1995-2000
1) H. Gao, ``Mass-Conserved Morphological Evolution of Hypocycloid Cavities: A Model of Diffusive Crack Initiation With No Associated Energy Barrier,'' 1995, Proceedings of the Royal Society of London, Vol. A448, pp. 465-483; Link to PDF file(1655K) Vol. A450, pp. 732-734. Link to PDF file(225K)
2) J. Lee and H. Gao, ``A Hybrid Finite Element Analysis of Interface Cracks,'' 1995, International Journal for Numerical Methods in Engineering, Vol. 38, pp. 2465-2482.
3) N. Y. Chien, H. Gao, G. Herrmann and D. M. Barnett, ``Diffusive Surface Instabilities Induced by Electromechanical Loading,'' 1996, Proceedings of the Royal Society of London, Vol. A452, pp. 527-541. Link to PDF file(1654K)
4) W. H. Mueller, H. Gao, C.-h. Chiu and S. Schmauder, ``A Semi-Infinite Crack in Front of a Circular, Thermally Mismatched Heterogeneity,'' 1996, International Journal of Solids and Structures, Vol. 33, pp. 731-746. Link to PDF file(755K)
5) H. Gao, ``A Theory of Local Limiting Speed in Dynamic Fracture,'' 1996, Journal of the Mechanics and Physics of Solids, Vol. 44, pp. 1453-1474. Link to PDF file(1053K)
6) H. Gao and D. M. Barnett, ``An Invariance Property of Local Energy Release Rates in a Strip Saturation Model of Piezoelectric Fracture,'' 1996, International Journal of Fracture, Vol. 79, R25-R29.
7) H. Gao, T.-Y. Zhang and P. Tong, ``Local and Global Energy Release Rates for an Electrically Yielded Crack in a Piezoelectric Ceramic,'' 1997, Journal of the Mechanics and Physics of Solids, Vol. 45, pp. 491-510. Link to PDF file(717K)
8) P. Muellner, H. Gao and C. S. Ozkan, ``A Twinned Wedge in a Si-Ge Epitaxial Film: Twofold S9 Twinning,'' 1997, Philosophical Magzine A, Vol. 75, pp. 925-938.
9) C. S. Ozkan, W.D. Nix and H. Gao, ``Strain Relaxation and Defect Formation in Heteroepitaxial Si1-xGex Films Via Surface Roughening Induced by Controlled Annealing Experiments,'' 1997, Applied Physics Letters, Vol. 70, pp. 2247-2249. Link to PDF file(679K)
10) C. C. Fulton and H. Gao, ``Electrical Nonlinearity in Fracture of Piezoelectric Ceramics,'' 1997, Applied Mechanics Review, Vol. 50, pp. S56-S63.
11) Y. Du, P. Segall, H. Gao, `` Quasi-Static Dislocations in Three Dimensional Inhomogeneous Media,'' 1997, Geophys. Res. Letters. Vol. 24, pp. 2347-2350
12) H. Gao, ``Elastic Waves in a Hyperelastic Solid Near Its Plane Strain Equibiaxial Cohesive Limit,'' 1997, Philosophical Magazine Letters, Vol. 76, pp. 307-314. Link to PDF file(146K)
13) H. Gao, W.H. Mueller and G. Kemmer, ``Mixed Mode Fracture in Epicycloid Specimens I. Thermal Inclusions,'' 1998, International Journal of Solids and Structures, Vol. 35, pp. 1617-1633. Link to PDF file(697K)
14) W.H. Mueller and H. Gao, ``Mixed Mode Fracture in Epicycloid Specimens II. Point Force Loading,'' 1998, International Journal of Solids and Structures, Vol. 35, pp. 205-217. Link to PDF file(447K)
15) H. Gao and P. Klein, ``Numerical Simulation of Crack Growth in an Isotropic Solid With Randomized Internal Cohesive Bonds,'' 1998, Journal of the Mechanics and Physics of Solids, Vol. 46, pp. 187-218. Link to PDF file(1466K)
16) W. D. Nix and H. Gao, ``Indentation Size Effects in Crystalline Materials: A Law for Strain Gradient Plasticity,'' 1998, Journal of the Mechanics and Physics of Solids, Vol. 46, pp. 411-425. Link to PDF file(613K)
