Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application
This numerical research presents a simple hybrid structure comprised of TiO<sub>2</sub>-Cu-BaTiO<sub>3</sub> for a modified Kretschmann configuration that exhibits high sensitivity and high resolution for biosensing applications through an angular interrogation method. Recent...
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MDPI AG
2023-08-01
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| author | M. Muthumanikkam Alagu Vibisha Michael Cecil Lordwin Prabhakar Ponnan Suresh Karupiya Balasundaram Rajesh Zbigniew Jaroszewicz Rajan Jha |
| author_facet | M. Muthumanikkam Alagu Vibisha Michael Cecil Lordwin Prabhakar Ponnan Suresh Karupiya Balasundaram Rajesh Zbigniew Jaroszewicz Rajan Jha |
| author_sort | M. Muthumanikkam |
| collection | DOAJ |
| description | This numerical research presents a simple hybrid structure comprised of TiO<sub>2</sub>-Cu-BaTiO<sub>3</sub> for a modified Kretschmann configuration that exhibits high sensitivity and high resolution for biosensing applications through an angular interrogation method. Recently, copper (Cu) emerged as an exceptional choice as a plasmonic metal for developing surface plasmon sensors (SPR) with high resolution as it yields finer, thinner SPR curves than Ag and Au. As copper is prone to oxidation, especially in ambient conditions, the proposed structure involves the utilization of barium titanate (BaTiO<sub>3</sub>) film as a protection layer that not only preserves Cu film from oxidizing but enhances the performance of the sensor to a great extent. Numerical results also show that the utilization of a thin adhesive layer of titanium dioxide (TiO<sub>2</sub>) between the prism base and Cu film not only induces strong interaction between them but also enhances the performance of the sensor. Such a configuration, upon suitable optimization of the thickness of each layer, is found to enhance sensitivity as high as 552°/RIU with a figure of merit (FOM) of 136.97 RIU<sup>−1</sup>. This suggested biosensor design with enhanced sensitivity is expected to enable long-term detection with greater accuracy and sensitivity even when using Cu as a plasmonic metal. |
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| language | English |
| last_indexed | 2024-03-10T23:13:50Z |
| publishDate | 2023-08-01 |
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| series | Sensors |
| spelling | doaj.art-d24cc3c4a8be46e6ae793d84913105732023-11-19T08:50:38ZengMDPI AGSensors1424-82202023-08-012317749510.3390/s23177495Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing ApplicationM. Muthumanikkam0Alagu Vibisha1Michael Cecil Lordwin Prabhakar2Ponnan Suresh3Karupiya Balasundaram Rajesh4Zbigniew Jaroszewicz5Rajan Jha6Department of ECE, Vel Tech Rangarajan Dr Sagunthala R & D Institute of Science and Technology, Chennai 600025, Tamil Nadu, IndiaDepartment of Physics, Chikkanna Government Arts College, Tiruppur 641602, Tamil Nadu, IndiaDepartment of ECE, Vel Tech Rangarajan Dr Sagunthala R & D Institute of Science and Technology, Chennai 600025, Tamil Nadu, IndiaDepartment of ECE, Vel Tech Rangarajan Dr Sagunthala R & D Institute of Science and Technology, Chennai 600025, Tamil Nadu, IndiaDepartment of Physics, Chikkanna Government Arts College, Tiruppur 641602, Tamil Nadu, IndiaNational Institute of Telecommunications, ul. Szachowa 1, 04-894 Warsaw, PolandNanophotonics and Plasmonic Laboratory, School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 752050, Odisha, IndiaThis numerical research presents a simple hybrid structure comprised of TiO<sub>2</sub>-Cu-BaTiO<sub>3</sub> for a modified Kretschmann configuration that exhibits high sensitivity and high resolution for biosensing applications through an angular interrogation method. Recently, copper (Cu) emerged as an exceptional choice as a plasmonic metal for developing surface plasmon sensors (SPR) with high resolution as it yields finer, thinner SPR curves than Ag and Au. As copper is prone to oxidation, especially in ambient conditions, the proposed structure involves the utilization of barium titanate (BaTiO<sub>3</sub>) film as a protection layer that not only preserves Cu film from oxidizing but enhances the performance of the sensor to a great extent. Numerical results also show that the utilization of a thin adhesive layer of titanium dioxide (TiO<sub>2</sub>) between the prism base and Cu film not only induces strong interaction between them but also enhances the performance of the sensor. Such a configuration, upon suitable optimization of the thickness of each layer, is found to enhance sensitivity as high as 552°/RIU with a figure of merit (FOM) of 136.97 RIU<sup>−1</sup>. This suggested biosensor design with enhanced sensitivity is expected to enable long-term detection with greater accuracy and sensitivity even when using Cu as a plasmonic metal.https://www.mdpi.com/1424-8220/23/17/7495surface plasmon resonancebiosensorsensitivitytitanium oxidecopperbarium titanate |
| spellingShingle | M. Muthumanikkam Alagu Vibisha Michael Cecil Lordwin Prabhakar Ponnan Suresh Karupiya Balasundaram Rajesh Zbigniew Jaroszewicz Rajan Jha Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application Sensors surface plasmon resonance biosensor sensitivity titanium oxide copper barium titanate |
| title | Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application |
| title_full | Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application |
| title_fullStr | Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application |
| title_full_unstemmed | Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application |
| title_short | Numerical Investigation on High-Performance Cu-Based Surface Plasmon Resonance Sensor for Biosensing Application |
| title_sort | numerical investigation on high performance cu based surface plasmon resonance sensor for biosensing application |
| topic | surface plasmon resonance biosensor sensitivity titanium oxide copper barium titanate |
| url | https://www.mdpi.com/1424-8220/23/17/7495 |
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