We present a new electrochemical sensor for Flunitrazepam using disposable and economic Screen Printed Graphene Electrodes. It was found that the electrochemical response of this sensor was improved compared to Screen Printed Graphite Electrodes and displayed an excellent analytical performance for the detection of Flunitrazepam. Those characteristics could be attributed to the high Flunitrazep...

Monitoring dissolved oxygen is essential to marine research, but the high redox potentials required drive sensing reactions have posed an ongoing instability issue in sensors. Here, a novel dual-gate configuration for organic electrochemical transistors that extends device stability window demonstrated. This paper presents sensor operating principle relates channel conductance on two gates. bro...