17) A. B. Movchan, H. Gao and J. R. Willis, ``Perturbation Studies of Plane Cracks,'' 1998, International Journal of Solids and Structures, Vol. 35, pp. 3419-3453. Link to PDF file(1154K)
18) F. F. Abraham and H. Gao, ``Anamalous Brittle-Ductile Fracture Behaviors in FCC Crystals,'' 1998, Philosophical Magazine Letters, Vol. 78, pp. 307-312. Link to PDF file(125K)
19) F. F. Abraham, D. Brodbeck, W. E. Rudge, J. Q. Broughton, D. Schneider, B. Land, D. Lifka, J. Gerner, M. Rosenkrantz, J. Skovira and H. Gao, ``Ab Initio Dynamics of Rapid Fracture,'' 1998, Modeling and Simulation in Materials Science and Engineering, Vol. 6, pp. 639-670. Link to PDF file(3000K)
20) W.D. Nix and H. Gao, ``An Atomistic Interpretation of Interface Stress,'' 1998, Scripta Materialia, Vol. 39, pp. 1653-1661. Link to PDF file(188K)
21) P. Klein and H. Gao ``Crack Nucleation and Growth as Strain Localization in a Virtual-Bond Continuum,'' 1998, Engineering Fracture Mechanics, Vol. 61, pp. 21-48. Link to PDF file(4700K)
22) P. Gumbsch and H. Gao, ``Dislocations Faster Than the Speed of Sound,'' 1999, Science, Vol. 283, No. 5404, pp. 965-968. Link to PDF file
23) H. Gao, C. S. Ozkan, W. D. Nix, J. A. Zimmerman and L. B. Freund, ``Atomistic Models of Dislocation Formation at Crystal Surface Ledges in Si1-xGex /Si(100) Heteroepitaxial Thin Films,'' 1999, Philosophical Magzine A, Vol. 79, pp. 349-370. Link to PDF file(1692K)
24) H. Gao and W.D. Nix, "Surface Roughening of Heteroepitaxial Thin Films," 1999, Annual Review of Materials Science, Vol. 29, pp. 173-209. Link to PDF file
25) H. Gao, Y. Huang, W.D. Nix and J.W. Hutchinson, ``Mechanism-Based Strain Gradient Plasticity - I. Theory,'' 1999, Journal of the Mechanics and Physics of Solids, Vol. 47, pp. 1239-1263. Link to PDF file(388K)
26) W.H. Mueller, W. Littmann and H. Gao, ``Mixed Mode Fracture in Epicycloid Specimens III. Dislocations, '' 1999, International Journal of Solids and Structures, Vol. 36, pp. 3339-3348. Link to PDF file(514K)
27) H. Gao, Y. Huang, P. Gumbsch and A.J. Rosakis, ``On Radiation-Free Transonic Motion of Cracks and Dislocations,'' 1999, Journal of the Mechanics and Physics of Solids, Vol. 47, pp. 1941-1961.Link to PDF file(201K)
28) Z. Li, H. Zhao and H. Gao, "A Numerical Study of Electro-Migration Voiding by Evolving Level Set Functions on a Fixed Cartesian Grid," 1999, Journal of Computational Physics, Vol. 152, pp. 281-304. Link to PDF file(201K)
29) H. Gao, L. Zhang, W. D. Nix, C. V. Thompson, E. Arzt, "Crack-Like Grain Boundary Diffusion Wedges in Thin Metal Films", 1999, Acta Materialia, Vol. 47, pp. 2865-2878. Link to PDF file(265K)
30) C. S. Ozkan, W.D. Nix and H. Gao, ``Stress Driven Surface Evolution in Heteroepitaxial Thin Films: Anisotropy of 2-D Roughening Mode,'' 1999, Journal of Materials Research, Vol. 14, pp. 3247-3256. Link to PDF file(905K)
31) H. Gao, Y. Huang and W.D. Nix, ``Modeling Plasticity at the Micron Scale,'' 1999, Naturwissenschaften, Vol. 86, pp. 507-515. Link to PDF file(160K)
32) C. C. Fulton and H. Gao, ``Electromechanical Fracture in Piezoelectric Ceramics,'' 1999, International Journal of Fracture, Vol. 98, pp. L17-L22.
