Journal Papers (published)

1.      Y.F. Gao, Z. Suo^*, "Domain dynamics in a ferroelastic epilayer on a paraelastic substrate." Trans. of ASME, Journal of Applied Mechanics 69, 419-424, 2002 [PDF] [DOI].

2.      Y.F. Gao, W. Lu, Z. Suo^*, "A mesophase transition in a binary monolayer on a solid surface." Acta Materialia 50, 2297-2308, 2002 [PDF] [DOI].

3.      Y.F. Gao^*, Z. Suo, "The orientation of the self-assembled monolayer stripes on a crystalline solid." Journal of the Mechanics and Physics of Solids 51, 147-167, 2003 [PDF] [DOI].

4.      Y.F. Gao, Z. Suo^*, "Guided self-assembly of molecular dipoles on a substrate surface." Journal of Applied Physics 93, 4276-4282, 2003 [PDF] [DOI].

·         This article also appeared in Virtual Journal of Nanoscale Science & Technology 7, issue 14, 2003.

5.      Y.F. Gao^*, "Passing stiffness anisotropy in multilayers and its effects on nanoscale surface self-organization." International Journal of Solids and Structures 40, 6429-6444, 2003 [PDF][Erratum] [DOI].

6.      Z. Suo^*, Y.F. Gao, G. Scoles, "Nanoscale domain stability in organic monolayers on metals." Trans. of ASME, Journal of Applied Mechanics, 71, 24-31, 2004 [PDF] [DOI].

7.      Y.F. Gao^*, A.F. Bower, "A simple technique for avoiding convergence problems in finite element simulations of crack nucleation and growth on cohesive interfaces." Modelling and Simulation in Materials Science and Engineering 12, 453-463, 2004 [PDF] [DOI].

·         Codes developed in this paper are available for download [Help File] [Fortran Source File] [Abaqus Input File].

8.      Y.F. Gao^*, A.F. Bower, K.-S. Kim, L.C. Lev, Y.T. Cheng, "The behavior of an elastic-perfectly plastic sinusoidal surface under contact loading." Wear, 261, 145-154, 2006 [PDF] [DOI].

9.      Y.F. Gao, A.F. Bower^*, "Elastic-plastic contact of a rough surface with Weierstrass profile." Proceeding of Royal Society London, Series A, 462, 319-348, 2006 [PDF][Electronic Appendix] [DOI].

10.      Y.F. Gao^*, B.N. Lucas, J.C. Hay, W.C. Oliver, G.M. Pharr, "Nanoscale incipient asperity sliding and interface micro-slip assessed by the measurement of tangential contact stiffness." Scripta Materialia, 55, 653-656, 2006 [PDF][DOI].

11.      Y.F. Gao^*, "An implicit finite element method for simulating inhomogeneous deformation and shear bands of amorphous alloys based on the free-volume model." Modelling and Simulation in Materials Science and Engineering, 14, 1329-1345, 2006 [PDF] [DOI].

12.      C. Fan^*, P.K. Liaw, T.W. Wilson, H. Choo, Y.F. Gao, C.T. Liu, Th. Proffen, J.W. Richardson, "Pair distribution function study and mechanical behavior of as-cast and structurally relaxed Zr-based bulk metallic glasses." Applied Physics Letters, 89, 231920, 2006 [PDF] [DOI].

13.      H.H. Yu, P. Shrotriya, Y.F. Gao, K.-S. Kim^*, "Micro-plasticity of surface steps under adhesive contact: Part I, surface yielding controlled by single-dislocation nucleation." Journal of the Mechanics and Physics of Solids, 55, 489-516, 2007 [PDF] [DOI].

14.      C. Fan^*, Y.F. Gao, H.Q. Li, H. Choo, P.K. Liaw, A. Inoue, C.T. Liu, "Mechanical behavior of a Zr-based bulk metallic glass and its composite at cryogenic temperatures." Journal of Materials Research, 22, 445-452, 2007.

15.      Y.F. Gao^*, B. Yang, T.G. Nieh, "Thermomechanical instability analysis of inhomogeneous deformation in amorphous alloys." Acta Materialia, 55, 2319-2327, 2007 [PDF] [DOI].

16.      S.M. Xia, Y.F. Gao^*, A.F. Bower, L.C. Lev, Y.-T. Cheng, "Delamination mechanism maps for a strong elastic coating on an elastic-plastic substrate subjected to contact loading." International Journal of Solids and Structures, 44, 3685-3699, 2007 [PDF] [DOI].

17.      Y.F. Gao^*, G.M. Pharr, "Multidimensional contact moduli of elastically anisotropic solids." Scripta Materialia, 57, 13-16, 2007 [PDF] [DOI].

18.      F.X. Liu^*, P.K. Liaw, W.H. Jiang, C.L. Chiang, Y.F. Gao, Y.F. Guan, J.P. Chu, P.D. Rack, "Fatigue-resistance enhancements by glass-forming metallic films." Materials Science and Engineering A, 468-470, pp. 246-252, 2007 [PDF] [DOI].

