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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| Format: | Article |
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Optical Society of America
2015
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| _version_ | 1796960680433156096 |
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| 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 |
| collection | UM |
| 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. |
| first_indexed | 2024-03-06T05:48:17Z |
| format | Article |
| id | um.eprints-19435 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:48:17Z |
| publishDate | 2015 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | 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, DOI https://doi.org/10.1364/OE.23.031098 <https://doi.org/10.1364/OE.23.031098>. http://dx.doi.org/10.1364/OE.23.031098 doi:10.1364/OE.23.031098 |
| 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 |
| title | 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_short | Long-range surface plasmon Y-junctions for referenced biosensing |
| title_sort | long range surface plasmon y junctions for referenced biosensing |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT wongweiru longrangesurfaceplasmonyjunctionsforreferencedbiosensing AT adikanfaisalrafiqmahamd longrangesurfaceplasmonyjunctionsforreferencedbiosensing AT berinip longrangesurfaceplasmonyjunctionsforreferencedbiosensing |