In:
New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 48, No. 4 ( 2024), p. 1705-1714
Abstract:
Based on the inherent gain amplification ability of field-effect transistors (FETs), weak biological signals can be amplified. The present study unveils a pH sensor based on a carbon nanotube (CNT)-FET, which exhibits remarkable environmental stability. Moreover, we have successfully validated the feasibility of utilizing this CNT FET device for pH sensing, showcasing a remarkable sensitivity of V th at 82 mV pH −1 and 87 mV pH −1 for pH ranges of 1–7 and 7–13, respectively, an extensive pH range spanning from 1 to 13, as well as minimal hysteresis measuring at 0.726 mA with pH switching loops ranging from 4.85–9.12. This research not only realizes high-performance pH sensors, but also lays the foundation for the development of FET biosensors with excellent environmental stability. This is essential to ensure that FET biosensors function properly in complex systems.
Type of Medium:
Online Resource
ISSN:
1144-0546
,
1369-9261
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2024
detail.hit.zdb_id:
622959-1
detail.hit.zdb_id:
1472933-7
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