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Yaqiong Xu

Associate Professor of Electrical Engineering
Associate Professor of Physics


Yaqiong's group focuses on investigating the electron, photon, and phonon coupling in carbon-based nanomaterials and exploring their applications in biological and energy conversion fields. We develop an optoelectronic probing system combining fluorescence spectroscopy, scanning photocurrent microscopy, and optical trapping techniques to study the complex interface between carbon nanotubes and DNA molecules at a single-molecule level. We integrate graphene transistors with scanning photocurrent microscopy to investigate the electrical activities of individual synapses in neuronal networks. We are also interested in synthesizing carbon nanotubes and graphene with various morphologies and exploring their possible use in solar and fuel cells.


SEC Faculty Travel Award, 2014
CFT’s Junior Faculty Teaching Fellowship, 2012
NSF CAREER Award, 2011
Chinese Government Award for Outstanding Self-Finance Students Abroad, 2006

Selected Publications:

Polarized photocurrent response in black phosphorus field-effect transistors. Hong, T; Chamlagain, B; Lin, WZ; Chuang, HJ; Pan, MH; Zhou, ZX; Xu, YQ, NANOSCALE, 6, 8978-8983 , (2014) View Abstract

Thermal and optical properties of freestanding flat and stacked single-layer graphene in aqueous media. Hong, T; Cao, YH; Ying, D; Xu, YQ, APPLIED PHYSICS LETTERS, 104, 223102 , (2014) View Abstract

Bending and twisting of suspended single-walled carbon nanotubes in solution. Xu, YQ; Barnard, A; McEuen, PL, NANO LETTERS, 9, 1609-1614 , (2009) View Abstract

Vertical array growth of small diameter single-walled carbon nanotubes. Xu, YQ; Flor, E; Kim, MJ; Hamadani, B; Schmidt, H; Smalley, RE; Hauge, RH, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 128, 6560-6561 , (2006)

Controlled multistep purification of single-walled carbon nanotubes. Xu, YQ; Peng, HQ; Hauge, RH; Smalley, RE, NANO LETTERS, 5, 163 , (2005) View Abstract