The estimation of a gold nanoparticles distribution using the evanescent electric field in gold nanoparticles filled surface plasmon resonance biosensing

Conference proceedings article

Authors/Editors

RARDCHAWADEE SILAPUNT

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Publication Details

Author list: Korjittavanit C., Silapunt R., Sutapun B.

Publication year: 2013

Start page: 1772

End page: 1775

Number of pages: 4

ISBN: 9781934142264

ISSN: 1559-9450

eISSN: 1559-9450

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884794946&partnerID=40&md5=83c2e2b06925dd1daeec0ba9ef45e451

Languages: English-Great Britain (EN-GB)

Abstract

The estimation of a gold nanoparticles (AuNPs) distribution using the evanescent electric field in AuNPs filled surface plasmon resonance (SPR) biosensing is proposed here. The average evanescent electric fields in the 2-dimensional (2D) sensing structure containing thin gold and saline layers are determined. The location of AuNPs from the gold/saline interface has a great influence on the shift of the evanescent field profile. The results also indicate that higher number of AuNPs with preferably uniform distribution provides very strong profile shift. The shifts observed in most profiles are well correlated with those of the surface plasmon resonance (SPR) curves.

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