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11	Solution-Processed Graphene for Flexible Printed Biosensors and Electromyography Tesky, Allyson R. 05 1900 (has links) Inkjet-printing of graphene is a desirable additive-manufacturing process for rapid-prototyping and centers around the readily scalable process of liquid-phase exfoliation of graphene. Unfortunately, most common solvents for this process such as N-methyl-2-pyrrolidone (NMP) or cyclohexanone/terpineol (C/T) are toxic. Dihydrolevoglucosenone, commonly known as Cyrene, is a renewable and fully biodegradable non-toxic solvent that represents an ideal alternative. Here, we demonstrate the potential of Cyrene-based graphene inks through few-layer inkjet printing on flexible substrates to produce non-toxic conductors a strain-mediated mechanism for biosensing. These strain-sensors were used to detect bodily motion for wearable electronics, where gel-based, wet-electrodes are a common feature within the broader class of sensors used in electromyography (EMG). The environmentally friendly and non-toxic nature of this solvent has promise not only for wearables, but also in agricultural and food industries where sensors need to be safe for potential contacts made to food supplies. Moreover, it has demonstrated superior suspension of graphene flakes compared to traditional solvents. graphene biosensors inkjet printing liquid-phase exfoliation LPE Cyrene sustainable electromyography EMG EEG ECG strain sensing strain sensors electrograms additive manufacturing Engineering, Biomedical Engineering, Electronics and Electrical Engineering, Materials Science

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Solution-Processed Graphene for Flexible Printed Biosensors and Electromyography