Ju Li Associate Professor Room 223 LRSM (215) 898-1558 liju@seas.upenn.edu Group Page: http://mt.seas.upenn.edu

Ph.D., MIT, 2000
B.S., University of Science and Technology of China, 1994


RESEARCH INTERESTS

Materials theory and modeling. Mechanical properties of nanostructured materials. Cell mechanics. Structure and property of metallic glass. Transport, actuation and photonics. Energy storage and conversion, and catalysis. Nanoscale patterning, self assembly, and metamaterials. Multiscale modeling algorithms.


RECENT PUBLICATIONS

Atomistic Modeling of Dislocation-Microstructure Interactions at Seconds-to-Hours Timescales: Phys. Rev. Lett. 100 (2008) 025502; PNAS 104 (2007) 3031.

Metallic Glass and Nanoscale Composites: Acta Mater. 54 (2006) 4293; PNAS 104 (2007) 11155.

Topological remodeling of the red blood cell cytoskeleton: Biophysical J. 88 (2005) 3707; PNAS 104 (2007) 4937.

A solitary electron wave (ripples of red and blue, center) travels alongthe organic conductor polyacetylene, causing the polymer chain to bendin the middle. This topological defect is charge and strain carrier in the system: PNAS 103 (2006) 8943.

Molecular dynamics simulation of nanoindentation in aluminum thin film demonstrates the nucleation and evolution of dislocations that mediates plastic deformation in crystalline solids. In these images, the operation of three equivalent sources of prismatic dislocation loops left parallel piped slip marks on the bottom surface, and threading dislocations connect the top and bottom: Nature 418 (2002) 307, Science 298 (2002) 807.