@inproceedings{110dbb1304784c608e8aac88ba1cbdb2,
title = "Ultrasensitive mercury sensors based on graphene decorated with nanoparticles",
abstract = "In this work we present a highly sensitive and selective sensor for detection of mercury traces in water. The sensor is constructed by creating interdigitated metal electrodes on a graphene layer placed on SiO2/Si substrate. Nanoparticles were generated by sputtering and inert gas condensation inside an ultra-high vacuum system, and they were deposited on top of the graphene layer with the metal electrodes. The nanoparticles used in this work are gold (Au) because of their strong affinity to mercury. The sensor was tested by measuring the change in the electrical resistance of the sensor against different concentrations of Hg+2. The results demonstrate that the sensor can detect very low concentration of Hg+2 (as low as 0.05ppb) which is much below the guideline value from World Health Organization (WHO). The fabricated sensor is functional at room temperature, and it has low power requirement. Therefore, the fabricated sensor has potential to be used for practical applications related to water quality.",
keywords = "Gold, Graphene, Inert-gas condensation, Mercury sensor, Nanoparticles",
author = "Ayesh, {Ahmad I.} and Zainab Karam and Falah Awwad",
year = "2015",
language = "English",
series = "NSTI: Advanced Materials - TechConnect Briefs 2015",
publisher = "Taylor and Francis Inc.",
pages = "336--339",
editor = "Bart Romanowicz and Matthew Laudon",
booktitle = "NSTI",
note = "10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference ; Conference date: 14-06-2015 Through 17-06-2015",
}