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Department of Mechanical Engineering

H. Jerry Qi

Assistant Professor
Mechanical Engineering Chair's Faculty Fellow
(303) 492-1270
QiH@Colorado.EDU
Personal Website
Curriculum Vitae

Education

  • Sc.D. Massachusetts Institute of Technology
  • Ph.D. Tsinghua University
  • M.S. Tsinghua University
  • B.S. Tsinghua University

Professional Recognition

  • Mechanical Engineering Chair's Faculty Fellow, 2008-2011
  • National Science Foundation Career Award, 2007
  • Woodward Outstanding Mechanical Engineering Faculty, 2006-2007
  • University of Colorado Graduate School Junior Faculty Development Award, 2005

Research Interests

  • Computational mechanics and finite deformation modeling of soft matter
  • Mechanics of polymers, including shape memory polymers and environmentally responsive hydrogels.
  • Mechanics of soft tissues, including human arterial tissues
  • Mechanics of cells, including human red blood cells, smooth muscle cells.
  • Imaging and nanomechanical testing using AFM.

The general focus area of Dr. Qi’s group is mechanics of materials, with special attention given to soft materials. The material systems of his interest include shape memory polymers, environmental responsive hydrogels, human arterial tissues, and cells.

While developing constitutive models for the large deformation behavior of these materials and implementing these models into finite elements are the major efforts, Dr. Qi’s group also routinely conducts material synthesis and mechanical experiments including uniaxial compression and tension, nanoindentation, and nanoscratching. In addition, Dr. Qi’ group recently acquired a state-of-the-art Atomic Force Microscope (AFM). His group uses this AFM to investigate structure-function relationship of polymers, tissues, and cells using high resolution AFM imaging and AFM nanoindetation.

Selected Publications

  • S. Lammers, P. Kao, H.J. Qi, K. Hunter, C. Lanning, J. Albietz, S. Hofmeister, R. Mecham, K.R. Stenmark, R. Shandas, 2008. Changes in the structure-function relationship of elastin and its impact on the proximal pulmonary arterial mechanics of hypertensive calves. Am J Physiol Heart Circ Physiol, in press. Available online since July 25, 2008.
  • S. Roy, H. J. Qi, 2008. Micro-mechanical Model for Elasticity of the Cell Cytoskeleton. Physical Review E, 77, 061916. Also in July 1, 2008 issue of Virtual Journal of Biological Physics Research.
  • T. D. Nguyen, H. J. Qi, F. Castro, K.N. Long, 2008. A thermoviscoelastic model for amorphous shape memory polymers: Incorporating structural and stress relaxation, J. Mech. Phys. Solids, 56: 2792-2814.
  • H.J. Qi, T.D. Nguyen, F. Castro, C. Yakacki, R. Shandas, 2008. Finite Deformation Thermo-Mechanical Behavior of Thermally Induced Shape Memory Polymers, J. Mech. Phys. Solids, 56:1730-1751.
  • K.K. Westbrook, H.J. Qi, 2008. Novel Actuator Designs Using Environmentally Responsive Hydrogels, J. Intelligent Material Sys. Struct., 19:597-607.
  • C.F. Martino, D. Belchenko, V. Ferguson, S. Nielsen-Preiss, H.J.Qi, 2008, The Effects of Pulsed Electromagnetic Fields on the Cellular Activity of SaOS-2 Cells, Bioelectromagnetics, 29:125-132.
  • M. Arslan, M. C. Boyce, H. J. Qi, and C. Ortiz, 2008. Constitutive Modeling of the Stress-Stretch Behavior of Two-Dimensional Triangulated Macromolecular Networks Containing Folded Domains. J. Applied Mechanics, 75:011020.
  • H.J. Qi, C. Ortiz, M. C. Boyce, 2006. Mechanics of biomacromolecular networks containing folded domains. J. Eng. Mat. Tech., 128:509-518.
  • Tai, K., Qi, H.J., Ortiz, C., 2005. Effect of mineral content on the nanoindentation properties and nanoscale deformation mechanisms of bovin tibial cortical bone. J. Materials Science: Materials in Medicine, 16:947-959.
  • Qi, H.J., C. Ortiz, Boyce, M.C., 2005. Protein forced unfolding and its effects on the finite deformation stress-strain behavior of biomacromolecular solids. Mater. Res. Soc. Symp. Proc. Vol. 874. L4.3.1
  • Bruet, B.J.F., H.J. Qi, M.C. Boyce, R. Panas, Tai, K., Ortiz, C., 2005. Nanoscale morphology and indentation of insividual nacre tablets from the gastropod mollusc Trochus Niloticus. J. Material Research. 20: 2400-2419.
  • H. J. Qi, B. F. J. Bruet, J. S. Palmer, C. Ortiz, and M. C. Boyce. 2004. Micromechanics and macromechanics of the tensile deformation of nacre, in Mechanics of Biological Tissues, G. Holzapfel and R. W. Ogden, eds. Springer Verlag, Graz, Austria, 2005.
  • H.J. Qi, M.C. Boyce, 2005. Stress-strain behavior of thermoplastic polyurethane, Mech. Mater., 36:817-839.
  • H.J. Qi, M.C. Boyce, Constitutive model for stretch-induced softening of stress strain behavior of elastomeric material, J. Mech. Phys. Solids, November, 2004, 52:2187-2205.
  • H.J. Qi, Mechanics of Abrasive Wear of Elastomeric Materials, Ph.D. thesis, Massachusetts Institute of Technology, August, 2003.
  • H.J. Qi, K.B.K. Teo, K.K.S. Lau, M.C. Boyce, W.I. Milne, J. Robertson, K.K. Gleason, Determination of mechanical properties of carbon nanotubes and vertically aligned carbon nanotube forests using nanoindentation, J. Mech. Phys. Solids, 51, 2003, 2213-2237.
  • H.J. Qi, K. Joyce, M.C. Boyce, Relationship between durometer hardness and the stress-strain behavior of elastomeric and elastomeric-like materials, Rubber Chem. Tech., 76, 2003, 419-435