Chenyu Wei 

Theoretical study, Modeling, and Simulation  on Nanoscaled Materials and Biosystems.

B.S. Physics, University of Science and Technology of China (1993)

Ph.D. Physics, University of Pennsylvania (1999)

Address: RM120, MS 229-1, Moffett Field, CA 94035

Phone: +1.650.604.0536

email: chenyu.wei@nasa.gov

Current Projects

Nanoscaled materials such as nanotubes, nanowires, nanoclusters, nanocomposites, and biological systems present unique properties on structures, mechanics, thermodynamics, and transports. The understanding of nanoscaled materials at atomic level is crucial for many phenomena. I currently work on following subjects, through theoretical analysis, modeling and simulation methods (such as molecular dynamics, tight binding and density functional theory):

Positions Held

Selected Publications 

  1. "Adsorption of an alkane mixture on carbon nanotubes: Selectivity and kinetics", C. Wei, Phys. Rev. B in press (2009).

  2. "Permeation of Membrane by Ribose and Its Diastereomers", C. Wei and A. Pohorille, J. Am. Chem. Soc. in press (2009).

  3. "Structural Phase Transition of Alkane Molecules in Nanotube Composites", C. Wei, Phys. Rev. B 76, 134104 (2007).

  4. "Radius and Chirality Dependent Conformation of Polymer Molecule at Nanotube Interface", C. Wei, Nano Lett 6, 1627 (2006).

  5. "Adhesion and Reinforcement in Carbon Nanotube Polymer Composite", C. Wei, Appl. Phys. Lett. 88, 093108 (2006).

  6. "Mesoscopic Model for Dynamics Simulations of Carbon Nanotubes and Nanocomposites", L. V. Zhigilei, C. Wei, and D. Srivastava, Phys. Rev. B 71, 165417 (2005).

  7. "Molecular Transport and Fluidics in Carbon Nanotube", C. Wei, and D. Srivastava, Int. J. NanoSci. 4, 363 (2005).

  8. "Structural Ordering in Nanotube Polymer Composites", C. Wei, D. Srivastava, and K. Cho, Nano Lett. 4, 1949, (2004).

  9. "Nanomechanics of Carbon Nanofibers: Structural and Elastic Properties", C. Wei and D. Srivastava, Appl. Phys. Lett. 85, 2208, (2004).

  10. "Physical and Electronic Isolation of Carbon Nanotube Conductors", J. O'Keeffe, K. Cho, M. P. Anantram, N. Mingo, C. Wei, and R. Dutton, Eletron Device Letters, IEEE, to appear (2004). (preprint)

  11. "Theory of Transport of Long Polymer Molecules through Carbon Nanotube Channels", C. Wei and D. Srivastava, Phys. Rev. Lett. 91, 235901, (2003).

  12. "Computational Nanomechanics of Carbon Nanotubes and Composites", D. Srivastava, C. Wei, and K. Cho, Appl. Mech. Rev. 56, 215 (2003).

  13. "Tensile Strength of Carbon Nanotubes under Realistic Temperature and Strain Rate", C. Wei, K. Cho, and D. Srivastava, Phys. Rev. B 67, 115407 (2003).

  14. "Tensile Yielding of Multiwall Carbon Nanotubes", C. Wei, K. Cho, and D. Srivastava, Appl. Phys. Lett. 82, 2512 (2003).

  15. "Thermal Expansion and Diffusion Coefficients of Carbon Nanotube-Polymer Composites", C. Wei, D. Srivastava, and K. Cho, Nano Lett. 2, 647 (2002).

  16. "Molecular Dynamics Study of Temperature Dependent Plastic Collapse of Carbon Nanotubes under Axial Compression", C. Wei, D. Srivastava, and K. Cho, " Comp. Modeling in Engr. & Sci. 3, 255 (2002).

  17. "Band-structure Modulation for Carbon Nanotubes in a Uniform Electric Field", J. O'Keeffe, C. Wei and K. Cho, Appl. Phys. Lett. 80, 676 (2002).

  18. "Carbon Nanotube Chemical and Mechanical Sensors", S. Peng, J. O'Keeffe, C. Wei, K.J. Cho, J. Kong, R. Chen, N. Franklin, and H. Dai, 3rd International Workshop on Structural Health Monitoring Conference Proceeding (2001).

  19.  "Temperature and Strain-rate Dependent Plastic Deformation of Carbon Nanotube", C. Wei, K. Cho, and D. Srivastava, MRS Symposium Proceedings, 677, AA6.5 (2001).

Recent Talks

  1.  "Computer Simulations of Macroscopic Properties of Carbon-Nanotube Polymer Composites", present by Deepak Srivastava, Society for the Advancement of Material and Process Engineering Symposium, Long Beach, CA, May 11-15 2003. (Invited)

  2. "Nanomechanics of Nanotubes and Nanotube-Polymer", International Conference on Computational Engineering & Sciences, Reno, NA, 31 July-2 August 2002. (Invited)

  3. "Nanomechanics of Nanotubes and Nanotube-Polymer", Mechanical Engineering Department Seminar, Stanford University, CA, March, 2002. (Seminar)

  4. "Load Transfer and Work Hardening Process of CNT-Polymer", Material Research Society April Meeting, San Francisco, CA, 2002.

  5. "Nanomechanics of Carbon Nanotube and its Polymer Composites", M25.001, American Physical Society March Meeting, Indianapolis, IN, 2002. (Invited)

  6. "The Chemical Bonding between CNT and Polymer Matrix and the Load Transfer", Material Research Society April Meeting, San Francisco, CA, 2001.

  7. "The Mechanical Properties of Polymer-CNT Composites", V20.007, American Physical Society March Meeting, Seattle, WA, 2001.

  8. "The Mechanics of Carbon Nanotube", Mardi Gras Conference on Multiscale Simualtion, Theoretical, and Experimental Approaches to Deformation, Friction, Fatigue and Fracture, Baton Rouge, LA, Feb 22- Feb 24, 2001. (Invited)