HgNO3 sensitivity of AlGaN/GaN field effect transistors functionalized with phytochelating peptides
Abstract
This study examined the conductance sensitivity of AlGaN/GaN field effect transistors in response to varying Hg/HNO3 solutions. FET surfaces were covalently functionalized with phytochelatin-5 peptides in order to detect Hg in solution. Results showed a resilience of peptide-AlGaN/GaN bonds in the presence of strong HNO3 aliquots, with significant degradation in FET ID signal. However, devices showed strong and varied response to Hg concentrations of 1, 10, 100, and 1000 ppm. The gathered statistically significant results indicate that peptide terminated AlGaN/GaN devices are capable of differentiating between Hg solutions and demonstrate device sensitivity.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 01, 2016
- Source ID
- 10.1063/1.4953806
Entities
People
- Albena Ivanisevic
- Felix Kaess
- Luis Hernandez-balderrama
- Nathaniel Rohrbaugh
- Ramón Collazo
- Ronny Kirste
Organizations
- Army Research Office
- North Carolina State University