Yaqiong XuAssistant Professor of Electrical Engineering and Physics, Vanderbilt University
Carbon-based nanomaterials, such as carbon nanotubes (CNTs) and graphene, have gained significant interest as one of the most promising materials in biological applications due to their unique physical and chemical properties. Recently we have developed an optoelectronic probing system, combining CNT/graphene transistors with scanning photocurrent measurements, fluorescence microscopy, and optical trapping techniques to investigate the molecular interface between CNTs/graphene and biological systems. We have directly measured the binding force between a single DNA molecule and a CNT and have explored how the molecular interface between CNTs and different molecules affects their biological applications. We have also integrated graphene-based scanning photocurrent microscopy with microfluidic platforms to investigate the electrical activity in neuronal networks. I will conclude by summarizing the remaining research challenges that must be surmounted in order to bring carbon-based nanomaterials into future biological applications and exploring the potential applications for other two-dimensional materials in biological fields.
Yaqiong Xu is an Associate Professor in the Department of Electrical Engineering and Computer Science at Vanderbilt University. She received a Ph.D. in electrical and computer engineering from Rice University in 2006. After a postdoc position at Cornell from 2006-2009, she joined Vanderbilt where she is an associate professor of Electrical Engineering and Physics. Her research group focuses on investigating the electrical and optoelectronic properties of low-dimensional materials and exploring their applications in biomedical and energy conversion fields.
Host: Ying Liu