Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
744831 | Sensors and Actuators B: Chemical | 2010 | 4 Pages |
Abstract
The long-term stability of antibody-functionalized, Au-gated AlGaN/GaN high electron mobility transistors for detecting botulinum toxin is reported in this study. The botulinum toxin sensor, which initially showed good data reproducibility and recyclability, was repeatedly tested over a 9-month period. The botulinum sensor was packaged and stored in phosphate buffered saline (PBS) at 4 °C in a refrigerator for long-term storage. The sensor was tested over time at room temperature and we found sensitivity losses of 2%, 12% and 28% after 3, 6 and 9 months, respectively. These results clearly demonstrate a significant step towards the realization of electronic detection of biomolecules by field-deployed sensor chips based on AlGaN/GaN HEMTs.
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Authors
Yu-Lin Wang, B.H. Chu, C.Y. Chang, C.F. Lo, S.J. Pearton, A. Dabiran, P.P. Chow, F. Ren,