报告题目: Printable 2D crystals: Challenges towards manufacturability
单位：Cambridge Graphene Centre, University of Cambridge, United Kingdom
简介：Dr Tawfique Hasan is a Reader (Associate Professor) in Nanomaterials Engineering in the Cambridge Graphene Centre, Cambridge University Engineering Department. He also holds a concurrent professorship at Nanjing University, and is a Title A Fellow and a Director of Studies in Engineering in Churchill College, Cambridge. Before joining as a University Lecturer in Cambridge in 2013, he was awarded a Royal Academy of Engineering Research Fellowship, a Junior Research Fellowship at Kings College, Cambridge and an NSFC International Young Scientist Research Fellowship.
Tawfique leads a research group within the Cambridge Graphene Centre, with core interest in functional ink formulation of 2D materials for printed (opto)electronics, photonics and wearables as well as novel porous metal oxide and their hybrids for energy and connected sensors. Together with his graduate students and colleagues, he initiated the field of 2D crystal printable inks, ultrafast lasers, pioneered the integration of inkjet printed 2D materials with silicon platform for sensing and (opto)electronics, and demonstrated the first industrial scale high speed printing of graphene ink for large area touch surfaces.
He has published >100 peer reviewed journal articles with > 15,000 citation and 42 H index and presented >40 keynote and invited conference talks. Tawfique has co-founded two start-up companies, one of which was recently acquired by Versarien plc.
The ability to formulate functional inks of 2D ctystals is of paramount importance for their ultimate commercial exploitation. I will discuss key ink formulation strategies of 2D materials for printed device applications. In the first part of my talk, I will highlight the new insights that we have gained in droplet drying dynamics and inkjet printing using solvent blends. One particular example application will focus on connected sensors for environmental monitoring in UK at fraction of a cost of traditional sensors . I will also give a brief glimpse of our results on the formulation of transparent dielectric inks based on a blend of h-BN and polymers. In the latter half of my talk, I will discuss printing on to conformable substrates  as well as production variabilities of scalable, large format prints for inexpensive technologies.