Overview
Dr. Li’s group studies nanoscale energy and mass transport
phenomena to achieve both fundamental understandings and practical engineering
applications. We experimentally measure energy transport through individual
nanostructures and their contacts via electrons, phonons, and polaritons. We
have made highly novel and intriguing discoveries such as surface phonon
polariton-mediated heat conduction along SiC nanowires, superdiffusive
transport of one-dimensional phonons, and non-intrinsic ballistic contact thermal
resistance between carbon nanotubes, etc. In terms of mass transport, we
construct microfluidic platforms to probe the electrophysiological activities of
central nervous system neurons in controlled microenvironments with unique
techniques such as scanning photocurrent microscopy.
Awards
-Fellow, American Society for Mechanical Engineers, 2017
-Vanderbilt Chancellor’s Award for Research, 2013
-NSF Career Award, 2007
-Guo Moruo Scholarship, 1992
Selected Publications
Remarkable heat conduction mediated by non-equilibrium phonon polaritons. Pan Z, Lu G, Li X, McBride JR, Juneja R, Long M, Lindsay L, Caldwell JD, Li D, Nature, 623, 307-312, (2023) View Abstract
Observation of Superdiffusive Phonon Transport in Aligned Atomic Chains. Yang L, Tao Y, Zhu Y, Akter M, Wang K, Pan Z, Zhao Y, Zhang Q, Xu Y-Q, Chen R, Xu TT, Chen Y, Mao Z, Li D, Nature Nanotechnology, 16, 764-768, (2021) View Abstract
Ultrasensitive Graphene Optoelectronic Probes for Recording Electrical Activities of Individual Synapses. Wang R, Shi M, Brewer B, Yang L, Zhang Y, Webb DJ, Li D, Xu Y-Q , Nano Letters, 18, 5702-5708, (2018) View Abstract
Phonon Transport through Point Contacts between Graphitic Nanomaterials. Yang JK, Shen M, Yang Y, Evans WJ, Wei ZY, Chen WY, Zinn AA, Chen YF, Prasher R, Xu TT, Keblinski P, Li DY, Physical Review Letters, 112, 205901, (2014) View Abstract
Enhanced and switchable nanoscale thermal conduction due to van der Waals interfaces. Yang JK, Yang Y, Waltermire SW, Wu XX, Zhang HT, Gutu T, Jiang YF, Chen YF, Zinn AA, Prasher R, Xu TT, Li DY, Nature Nanotechnology, 7, 91-95, (2012) View Abstract
Education
Ph.D., Mechanical Engineering, University of California, 2002M.E., Mechanical Engineering and Thermal Science, Tsinghua University, 1997
B.E., Engineering Thermophysics, University of Science and Technology, 1992