Yujie Wei
Brown University, Box D, Barus and Holly, Room 737, Providence RI, 02912 Phone: (1) 857-928-7532 (cell), (1)401-863-2864(office)   
Fax:     (1) 401-863-9009
E-mail: yujie_wei@brown.edu;  weiyj@alum.mit.edu

 

Welcome to Yujie’s website. I am now a Postdoctoral Research Associate in the Solid Mechanics Group at Brown University, working with professor Huajian Gao  and professor Allan Bower on Grain boundary deformation in nanostructured materials, e.g., thin films and nanocrystalline materials. I have worked with professor Lallit Anand on nanocrystalline materials and completed my PhD dissertation on this topic at Massachusetts Institute of Technology. My master thesis is on catastrophic rupture of brittle materials, done under the advising of professor Yilong Bai in the Institute of Mechanics, Chinese Academy of Sciences. I got my Bachelor's degree at Peking University.  

Journal Publications

Yujie Wei. Physical interpretation of the maximum receptor-ligand bond spacing to ensure cell adhesion in ligand-coated substrates, Langmuir, Volume 24, No. 11, June 3, Page 5644 - 5646 (2008), (details and download) http://dx.doi.org/10.1021/la800048e
 Yujie Wei. Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch-to-slip bonds in cell-adhesion molecules, Physical Review E,77, 031910 (2008), (details and download). doi:10.1103/PhysRevE.77.031910.  Also selected to appear in the Virtual Journal of Biological Physics Research, March 15, 2008, Volume 15, Issue 6 (Intermolecular Interactions) (vjbio.org).
Yujie Wei and Lallit Anand. On brittle-to-ductile transition and dilatancy in rocks: a micromechanical modeling, International Journal of solids and structures,volume 45, Issue 10, 15 May 2008, Pages 2785-2798, doi:10.1016/j.ijsolstr.2007.11.028,  doi:10.1016/j.ijsolstr.2007.11.028  (download).
Yujie Wei, Allan F. Bower, Huajian Gao. Enhanced strain-rate sensitivity in f.c.c. nanocrystals due to grain-boundary diffusion and sliding, Acta Materialia, Volume 56, Issue 8, May 2008, Pages 1741-1752.  (details and download) doi: 10.1016/j.actamat.2007.12.028.
Yujie Wei, Allan F. Bower, Huajian Gao. 2007, Recoverable creep deformation and transient local stress concentration due to heterogeneous grain-boundary diffusion and sliding in polycrystalline solids,      Journal of the Mechanics and Physics of Solids, Volume 56, Issue 4, April 2008, Pages 1460-1483. doi:10.1016/j.jmps.2007.08.007
Yujie Wei, Allan F. Bower, Huajian Gao. 2007, Recoverable creep deformation due to heterogeneous grain-boundary diffusion and sliding, Scripta Materialia, 57, 933-936, doi: 10.1016/j.scriptamat.2007.07.031 
Yujie Wei and Lallit Anand, A constitutive model for powder-processed nanocrystalline metals, Acta Materialia, 2007, 55, 921-931. doi:10.1016/j.actamat.2006.09.014
Yujie Wei, Cheng Su, and Lallit Anand. A computational study of the mechanical behavior of nanocrystalline fcc metals, Acta Materialia, 54, 3177-3190(2006), doi: 10.1016/j.actamat.2006.03.007
Yujie Wei and Lallit Anand. Grain-boundary sliding and separation in polycrystalline metals: application to nanocrystalline f.c.c. metals, Journal of Mechanics and Physics of Solids, 52, 2587-2616 (2004), doi: 10.1016/j.jmps.2004.04.006
C. Su, Y.J. Wei and L. Anand. An elastic-plastic interface constitutive model: application to adhesive joints, International Journal of Plasticity, 20, 2063-2081 (2004), doi:10.1016/j.ijplas.2003.12.008 .
Mengfen Xia,  Yujie Wei, Fujiu Ke, and Yilong Bai, Critical Sensitivity and Trans-scale Fluctuations in Catastrophe Rupture,  Pure and Applied Geophysics, 159, 2491-2509 (2002),  doi: 10.1007/s00024-002-8744-5.
Yujie Wei, Mengfen Xia, Fujiu Ke, Xiangchu Yin and Yilong Bai, Evolution Induced Catastrophe and its Predictability, Pure and Applied Geophysics, 157, 1945-1957 (2000), doi: 10.1007/PL00001069.
Y.L. Bai, Y.J. Wei, M.F. Xia and F.J. Ke,  Weibull Modulus of Diverse Strength due to Sample-Specificity, Theoretical and Applied Fracture Mechanics, 34, 211-216 (2000),  doi: 10.1016/S0167-8442(00)00037-9 .
Mengfen Xia, Fujiu Ke, Yujie Wei, Jie Bai and Yilong Bai, Evolution Induced Catastrophe in a Nonlinear Dynamics Model of Material Failure, Nonlinear Dynamics, 22, 205-224 (2000), doi: 10.1023/A:1008324329908.
Fujiu Ke, Yujie Wei, Mengfen Xia, Statistical mechanical properties in inhomogeneous brittle material, Chinese Science Abstracts, 7, 924-925 (2001). 
 

