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Long-range surface plasmon Y-junctions for referenced biosensing

Long-range surface plasmon Y-junctions are demonstrated as sensors for the detection of bulk refractive index changes in solution and for protein binding. Using a fully-cladded Au stripe waveguide as a reference channel, common drift and noise in the system can be eliminated, relaxing the need for p...

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Main Authors: Wong, Wei Ru, Adikan, Faisal Rafiq Mahamd, Berini, P.
Format: Article
Published: Optical Society of America 2015
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/19435/
http://dx.doi.org/10.1364/OE.23.031098
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spelling my.um.eprints.194352018-10-11T02:11:40Z http://eprints.um.edu.my/19435/ Long-range surface plasmon Y-junctions for referenced biosensing Wong, Wei Ru Adikan, Faisal Rafiq Mahamd Berini, P. TK Electrical engineering. Electronics Nuclear engineering Long-range surface plasmon Y-junctions are demonstrated as sensors for the detection of bulk refractive index changes in solution and for protein binding. Using a fully-cladded Au stripe waveguide as a reference channel, common drift and noise in the system can be eliminated, relaxing the need for precise optical alignments. The performance of the structure is discussed theoretically, then bulk sensing is carried out experimentally with five solutions of different refractive indices, and protein sensing is demonstrated through physisorption of bovine serum albumin on a carboxyl-terminated Au stripe. The Y-junction biosensor demonstrated a very good ability to perform drift and noise suppression for fast and accurate biosensing. Optical Society of America 2015 Article PeerReviewed Wong, Wei Ru and Adikan, Faisal Rafiq Mahamd and Berini, P. (2015) Long-range surface plasmon Y-junctions for referenced biosensing. Optics Express, 23 (24). p. 31098. ISSN 1094-4087 http://dx.doi.org/10.1364/OE.23.031098 doi:10.1364/OE.23.031098
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Wong, Wei Ru
Adikan, Faisal Rafiq Mahamd
Berini, P.
Long-range surface plasmon Y-junctions for referenced biosensing
description Long-range surface plasmon Y-junctions are demonstrated as sensors for the detection of bulk refractive index changes in solution and for protein binding. Using a fully-cladded Au stripe waveguide as a reference channel, common drift and noise in the system can be eliminated, relaxing the need for precise optical alignments. The performance of the structure is discussed theoretically, then bulk sensing is carried out experimentally with five solutions of different refractive indices, and protein sensing is demonstrated through physisorption of bovine serum albumin on a carboxyl-terminated Au stripe. The Y-junction biosensor demonstrated a very good ability to perform drift and noise suppression for fast and accurate biosensing.
format Article
author Wong, Wei Ru
Adikan, Faisal Rafiq Mahamd
Berini, P.
author_facet Wong, Wei Ru
Adikan, Faisal Rafiq Mahamd
Berini, P.
author_sort Wong, Wei Ru
title Long-range surface plasmon Y-junctions for referenced biosensing
title_short Long-range surface plasmon Y-junctions for referenced biosensing
title_full Long-range surface plasmon Y-junctions for referenced biosensing
title_fullStr Long-range surface plasmon Y-junctions for referenced biosensing
title_full_unstemmed Long-range surface plasmon Y-junctions for referenced biosensing
title_sort long-range surface plasmon y-junctions for referenced biosensing
publisher Optical Society of America
publishDate 2015
url http://eprints.um.edu.my/19435/
http://dx.doi.org/10.1364/OE.23.031098
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score 13.211869

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