Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria)
Cyanobacteria are a family of prokaryotic bacteria whose death causes the release of harmful toxins. Upon ingestion, these toxins produce symptoms similar to food poisoning and are dangerous to humans, as well as livestock. As there is no easily accessible way to remove cyanotoxins from water source...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Sensing and Bio-Sensing Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214180424001065 |
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| author | Debdyuti Mandal Tally Bovender Robert D. Geil Debabrata Sahoo Sourav Banerjee |
| author_facet | Debdyuti Mandal Tally Bovender Robert D. Geil Debabrata Sahoo Sourav Banerjee |
| author_sort | Debdyuti Mandal |
| collection | DOAJ |
| description | Cyanobacteria are a family of prokaryotic bacteria whose death causes the release of harmful toxins. Upon ingestion, these toxins produce symptoms similar to food poisoning and are dangerous to humans, as well as livestock. As there is no easily accessible way to remove cyanotoxins from water sources, thus detection before consumption is vitally important. In this article, we report a shear horizontal surface acoustic wave (SH-SAW) based sensor for the active detection of the microcystin congener, microcystin-LR (MC-LR). The sensing platform was devised on 36° YX cut-LiTaO3 which is a piezoelectric substrate. The sensor system was designed based on delay line configuration and was actively coated with silicon dioxide as a waveguide layer for better mass-load sensitivity. Unlike conventional SAW, the sensing platform utilizes a 5-count tone burst signal, enhancing sensitivity due to its sensitive coda waves. Signal transformation and analysis were made for distinct detection in the frequency domain. The sensor also incorporates the functionalization of gold nanospheres for a high surface-to-volume ratio and enhanced degree of orientation leading to better sensitivity. The sensor detection limit was down to 5.13 nM. Further evidence was provided by selectivity analysis and the sensor could identify MC-LR from the other biomarkers. |
| format | Article |
| id | doaj-art-49c602a6d2114ce4b3c55d5ad3232c1c |
| institution | Kabale University |
| issn | 2214-1804 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensing and Bio-Sensing Research |
| spelling | doaj-art-49c602a6d2114ce4b3c55d5ad3232c1c2025-01-01T05:10:20ZengElsevierSensing and Bio-Sensing Research2214-18042025-02-0147100724Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria)Debdyuti Mandal0Tally Bovender1Robert D. Geil2Debabrata Sahoo3Sourav Banerjee4Integrated Material Assessment and Predictive Simulation (iMAPS) laboratory, University of South Carolina, Columbia, SC 29208, USAIntegrated Material Assessment and Predictive Simulation (iMAPS) laboratory, University of South Carolina, Columbia, SC 29208, USADepartment of Chemistry, University of North Carolina at Chapel Hill, NC 27599, USADepartment of Agricultural Sciences, Clemson University, SC 29670, USAIntegrated Material Assessment and Predictive Simulation (iMAPS) laboratory, University of South Carolina, Columbia, SC 29208, USA; Corresponding author.Cyanobacteria are a family of prokaryotic bacteria whose death causes the release of harmful toxins. Upon ingestion, these toxins produce symptoms similar to food poisoning and are dangerous to humans, as well as livestock. As there is no easily accessible way to remove cyanotoxins from water sources, thus detection before consumption is vitally important. In this article, we report a shear horizontal surface acoustic wave (SH-SAW) based sensor for the active detection of the microcystin congener, microcystin-LR (MC-LR). The sensing platform was devised on 36° YX cut-LiTaO3 which is a piezoelectric substrate. The sensor system was designed based on delay line configuration and was actively coated with silicon dioxide as a waveguide layer for better mass-load sensitivity. Unlike conventional SAW, the sensing platform utilizes a 5-count tone burst signal, enhancing sensitivity due to its sensitive coda waves. Signal transformation and analysis were made for distinct detection in the frequency domain. The sensor also incorporates the functionalization of gold nanospheres for a high surface-to-volume ratio and enhanced degree of orientation leading to better sensitivity. The sensor detection limit was down to 5.13 nM. Further evidence was provided by selectivity analysis and the sensor could identify MC-LR from the other biomarkers.http://www.sciencedirect.com/science/article/pii/S2214180424001065Surface acoustic waves, sensorsMicrocystin-LRPoint-of-care deviceBiosensingUltrasonicsShear horizontal waves |
| spellingShingle | Debdyuti Mandal Tally Bovender Robert D. Geil Debabrata Sahoo Sourav Banerjee Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria) Sensing and Bio-Sensing Research Surface acoustic waves, sensors Microcystin-LR Point-of-care device Biosensing Ultrasonics Shear horizontal waves |
| title | Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria) |
| title_full | Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria) |
| title_fullStr | Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria) |
| title_full_unstemmed | Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria) |
| title_short | Surface acoustic waves (SAW) sensor for the active detection of Microcystin-LR (Cyanobacteria) |
| title_sort | surface acoustic waves saw sensor for the active detection of microcystin lr cyanobacteria |
| topic | Surface acoustic waves, sensors Microcystin-LR Point-of-care device Biosensing Ultrasonics Shear horizontal waves |
| url | http://www.sciencedirect.com/science/article/pii/S2214180424001065 |
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