报告题目：智能可穿戴器件电化学工程化研究(Electrochemical Engineering of Graphene Oxide for Wearable Smart Devices )
Although graphene oxide (GO) has shown enduring popularity in the research community, its synthesis remains cost prohibitive for many of its demonstrated applications. While significant progress has been made on developing an electrochemical route to GO, existing methods have key limitations regarding their cost and scalability. To overcome these challenges, we employ a combination of highly robust boron-doped diamond (BDD) with a wide electrochemical potential window and commercially available fused deposition modelling (FDM) 3D printing to fabricate a scalable packed-bed electrochemical reactor (PBER) for GO production. The scalability of the reactor along the vertical and lateral dimensions was systematically demonstrated to facilitate its eventual industrial application. Our current reactor is cost-effective and capable of producing electrochemically derived graphene oxide (EGO) on a multiple-gram scale. The as-produced EGO is dispersible in water and other polar organic solvents (e.g. ethanol and DMF) and can be exfoliated down to predominantly single-layer graphene oxide. The simplicity, cost-effectiveness and unique EGO properties make our current method a viable contender for large-scale synthesis of graphene oxide. Subsequently, we have demonstrated a new efficient technique for 3D printing of conductive PDMS/graphene ink by using an emulsion method to form a uniform dispersion of PDMS nanobeads, EGO and PDMS precursor binder. The formulated nanocomposite ink exhibits high storage moduli and yield stress that can be employed for Direct Ink Writing (DIW) 3D printing. Due to the unique hybrid structure of PDMS and EGO sheet, the 3D printed EGO/PDMS nanocomposite possesses high, linear and reproducible sensitivity that is suitable for application as skin-attachable wearable health monitoring device.
Dr Yulin Zhong completed his PhD in Chemistry at the National University of Singapore (NUS) and did his post-doctoral training at Princeton University (2009) and Massachusetts Institute of Technology (2011). After spending three years in the USA, he worked as a Research Scientist at the Institute of Bioengineering and Nanotechnology, A*STAR Singapore, (2012) and thereafter, as an ARC DECRA Fellow at Monash University (2013). He took up a Senior Lecturer position at Griffith University (Gold Coast campus) in 2016 and is currently an Associate Professor at the School of Environment and Science (ESC) and Centre for Clean Environment and Energy (CCEE).
钟育霖博士毕业于新加坡国立大学化学系荣誉和博士学位，并在普林斯顿大学（2009）和麻省理工学院（2011）进行了博士后培训。在美国工作三年后，他在新加坡A * STAR生物工程和纳米技术研究所（2012）担任研究科学家，之后在莫纳什大学（2013年）担任ARC DECRA研究员。他于2016年在格里菲斯大学（黄金海岸校区）担任高级讲师职位，目前是环境与科学学院（ESC）和清洁环境与能源中心（CCEE）的副教授。