Accepted/submitted papers

Tanmay Bhandakkar, Yujie Wei, Huajian Gao. Transient stress concentration in the diffusional creep of a thin foil with heterogeneous grain-boundary diffusivity, submitted to Mathematics and Mechanics of Solids,  accepted (1/20/2008).
 Yujie Wei. A physical interpretation of the maximum receptor-ligand bond spacing to ensure cell adhesion in ligand-coated substrates, Langmuir, accepted (4/18/2008), (details and download)

 

Conferences

Yujie Wei, Tanmay,  Bhandakkar, Huajian Gao, Modeling on grain boundary diffusion in thin films and nanostructured materials, Gordon conference on Thin Film & Small Scale Mechanical Behavior, Colby College, Waterville ME 7/30-8/4, 2006

Yujie Wei and Lallit Anand, A finite element study of the mechanical behavior of nanocrystalline fcc metals, 15th U.S. National Congress on Theoretical and Applied Mechanics, University of Colorado at  Boulder, 6/26-6/30/2006.

L. Anand and Y.J. Wei, IUTAM Symposium on Mechanical Behavior and Micro-mechanics of Nanostructured Materials, 2005, Beijing, China.

Y.J. Wei, L. Anand and S. Suresh, Grain-Boundary Sliding and Separation in Nanocrystalline materials: a Continuum Model, Material Research Society Fall Meeting, 2003, Boston, U.S.A.

Y.L. Bai, H.L. Li, Y.J. Wei, Z.K. Jia, Key role of microdamage growth in time-dependent spall strength, in Shock compression of condensed matter, 2001: proceedings of the conference of the American Physical Society, 2001, Atlanta Georgia, U.S.A.

M.F. Xia,  Y.J. Wei, F.J. Ke, X.C. Yin and Y.L. Bai, Statistical Characteristics and Precursors of Evolution Induced Catastrophe, Int. Workshop on Solid Earth Simulation and ACES WG Meeting, Tokyo, Japan. Jan. 17-21, 2000.

Y.L. Bai,  Y.J. Wei, M.F. Xia and F.J. Ke, Sample-Specificity due to Mesoscopic Heterogeneity, Mesomechanics 2000,  Xi'an Jiaotong University, June, 13-16, 2000, Xi'an China. In Proceedings of the third international conference for mesomechanics, 2000 (Editor, G.C. Sih), 153-160, Tsinghua Univ. Press, Beijing China.

M.F. Xia,  Y.J. Wei, F.J. Ke, Y.L. Bai, Critical sensitivity and fluctuations in catastrophic  rupture, The 2nd ACES Workshop, Oct. 15-20, 2000, Tokyo, 43-45.

  

 

last modified: 01/22/2008

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