33) P. Gumbsch and H. Gao, `` Driving force and nucleation of supersonic dislocations,'' 1999, Journal of Computer-Aided Materials Design, Vol. 6, pp. 137-144. Link to PDF file(112K)
34) Y. Huang, H. Gao, W.D. Nix and J.W. Hutchinson, ``Mechanism-Based Strain Gradient Plasticity - II. Analysis,'' 2000, Journal of the Mechanics and Physics of Solids, Vol. 48, pp. 99-128. Link to PDF file(306K)
35) T. Bai, D.D. Pollard and H. Gao, ``Explanation for Fracture Spacing in Layered Materials,'' 2000, Nature, Vol. 403, No. 6771, pp. 753-756. Link to PDF file(1049K)
36) J.A. Zimmerman, H. Gao and F.F. Abraham, ``Generalized Stacking Fault Energies for Embedded Atom FCC Metals.'' 2000, Modelling and Simulation in Materials Science and Engineering, Vol. 8, pp. 103-115. Link to PDF file(240K)
37) F. F. Abraham and H. Gao, ``How Fast Can Cracks Propagate?'' 2000, Physical Review Letters, Vol. 84, pp. 3113-3116. Link to PDF file(144K)
38) T. Bai, D.D. Pollard and H. Gao, ``Spacing of Edge Fractures in Layered Materials,'' 2000, International Journal of Fracture, Vol. 103, pp. 373-395.
39) M.X. Shi, Y. Huang, H. Gao and K.C. Hwang, ``Non-Existence of Separable Crack Tip Field in Mechanism-Based Strain Gradient Plasticity,'' 2000, International Journal of Solids and Structures, Vol. 37, pp. 5995-6010. Link to PDF file(197K)
40) Y. Huang, Z. Xue, H. Gao, W.D. Nix and Z. C. Xia, ``A Study of Micro-Indentation Hardness Tests by Mechanism-Based Strain Gradient Plasticity,'' 2000, Journal of Materials Research, Vol. 15, pp. 1786-1796. Link to PDF file(207K)
41) J. Lore, H. Gao, and A. Aydin, "Viscoelastic Thermal Stress in Cooling Basalt Flows," 2000, Journal of Geophysical Research, Vol. 105, B10, pp. 23695-23709.
42) Y. A. Antipov and H. Gao, ``Exact Solution of Integro-Differential Equations of Diffusion Along a Grain Boundary,'' 2000, Quarterly Journal of Mechanics and Applied Mathematcs, Vol. 53, pp. 645-674.
43) M. Lane, R. H. Dauskardt, A.Vainchtein and H. Gao, ``Plasticity contributions to interface adhesion in thin-film interconnect structures,'' 2000, Journal of Materials Research, Vol. 15, pp. 2758-2769. Link to PDF file(1065K)
44) P.A. Klein and H. Gao, "Study of Crack Dynamics Using the Virtual Internal Bond Method," in "Multiscale Deformation and Fracture in Materials and Structures-- The James R. Rice 60th Anniversary Volume", eds. T.-J. Chuang and J. W. Rudnicki, pp. 275-309, Kluwer Academic Publishers, Dordrecht, The Netherlands, December 2000. Link to PDF file(669)
1) C.-h. Chiu and H. Gao, ``A Numerical Study of Stress Controlled Surface Diffusion During Epitaxial Film Growth,'' 1995, Materials Research Symposium Proceedings, Vol. 356, pp. 33-44.
2) J. Zimmerman and H. Gao, ``Molecular Dynamics Simulation of Dislocation Formation at Crystal Surface Ledges Under Compressive Strain'', 1996, Materials Research Symposium Proceedings, Vol. 399, pp. 401-406.
3) C.S. Ozkan, W.D. Nix and H. Gao, ``Strain Relaxation in Heteroepitaxial Si1-xGex Films via Surface Roughening Processes,'' 1996, Materials Research Symposium Proceedings, Vol. 399, pp. 407-412.
4) C.S. Ozkan, W.D. Nix and H. Gao, ``Anisotropic Behavior of Surface Roughening in Lattice Mismatched Heteroepitaxial Thin Films,'' 1996, Materials Research Symposium Proceedings, Vol. 436, pp. 487-492.
5) C.S. Ozkan, W.D. Nix and H. Gao, ``Effect of Stresses on Defect Nucleation in Si1-xGex /Si Heteroepitaxial Systems,'' 1997, Materials Research Symposium Proceedings, Vol. 442, pp. 373-378.
