Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection
A polymer optical fiber SPR sensor for detecting Cu<sup>2+</sup> ion concentration in water is proposed. The sensor employs a simple side-polish structure and realizes the detection of Cu<sup>2+</sup> ion concentration by employing the chitosan (CS)/polyacrylic acid (PAA) bil...
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| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/5/461 |
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| author | Chuanxin Teng Rongping Yang Shiyuan Ying Hongyun Xia Yuting Zhang Liying Shi Shijie Deng Zining Chen Hanli Qiao Libo Yuan |
| author_facet | Chuanxin Teng Rongping Yang Shiyuan Ying Hongyun Xia Yuting Zhang Liying Shi Shijie Deng Zining Chen Hanli Qiao Libo Yuan |
| author_sort | Chuanxin Teng |
| collection | DOAJ |
| description | A polymer optical fiber SPR sensor for detecting Cu<sup>2+</sup> ion concentration in water is proposed. The sensor employs a simple side-polish structure and realizes the detection of Cu<sup>2+</sup> ion concentration by employing the chitosan (CS)/polyacrylic acid (PAA) bilayer film on the gold film of the optical fiber surface. The structure of the fiber probe is optimized, and the sensing performances for the Cu<sup>2+</sup> ion detection are analyzed experimentally. The experimental results demonstrate that the sensor exhibits a high sensitivity of 465.539 nm/ppm for the Cu<sup>2+</sup> ion detection in the concentration range of 0–0.04 ppm. And it has a fast response speed and good selectivity for Cu<sup>2+</sup> ions. The sensor has the advantages of simple structure and low cost, and has potential applications in the field of heavy metal detection. |
| format | Article |
| id | doaj-art-50b4e337532c403e80eb72b411bf353e |
| institution | DOAJ |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-50b4e337532c403e80eb72b411bf353e2025-08-20T03:14:39ZengMDPI AGPhotonics2304-67322025-05-0112546110.3390/photonics12050461Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion DetectionChuanxin Teng0Rongping Yang1Shiyuan Ying2Hongyun Xia3Yuting Zhang4Liying Shi5Shijie Deng6Zining Chen7Hanli Qiao8Libo Yuan9College of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaCollege of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaCollege of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaSchool of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, Hangzhou 310000, ChinaCollege of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaCollege of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaCollege of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaJiangxi Daishing POF Co., Ltd., Jinggangshan 343600, ChinaGeological Survey of Finland, Vuorimiehentie 5, 02151 Espoo, FinlandCollege of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaA polymer optical fiber SPR sensor for detecting Cu<sup>2+</sup> ion concentration in water is proposed. The sensor employs a simple side-polish structure and realizes the detection of Cu<sup>2+</sup> ion concentration by employing the chitosan (CS)/polyacrylic acid (PAA) bilayer film on the gold film of the optical fiber surface. The structure of the fiber probe is optimized, and the sensing performances for the Cu<sup>2+</sup> ion detection are analyzed experimentally. The experimental results demonstrate that the sensor exhibits a high sensitivity of 465.539 nm/ppm for the Cu<sup>2+</sup> ion detection in the concentration range of 0–0.04 ppm. And it has a fast response speed and good selectivity for Cu<sup>2+</sup> ions. The sensor has the advantages of simple structure and low cost, and has potential applications in the field of heavy metal detection.https://www.mdpi.com/2304-6732/12/5/461surface plasmon resonancepolymer optical fiberchitosanCu<sup>2+</sup> ion detection |
| spellingShingle | Chuanxin Teng Rongping Yang Shiyuan Ying Hongyun Xia Yuting Zhang Liying Shi Shijie Deng Zining Chen Hanli Qiao Libo Yuan Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection Photonics surface plasmon resonance polymer optical fiber chitosan Cu<sup>2+</sup> ion detection |
| title | Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection |
| title_full | Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection |
| title_fullStr | Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection |
| title_full_unstemmed | Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection |
| title_short | Chitosan/Polyacrylic Acid Functionalized Side-Polish Polymer Optical Fiber-Based SPR Sensor for Cu<sup>2+</sup> Ion Detection |
| title_sort | chitosan polyacrylic acid functionalized side polish polymer optical fiber based spr sensor for cu sup 2 sup ion detection |
| topic | surface plasmon resonance polymer optical fiber chitosan Cu<sup>2+</sup> ion detection |
| url | https://www.mdpi.com/2304-6732/12/5/461 |
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