Speakers

Prof. Yunqi LIU was graduated from Nanjing University in 1975, received a doctorate from Tokyo Institute of Technology, Japan in 1991. Presently, he is a Professor at the Institute of Chemistry, Chinese Academy of Sciences (CAS), an Academician of CAS, and a Member of The World Academy of Sciences (TWAS). His current research interests include design and synthesis of molecular materials, including p-conjugated small molecules, polymers, and graphene, fabrication of related devices, including field-effect transistors and molecular electronics, and investigation of their electronic properties. He has published more than 700 papers in SCI journals, and cited by other researchers for more than 50,000 times with an h-index greater than 110. He was recognized as “Highly Cited Researchers” by Clarivate (Thomson Reuters) in Materials Science from 2014 to 2021. In addition, he has obtained 80 of granted patents, published three books and 17 book chapters. He received the National Natural Science Award (2nd grade) in 2007, 2016 and 2019, and Beijing Science and Technology Award in 2017 (1st grade). He serves on the Editorial Board Member or Advisory Board Members for Nanoscale, ACS Mater. Lett., Chin. J. Struct. Chem., SmartMat., etc.

2D Materials-Based Field-Effect Transistors for High-Performance Sensors

Abstract

The evolutionary success in information technology has been sustained by the rapid growth of sensor technology. Among various sensing techniques, field-effect transistors (FETs) with channels made of two-dimensional (2D) materials attract increasing attention for advantages such as label-free detection, fast response, easy operation, and capability of integration. With atomic thickness, 2D materials restrict the carrier flow within the material surface and expose it directly to the external environment, leading to efficient signal acquisition and conversion. In this presentation, the preparation and characterization of a few 2D materials will be introduced, 2D FET sensors are fabricated, their sensor behaviour for detection of pesticide, chiral molecules, hydroxyl free radical and COVID-19 virous are investigated.