Shengguo Jia
Columbia University
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Publication
Featured researches published by Shengguo Jia.
Journal of Applied Physics | 2009
Shengguo Jia; Sarbajit Banerjee; Dongyun Lee; J. Bevk; Jeffrey W. Kysar; Irving P. Herman
We have studied the fracture, strain, and stress of electrophoretically deposited (EPD) films of CdSe nanocrystals as a function of the film thickness, nanocrystal size, and drying method. Fracture results from the film stress that develops with the loss of residual solvent after EPD when the film exceeds a threshold thickness that increases with nanocrystal core diameter from ∼300 to 1200 nm for core diameters from 2.3 to 5.0 nm, respectively. A hierarchical pattern of wider first generation and then narrower higher-generation cracks is observed after drying and this generational crack formation and a preferred direction for film drying are observed in real time. Delamination is seen to initiate from wider cracks, mostly between the bulk of the film and a very thin layer of nanocrystals strongly bound to the Au-coated silicon substrate. Estimates of the film toughness are made for channel cracking and delamination.
Chemistry of Materials | 2007
Wei Wang; Sarbajit Banerjee; Shengguo Jia; Michael L. Steigerwald; Irving P. Herman
Journal of Physical Chemistry C | 2008
Shengguo Jia; Sarbajit Banerjee; Irving P. Herman
Physical Review Letters | 2007
Dongyun Lee; Shengguo Jia; Sarbajit Banerjee; J. Bevk; Irving P. Herman; Jeffrey W. Kysar
Nano Letters | 2006
Sarbajit Banerjee; Shengguo Jia; Dae I. Kim; Richard D. Robinson; Jeffrey W. Kysar; J. Bevk; Irving P. Herman
Bulletin of the American Physical Society | 2008
Shengguo Jia; Sarbajit Banerjee; Dongyun Lee; J. Bevk; Jeffrey W. Kysar; Irving P. Herman
Bulletin of the American Physical Society | 2007
Wei Wang; Sarbajit Banerjee; Shengguo Jia; Michael L. Steigerwald; Irving P. Herman
Bulletin of the American Physical Society | 2007
Dongyun Lee; Shengguo Jia; Sarbajit Banerjee; J. Bevk; Irving P. Herman; Jeffrey W. Kysar
Bulletin of the American Physical Society | 2007
Shengguo Jia; Sarbajit Banerjee; Irving P. Herman
Bulletin of the American Physical Society | 2006
Wei Wang; Shengguo Jia; Sarbajit Banerjee; Michael L. Steigerwald; Irving P. Herman