Xiqiao FENG

Xiqiao Feng, Professor

Scientific Profile

Professor Feng’s research group is currently studying the mechanics of biological materials, with the aims to understand their structure-composition-property-function relationships at different length scales and to search for inspirations from the splendid living world in order to solve various challenging problems of technologically importance. This group has been paying increasing attention to the mechanics of cells, in particular to their complicated and adaptive responses to various interactions with the environment. In addition, we are also interested in micromechanics and nanomechanics, especially some multidisciplinary phenomena observed in micro/nano-sized materials and devices.

Research Interests

Biomechanics and biomimetics of biomaterials, Cell mechanics, Micromechanics and nanomechanics, Damage and fracture mechanics

Recent Publications, Presentations and Events

(1)  Biomechanics and biomimetics of biomaterials
[1]    B. W. Li, H. P. Zhao, X. Q. Feng, W. W. Guo, and S. C. Shan, Experimental study on the mechanical properties of the horn sheaths from cattle. Journal of Experimental Biology, 2010， Vol. 213, No. 3, pp. 479–486. [ PDF ]
[2]    X. Q. Feng, M. Sun, About the special topic of mechanics and biomimetics of biomaterials and animal locomotion. Acta Mechanica Sinica, 2010, No. 26, pp. 3–4. [ PDF ]
[3]    H. P. Zhao, J. T. Zhu, X. Q. Feng, Z. Y. Fu, Y. Shao, R. T. Ma, Plasma surface graft of acrylic acid and biodegradation of poly(butylene succinate) films. Thin Solid Films, 2008, Vol. 516, No. 16, pp. 5660–5664.
[4]    F. Shi, J. Niu, J. L. Liu, Z. Q. Wang, X. Q. Feng and X. Zhang, Towards understanding why superhydrophobic coating is needed by water striders, Advanced Materials, 2007, Vol. 19, No. 17, pp. 2257–2261.
[5]    H. P. Zhao and X. Q. Feng, Variability in mechanical properties of Bombyx mori silk, Materials Science and Engineering C - Biomimetic and Supramolecular Systems, 2007, Vol. 27, No. 4, pp. 675–683.
[6]    H. P. Zhao, X. Q. Feng and H. J. Gao, Ultrasonic technique for extracting nanofibers from nature, Applied Physics Letters, 2007, Vol. 90, No. 7, pp. 073112(1–2).
[7]    H. P. Zhao, X. Q. Feng, W. Z. Cui and F. Z. Zou, Mechanical properties of silkworm cocoon pelades, Engineering Fracture Mechanics, 2007, Vol. 74, No. 12, pp. 1953–1962.
[8]    J. L. Liu, X. Q. Feng and G. F. Wang, Buoyant force and sinking conditions of a hydrophobic thin rod floating on water, Physical Review E, 2007, Vol. 76, No. 6, pp. 066103(1–9).
[9]    J. L. Liu, X. Q. Feng, G. F. Wang and S. W. Yu, Mechanisms of superhydrophobicity on hydrophilic substrates, Journal of Physics: Condensed Matters, 2007, Vol. 19, No. 35, pp. 356002(1–12).
[10] J. L. Liu, X. Q. Feng, R. Xia and H. P. Zhao, Hierarchical capillary adhesion of microcantilevers or hairs, Journal of Physics D: Applied Physics, 2007, Vol. 40, No. 18, pp. 5564–5570.
[11] X. Q. Feng, X. F. Gao, Z. N. Wu, L. Jiang and Q. S. Zheng, Superior water repellence ability of water strider’s legs with hierarchical structures: experiments and analysis, Langmuir, 2007, Vol. 23, No. 9, pp. 4892–4896.
[12] H. P. Zhao, X. Q. Feng, S. W. Yu, W. Z. Cui and F. Z. Zou, Mechanical properties of silkworm cocoons, Polymer, 2005, Vol. 46, No. 21, pp. 9192–9201.
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(2) Cell mechanics
[13] Yue Li, Guang-Kui Xu, Bo Li, Xi-Qiao Feng, A molecular mechanisms-based biophysical model for two-phase cell spreading  Applied Physics Letters, 2010, Vol. 96, No. 4, pp. 043703 (1–3). [ PDF ]
[14] L. T. Gao, Y. Liu, Q. H. Qin, X. Q. Feng, Morphological stability analysis of vesicles with mechanical-electrical coupling effects, Acta Mechanica Sinica, 2010, No. 26, pp. 5–11. [ PDF ]
[15] G. K. Xu, X. Q. Feng, H. P. Zhao, B. Li, Theoretical study on the competition between cell-cell and cell-matrix adhesions, Physical Review E, 2009, Vol. 80, No. 1, pp. 011921.
[16] L. T. Gao, X. Q. Feng, and H. Gao, A phase field method for simulating morphological evolution of vesicles in electric fields, Journal of Computational Physics, 2009, Vol. 228, No. 11, pp. 4162–4181.
