparticles such as gold non-connected surface patterns. A plasmon peak red shift is caused both by the presence of molecular layers on the gold surface and by molecular binding events. The current study presents a portable transmission system to observe the LSPR phenomenon that extracts the peak location employing a discrete number of light sources. The peak location extraction is performed by an algorithm that takes into account the spectral characteristics of all the components. The performance of our LSPR measurement system has been characterized on a set of Fluorinated Tin Oxide-coated slides covered with nanoislands with a diameter of approximately 30 nm. The samples have been modified with a single-stranded DNA layer and the plasmonic peak location has been determined before and after surface treatment. The samples have been characterized in parallel with a high-end spectrophotometer. The results presented demonstrated the performance of our measurement system in determining the peak location with 1 nm precision. (C) 2012 Elsevier B.V. All rights reserved.
000182142 6531_ $$aTransmission LSPR
000182142 6531_ $$aPoint-of-care
000182142 6531_ $$aLEDs
000182142 6531_ $$aPlasmonic peak
000182142 6531_ $$aNanoislands
000182142 700__ $$0243945$$aCappi, Giulia$$g198832
000182142 700__ $$0243943$$aAccastelli, Enrico$$g188024
000182142 700__ $$aCantale, Vera
000182142 700__ $$aRampi, Maria A.
000182142 700__ $$aBenini, Luca
000182142 700__ $$0243928$$aGuiducci, Carlotta$$g190693
000182142 773__ $$tSensors and Actuators B: Chemical
000182142 909C0 $$0252239$$pCLSE$$xU12017
000182142 909CO $$ooai:infoscience.tind.io:182142$$pSTI$$particle
000182142 917Z8 $$x198832
000182142 937__ $$aEPFL-ARTICLE-182142
000182142 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000182142 980__ $$aARTICLE