报告人简介

Dr Tawfique Hasan is a Reader (Associate Professor) in Nanomaterials Engineering in the Cambridge Graphene Centre and the Deputy Head of Electrical Engineering at Cambridge University. He also holds a concurrent professorship at Nanjing University. Before joining Cambridge, he was a Royal Academy of Engineering Research Fellow, and an NSFC International Young Scientist Research Fellow with Zhejiang University.

Tawfique’s group has a core interest in nanomaterials for (opto)electronics, photonics and sensing. Together with his graduate students and colleagues, he initiated the field of 2D crystal printable inks, and ultrafast lasers, pioneered the integration of inkjet printed 2D materials with silicon platform for (opto)electronics. One of his recent interests is in 1D nanostructures for optoelectronics.

Tawfique has published >100 peer-reviewed journal articles with >16,000 citations and 46 H index and presented >40 keynote and invited conference talks. He has co-founded two start-up companies, one of which was recently acquired.

报告摘要

Nanomaterials offer many exciting and interesting possibilities for next generation optoelectronics and photonics. My talk will be split into two very different sections.

In the first part, I will discuss fundamental considerations of solution processed 2D crystal based devices for optoelectronics and sensing. A key aspect of the discussion will revolve around manufacturability through inkjet printing and device-to-device performance variability, which are of paramount importance when their heterogeneous integration with other materials and systems are envisaged. I will also briefly discuss other functional ink systems that we develop at Cambridge.

In the latter half, I will discuss our recent work in the group towards the development of a computational spectrometer based on a single nanostructure. The entire active element of the spectrometer, where light is both detected and spectrally resolved, is scaled down to a single compositionally-graded nanowire. In particular, the system functions without the need for any complex optics or filters, representing a platform unmatched in both the simplicity and compact nature of its design. Such spectrometers could open new opportunities for almost any miniaturised spectroscopic application, including in lab-on-a-chip systems, drones, implants, and wearable devices.