Authors: S. Keebaugh, W.J. Nam and S.J. Fonash
Affilation: The Pennsylvania State University, United States
Pages: 33 - 36
Keywords: nanowire, sensor, mercury, detection
We have developed a manufacturable and highly responsive gold nanowire sensor capable of detecting ppb concentrations of mercury in air and water. The nanowire sensor exhibits a superior response compared to thin film sensors and we have observed that this response is closely related to the morphology of the nanowire. By carefully controlling the sensor fabrication and post-processing steps, we are able to reproduce smooth, continuous nanowire morphologies and consequently obtain highly responsive and manufacturable sensors. Additionally, these nanowire sensors are very robust and capable of withstanding regeneration temperatures without significant changes in the nanowire morphology or baseline electrical properties.