Scientific Publications

Highlights Gii-Sens has shown to be ideal electrodes for glucose biosensors. Glucose sensitivity of 22.7 μA/mM/cm^2 shows promise for metal-free sensors. The observable biocatalytic response from the electrodes, prepared through simple drop-casting methods onto commercially available 3D graphene foams, represents a promising first step to the development of metal-free biocatalytic devices based on this setup […]

Highlights The Adsorption of a pyrene-appended receptor molecule onto Gii causes significant capacitance changes (when positively charged pyridinium group is attached close to the Gii surface). Gii provides a great platform for sensing mechanism based on capacitance changes. The use of quantum capacitance in sensing can open new opportunities in wireless sensing but more in-depth […]

Highlights This label-free electrochemical immunosensor based on Gii-Sens uses the bioreceptor (mAb-cort) and analyte (cortisol) in their natural forms without any modification to study their biomolecular interaction with high affinity by decreasing non-specific adsorption. Some salient features of the proposed graphene-based (Gii) cortisol immunosensor are its simple fabrication, low cost, higher selectivity, reproducibility, and superior […]

Highlights Graphene foams (Gii) with electrodeposited birnessite MnO2 via current pulse achieved a maximum capacitance of 530 mF/cm2 at 10 mA/cm2 compared to 385 mF/cm2 for galvanostatic deposition and 240 mF/cm2 for cyclic voltammetry deposition at the same current density. Current pulse MnO2 electrode demonstrated better rate capability (61% capacitance retention switching from 0.5 to 20 mA/cm2) and cycling retention (93% after 5000 […]

Highlights Gii-Sens can help to move benchtop devices to point of care as required in the application of such assays given it’s low cost and reliable Abnormal blood lactate concentrations resulting from conditions such as sepsis can be difficult to identify and diagnose in critically ill patients. Therefore, reliable real-time lactate detection through single-point or […]

Highlights IL-10 acts as a gene regulator with functions encompass the suppression and termination of inflammatory immune responses. IL-10 is usually assayed using commercially available ELISA kits and its expression is evaluated through real-time PCR. All these techniques are reported as fast and straightforward; however, their sample preparation protocols are complex, not to mention the […]

Highlights The goal of this paper was to catalyse a reaction whereby the polymer coating absorbs oxygen to enhance hydrogen peroxide production using Gii-Sens. Graphene and graphene-oxide-related materials have been shown to be active in producing hydrogen peroxide cathodically but the yield of H2O2 may vary, dependent on conditions, defects, or doping. Here, it is […]

Highlights Pressure sensors are widely used devices in a variety of sectors from automotive, medical, industrial and consumer devices. Currently flexible pressure sensors are primarily based on capacitive, resistive and piezoelectric methods. Advanced materials such as Gii has been proposed as a promising material due to enhanced electric properties (fast device response, low recovery time […]

Highlights Part 2 of the “Ultra-Thin Graphene Foam, Gii, Based Flexible Piezoresistive Pressure Sensors for Robotics” Pressure sensors are widely used devices in a variety of sectors from automotive, medical, industrial and consumer devices. Currently flexible pressure sensors are primarily based on capacitive, resistive and piezoelectric methods. Advanced materials such as Gii has been proposed […]