19.      Y.F. Gao^*, H.T. Xu, W.C. Oliver, G.M. Pharr, "Effective elastic modulus of film-on-substrate systems under normal and tangential contact." Journal of the Mechanics and Physics of Solids, 56, 402-416, 2008 [PDF] [DOI].

20.      H. Bei, Y.F. Gao^*, S. Shim, E.P. George, G.M. Pharr, "Strength differences arising from homogeneous versus heterogeneous dislocation nucleation." Physical Review B, 77, 060103(R), February 29, 2008 [PDF] [LINK] [DOI].

21.      Y.F. Gao^*, J. Lou, "Dislocation nucleation and pileup under a wedge contact at nanoscale." Journal of Nanomaterials, special issue in: Nanomechanics and Nanostructured Multifunctional Materials: Experiments, Theories and Simulations (edited by J. Wang and J. Lou), Article ID 380961, 2008 [PDF] [LINK] [DOI].

22.      Y.F. Gao^*, H.T. Xu, W.C. Oliver, G.M. Pharr, "A comparison of Coulomb friction and friction stress models based on multidimensional nanocontact experiments." Trans. of ASME, Journal of Applied Mechanics, 75, 034504, 2008 [PDF] [LINK] [DOI].

23.      F.X. Liu, Y.F. Gao^*, P.K. Liaw, "Rate-dependent deformation behavior of Zr-based metallic-glass coatings examined by nanoindentation." Metallurgical and Materials Transactions A, 39, 1862-1867, 2008 [PDF] [DOI].

24.      Y.F. Gao^*, H.H. Yu, K.-S. Kim, "Micro-plasticity of surface steps under adhesive contact: Part II - Multiple-dislocation mediated contact loading." Journal of the Mechanics and Physics of Solids, 56, 2759-2772, 2008 [PDF] [DOI].

25.      R. Barabash^*, Y.F. Gao, Y. Sun, S. Lee, H. Choo, P.K. Liaw, D.W. Brown, G.E. Ice, "Neutron and x-ray diffraction studies and cohesive interface model of the fatigue crack deformation behavior." Philosophical Magazine Letters, 88(8), 553-565, 2008 [PDF] [DOI].

26.      Y.F. Gao^*, J.Y. Meng, A. Goyal, G.M. Stocks, "Spatial ordering and anisotropy in surface stress domains and nanostructural evolution." JOM, vol. 60, no. 9, pp. 54-58, September 2008 [LINK] [DOI].

27.      T.L. Li, J.H. Lee, Y.F. Gao^*, G.M. Pharr, M. Huang, T.Y. Tsui, "Geometric effects on dislocation nucleation in strained electronics." Applied Physics Letters, 94, 171905, 2009 [PDF] [DOI] [LINK"].

Journal Papers (accepted and in press)

28.      T.L. Li, J.H. Lee, Y.F. Gao^*, "An approximate formulation of the effective indentation modulus of elastically anisotropic film-on-substrate systems." International Journal of Applied Mechanics, special issue in Nanomechanics (eidted by P. Sharma), accepted in May 2009.

29.      F.X. Liu^*, F.Q. Yang, Y.F. Gao, W.H. Jiang, Y.F. Guan, P.D. Rack, O. Sergic, P.K. Liaw "Micro-scratch study of a magnetron sputtered Zr-based metallic-glass film." Surface & Coatings Technology, accepted in May 2009.

Book Chapters

1.      Y.F. Gao, A.F. Bower, "Rough surface plasticity and adhesion across length scales." In: Nanomechanics of Materials and Structures, edited by T.-J. Chuang, P.M. Anderson, M.-K. Wu and S. Hsieh, pp. 277-287, Springer, the Netherlands, 2006 [PDF].

Conference Publications

1.      Y.F. Gao, "On the manipulation of nanoscale self-assembly by elastic field." Mat. Res. Soc. Symp. Proc. Vol. 794, T9.3, 2004 [PDF].

2.      Y.F. Gao, A.F. Bower, K.-S. Kim, "Some issues of rough surface contact plasticity at micro- and nano-scale." Mat. Res. Soc. Symp. Proc. Vol. 841, R.7.3, 2005 [PDF].

3.      Y.F. Gao, "A micromechanical dislocation model of rough surface contact plasticity." Proceeding of World Tribology Conference, Washington DC, 2005 [PDF].

4.      F.X. Liu, C.L. Chiang, J.P. Chu, Y.F. Gao, P.K. Liaw, "Effects of glass-forming metallic film on the fatigue behavior of C-2000 Ni-based alloy." Mat. Res. Soc. Symp. Proc. Vol. 903E, 0903-Z14-13.1, 2006 [PDF].

Other Publications

1.      P.K. Liaw, W.H. Jiang, G.J. Fan, H. Choo, and Y.F. Gao, (eds.), special issue of Symposium on Bulk Metallic Glasses IV (TMS Annual Spring Meeting, Orlando, FL, 2/26~3/1/2007), Metallurgical and Materials Transactions A, Vol. 39, No. 8, August 2008 [DOI].