[17]  L. T. Gao, X. Q. Feng, Y. J. Yin, H. Gao, An electromechanical liquid crystal model of vesicles, Journal of the Mechanics and Physics of Solids, 2008, Vol. 56, No. 9, pp. 2844–2862.
[18] W. D. Shi, X. Q. Feng and H. Gao, Two dimensional model of vesicle adhesion on curved substrates, Acta Mechanica Sinica, 2006, Vol. 22, No. 6, pp. 529– 535.
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(3) Micromechanics and nanomechanics
[19] Y. Li, Y. P. Cao, X. Q. Feng, H. Gao, A Monte Carlo form-finding method for large scale regular and irregular tensegrity structures, International Journal of Solids and Structures, 2010, Vol. 47, pp. 1888–1898. [ PDF ]
[20] B. Li, S. Q. Huang, X. Q. Feng, Buckling and postbuckling of a compressed thin film bonded on a soft elastic layer: a three dimensional analysis, 2010, Archive of Applied Mechanics, Vol. 80, pp. 175–188. [ PDF ]
[21] G. K. Xu, X. Q. Feng, S. W. Yu, Controllable nanostructural transitions in grafted nanoparticle-block copolymer composites, Nano Research, 2010, Vol. 3, pp. 356–362. [ PDF ]
[22] X. P. Zheng, Y. P. Cao, B. Li, X. Q. Feng, G. F. Wang, Surface effects in various bending-based test methods for measuring the elastic property of nanowires, Nanotechnology, Vol. 21, pp. 205702. [ PDF ]
[23] Y. P. Cao, X. Y. Ji, X. Q. Feng, Geometry independence of the normalized relaxation functions of viscoelastic materials in indentation, Philosophical Magazine, 2010, Vol. 90, No. 12, pp. 1639–1655. [ PDF ]
[24] X. Y. Ji, Y. P. Cao, X. Q. Feng, Micromechanics prediction of the effective elastic moduli of graphene sheet-reinforced polymer nanocomposites, Modelling and Simulation in Material Science and Engineering, 2010, Vol. 18, pp. 045005. [ PDF ]
[25] Guang-Kui Xu, X. Q. Feng, and Yue Li, Self-assembled nanostructures of homopolymer and diblock copolymer blends in a selective solvent, Journal of Physical Chemistry B, 2010, Vol. 114, No. 3, pp. 1257–1263. [ PDF ]
[26] X. Q. Feng, Y. Li, Y. P. Cao, S. W. Yu, Y. T. Gu, Design methods of rhombic tensegrity structures, Acta Mechanica Sinica, 2010, [ PDF ]
[27] Y. Li, X. Q. Feng, Y. P. Cao, and H. Gao, Constructing tensegrity structures from one-bar elementary cells, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010, Vol. 466, No. 1, pp. 45–61. [ PDF ]
[28] R. Xia, J. L. Wang, R. Y. Wang, X. D. Li, X. Zhang, X. Q. Feng, Y. Ding, Correlation of thermal and electrical conductivities of nanoporous gold. Nanotechnology, 2010, Vol. 21, No. 8, pp. 085703(1–5). [ PDF ]
[29] G. K. Xu, Y. Li, B. Li, X. Q. Feng, and H. Gao, Self-assembled lipid nanostructures encapsulating nanoparticles in aqueous solution, Soft Matter, 2009, Vol. 5, No. 20, pp. 3977–3983.
[30] X. Q. Feng, R. Xia, X. D. Li, and B. Li, Surface effects on the effective Young’s modulus of nanoporous materials, Applied Physics Letters, 2009, Vol. 94, No. 1, pp. 011916.
[31] G. F. Wang and X. Q. Feng, Surface effects on buckling of nanowires under uniaxial compression, Applied Physics Letters, 2009, Vol. 94, No. 14, pp. 141913.
[32] B. Li, X. Q. Feng, Y. Li and G. F. Wang, Morphological instability of spherical soft particles induced by surface charges, Applied Physics Letters, 2009, Vol. 95, No. 1, pp. 021903 (1–3).
[33] Y. P. Cao, X. P. Zheng, B. Li and X. Q. Feng, Determination of the elastic modulus of micro- and nanowires/tubes using a buckling-based metrology, Scripta Materialia, 2009, Vol. 61, No. 11, pp. 1044–1047.
[34] X. P. Zheng, Y. P. Cao, B. Li, X. Q. Feng, H. Jiang and Y. G. Huang. Determining the elastic modulus of thin films using a buckling-based method: Computational study, Journal of Physics D: Applied Physics, 2009, Vol. 42, No. 17, pp. 175506(1–7).
[35] R. Xia, C. X. Xu, W. W. Wu, X. D. Li, X. Q. Feng, and Y. Ding. Microtensile tests of mechanical properties of nanoporous Au thin films, Journal of Materials Science, 2009, Vol. 44, No. 17, pp. 4728–4733.
