Articles | Volume 15, issue 1
https://doi.org/10.5194/jsss-15-67-2026
https://doi.org/10.5194/jsss-15-67-2026
Regular research article
 | 
31 Mar 2026
Regular research article |  | 31 Mar 2026

In situ casting of polyvinyl chloride membranes in agar-bridged extended-gate field effect transistor sensors

Zahrah Jobran Alqahtani, Martin Grell, and Abeer Alqurashi

Cited articles

Al Baroot, A. F. and Grell, M.: Comparing electron- and hole transporting semiconductors in ion sensitive water-gated transistors, Mater. Sci. Semiconduct. Process., 89, 216–222, https://doi.org/10.1016/j.mssp.2018.09.018, 2019. 
Alghamdi, N., Alqahtani, Z., and Grell, M.: Sub-nanomolar detection of cesium with water-gated transistor, J. Appl. Phys., 126, 064502, https://doi.org/10.1063/1.5108730, 2019. 
Al-Hardan, N., Abdul Hamid, M., Ahmed, N., Jalar, A., Shamsudin, R., Othman, N., Kar Keng, L., Chiu, W., and Al-Rawi, H.: High Sensitivity pH Sensor Based on Porous Silicon (PSi) Extended Gate Field-Effect Transistor, Sensors, 16, 839, https://doi.org/10.3390/s16060839, 2016. 
AlQahtani, H. R., Al-Odayni, A.-B. M., Alhamed, Y., and Grell, M.: Bridged EGFET Design for the Rapid Screening of Sorbents as Sensitisers in Water-Pollution Sensors, Sensors, 23, 7554, https://doi.org/10.3390/s23177554, 2023. 
AlQahtani, H. R., Al-Odayni, A.-B. M., Zeama, M., Shekhah, O., Eddaoudi, M., and Grell, M.: Metal-organic frameworks as sensitisers for potentiometric sensors, Microchem. J., 201, 110547, https://doi.org/10.1016/j.microc.2024.110547, 2024. 
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Short summary
We developed a simple and versatile sensor that can detect harmful substances more effectively. By improving how the sensor's key component, the membrane, is made, we matched it better with the materials used to capture target chemicals. This makes the sensor easier to build and more reliable. Our work shows how choosing the right membrane material can greatly improve performance, opening the way for broader applications in detecting pollutants.
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