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October 4, 2018 | 3:30 p.m. - 4:45 p.m.
Category: Seminar
Location: Physics Building #245
Cost: Free

Carbon-Based Nanomaterials for Biosensing

Prof. Yaqiong Xu

Department of Electrical Engineering and Computer Science

Vanderbilt University

Thursday, October 4th @ 3:45 pm (refreshments starts at 3:30 pm)


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 in the near-equilibrium regime, where two aromatic rings spontaneously attract to each other due to the noncovalent forces between them. We have also integrated graphene-based scanning photocurrent microscopy with microfluidic platforms to investigate the electrical activities of individual synapses of primary hippocampal neurons. I will conclude by summarizing the remaining research challenges that must be surmounted in order to bring carbon-based nanomaterials into future biological applications.

Brief Bio:  Dr. Xu received her Pd.D. in Electrical Engineering from Prof. Richard Smalley’s group at Rice University in 2006. After working with Prof. Paul McEuen at Cornell University as a postdoctoral research associate for nearly three year, she joined the faculty of Vanderbilt University in 2009.


For more information about this event, please contact Zhixian Zhou at 3135772751 or