Dr. Yulin Zhong used a combination of high-strength boron-doped diamond (BDD) with a broad electrochemical potential and commercial fused deposition modelling (FDM) 3D printing to produce a packed bed electrochemical reactor (PBER) to produce GO. Dr. Yulin Zhong also demonstrated the high efficiency of conductive PDMS/graphene inks for 3D printing by using an emulsion method to form evenly dispersed PDMS nanobeads, EGO and PDMS precursor binders. The nanocomposite ink had a high storage modulus and yield stress and can be used for direct ink writing (DIW) 3D printing. Due to the unique composite structure of PDMS and EGO, the 3D-printed EGO/PDMS nanocomposites had a high, linear and reproducible sensitivity, and were suitable for wearable health monitoring devices that can be attached to the skin.