6) C.S. Ozkan, W.D. Nix and H. Gao, ``Studies of morphological instability and dislocation formation in heteroepitaxial Si1-xGex /Si thin films via controlled annealing experiments,'' 1997, Materials Research Symposium Proceedings, Vol. 440, pp. 323-328.
7) H. Gao, C. C. Fulton, T.-Y. Zhang, P. Tong and D. M. Barnett, ``Multiscale Energy Release Rates in Fracture of Piezoelectric Ceramics,'' 1997, in Smart Materials and Structures, Proceedings SPIE (eds. V. V. Varadan and J. Chandra), Vol. 3039, pp. 228-233.
8) H. Gao, ``Hyperelastic Modeling of Dynamic Crack Tip Instabilities,'' 1997, Proceedings of the Third International Conference on Fracture and Strength of Solids, Key Engineering Materials, Vol. 145-149, Part I, pp. 291-300.
9) C. C. Fulton and H. Gao, ``Nonlinear Fracture Mechanics of Piezoelectric Ceramics,'' 1998, in Smart Materials and Structures, Proceedings SPIE (eds. V. V. Varadan and J. Chandra), Vol. 3323, pp. 119-127.
10) C.S. Ozkan, W.D. Nix and H. Gao, ``In-situ TEM observations of surface roughening and defect formation in lattice mismatched heteroepitaxial thin films," 1998, Materials Research Symposium Proceedings, Vol. 646, pp. 291-298.
11) C. C. Fulton and H. Gao, ``Effects of Microstructure on Piezoelectric Fracture,'' 1999, Applied Mechanics in the Americas, eds. D. Pamplona, C. Steele, H.I. Weber, P.B. Gonsalves, I. Jasiuk, L. Bevilacqua, Vol. 7, pp. 635-638.
12) H. Gao, Y. Huang, W.D. Nix and J.W. Hutchinson, ``A Multiscale Framework for the Mechanism-based Strain Gradient Plasticity,'' 1999, Applied Mechanics in the Americas, eds. D. Pamplona, C. Steele, H.I. Weber, P.B. Gonsalves, I. Jasiuk, L. Bevilacqua, Vol. 7, pp. 855-858.
13) Y. Huang, H. Gao, W.D. Nix and J.W. Hutchinson, ``Dislocation Models for the Strain Gradient Plasticity,'' 1999, Applied Mechanics in the Americas, eds. D. Pamplona, C. Steele, H.I. Weber, P.B. Gonsalves, I. Jasiuk, L. Bevilacqua, Vol. 7, pp. 959-962.
14) K. Langer and H. Gao, ``Scale Effects in Dynamic Brittle Fracture,'' 1999, Applied Mechanics in the Americas, eds. D. Pamplona, C. Steele, H.I. Weber, P.B. Gonsalves, I. Jasiuk, L. Bevilacqua, Vol. 7, pp. 1055-1058.
15) Y. Huang, H. Gao and K.C. Hwang, ``Strain Gradient Plasticity at the Micron Scale,'' 1999, in Progress in Mechanical Behavior of Materials, Proceedings of ICM'8, eds. F. Ellyin and J.W. Provan, Victorial, British Columbia, Canada, May 16-21, 1999, Fleming Printing Ltd., Vol. III, pp. 1051-1056.
1) H. Gao and C.-h. Chiu, ``A Few General Remarks on the Initiation of Diffusive Cusp Cracks in Stressed Solids,'' 1995, Symposium on Micromechanical Modelling and Damage Characterization of Advanced Solids, Ed. S. A. Meguid, AMD-Vol. 199, MD-Vol. 55, pp. 67-72.
2) H. Gao and D. M. Barnett, ``Surface and Defect Morphologies in Anisotropic Elastic and Piezoelectric Solids,'' 1996, Proceedings of the Fourteenth Symposium on Energy Engineering Sciences, pp. 35-42.
3) H. Gao and D. M. Barnett, ``Electromechanical
Fracture in Piezoelectric Ceramics,'' 1999, Proceedings of the Seventeenth
Symposium on Energy Engineering Sciences, pp. 34-41.
1) H. Gao, L. B. Freund and W. D. Nix, ``Mechanisms of Dislocation Formation at Crystal Surface Ledges due to Compressive Strain,'' 1995, Division of Applied Mechanics, Stanford University.
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