Graphene-based chemical/ biological sensing field-effect transistor 20X more responsive, even in liquids

https://www.eurekalert.org/news-releases/1120312

"biosensors struggle in liquids: signal drift/ electrical instability... overcome using dual-gate architecture keeping electrical current constant... feedback system top gate is 10X more sensitive than bottom gate, multiplying minor chemical changes... 15X less signal drift... integrated/ stacked up to 32 sensors... healthcare/ diagnostics, environmental safety... bridges the gap between nanoscale material potential and practical, portable diagnostic tools that can be integrated into traditional electronics"