[36]  X. Q. Feng, L. M. Qian, W. Y. Yan and Q. P. Sun, Wearless scratch of shape memory alloys due to phase transformational shakedown, Applied Physics Letters, 2008, Vol. 92, No. 12, pp. 121909(1–3).
[37] J. S. Wang, X. Q. Feng, G. F. Wang and S. W. Yu, Twisting of nanowires induced by anisotropic surface stresses, Applied Physics Letters, 2008, Vol. 92, No. 19, pp. 191901(1–3).
[38] S. Y. Fu, X. Q. Feng, Y. W. Mai and B. Lauke, Effects of particle size, particle/matrix interface adhesion and particle loading on mechanical properties of particulate polymer composites, Composites Part B: Engineering, 2008, Vol. 39, No. 6, pp. 933-961.
[39] Z. Qin, Q. H. Qin and X. Q. Feng, Mechanical properties of carbon nanotubes with intramolecular junctions: Molecular dynamics simulations, Physics Letter A, 2008, Vol. 372, No. 44, pp. 6661–6666.
[40] Z. Qin, J. Zou and X. Q. Feng, Influence of water on the frequency of carbon nanotube oscillators, Journal of Computational and Theoretical Nanoscience, 2008, Vol. 5, No. 7, pp. 1403–1407.
[41] Z. Qin, X. Q. Feng, J. Zou, Y. J. Yin, Molecular dynamics simulations of deformation and rupture of super carbon nanotubes under tension, Journal of Nanoscience and Nanotechnology, 2008, Vol. 8, No. 12, pp. 6274–6282.
[42] X. P. Zheng, H. P. Zhao, L. T. Gao, J. L. Liu, S. W. Yu, and X. Q. Feng, Elasticity-driven droplet movement on a microbeam with gradient stiffness. Journal of Colloid and Interface Science, 2008, Vol. 323, No. 1, pp. 133–140.
[43] S. Q. Huang, B. Li, and X. Q. Feng, Three-dimensional analysis of spontaneous surface of thin soft films. Journal of Applied Physics, 2008, Vol. 103, No. 8, pp. 083501(1–8).
[44] J. Q. Zhang, S. W. Yu, X. Q. Feng and G. F. Wang, Theoretical analysis of adsorption-induced microcantilever bending. Journal of Applied Physics, 2008, Vol. 103, No. 9, pp. 093506(1–6).
[45] G. F. Wang, X. Q. Feng, T. J. Wang and W. Gao, Effects of surface elasticity on the stress distributions in the vicinity of a crack tip, Journal of Applied Mechanics, 2008, Vol. 75, No. 1, pp. 011001(1–5).
[46] S. Q. Huang and X. Q. Feng, Spinodal surface instability of soft elastic thin films, Acta Mechanica Sinica, 2008, Vol. 24, No. 3, pp. 289–296.
[47] G. F. Wang and X. Q. Feng, Effects of surface elasticity and residual surface tension on the natural frequency of microbeams, Applied Physics Letters, 2007, Vol. 90, No. 23, pp. 231904(1–3).
[48] G. F. Wang and X. Q. Feng, Effects of surface stresses on contact problems at nano scale, Journal of Applied Physics, 2007, Vol. 101, No. 1, pp. 013510(1–6).
[49] G. F. Wang, X. Q. Feng and S. W. Yu, Interface effects on the diffraction of plane compressional waves by a nanosized spherical inclusion, Journal of Applied Physics, 2007, Vol. 102, No. 4, pp. 043533(1–6).
[50] G. F. Wang, X. Q. Feng and S. W. Yu, Surface buckling of a bending microbeam due to surface elasticity, Europhysics Letters, 2007, Vol. 77, No. 4, pp. 44002(1–4).
[51] W. G. Jiang, X. Q. Feng and C. W. Nan, A three-dimensional analytical method for estimating the thermal residual stresses in micro multilayer ceramic capacitors, Composites Science and Technology, 2008, Vol. 68, No. 3–4, pp. 692–698.
[52] W. G. Jiang, X. Q. Feng and C. W. Nan, Influences of residual thermal stresses and geometric parameters on field distribution in multilayer ceramic capacitors under electric bias, Journal of Physics D: Applied Physics, 2008, Vol. 41, No. 13, pp. 135310(1–6).
[53] W. G. Jiang, X. Q. Feng, G. Yang, Z. X. Yue and C. W. Nan, Influences of thickness and number of dielectric layers on residual stresses in micro multilayer ceramic capacitors, Journal of Applied Physics, 2007, Vol. 101, No. 10, pp. 104117(1–6).
[54] W. Y. Yan, Q. P. Sun, L. M. Qian and X. Q. Feng, Analysis of spherical indentation of superelastic shape memory alloys, Int. J. Solids and Structures, 2007, Vol. 44, No. 1, pp. 1–17.
[55] X. Q. Feng and Q. P. Sun, Shakedown analysis of shape memory alloy structures, Int. J. Plasticity, 2007, Vol. 23, No. 2, pp. 183–206.
[56] Z. Qin, X. Q. Feng, J. Zou, Y. J. Yin and S.W. Yu, Superior flexibility of super carbon nanotubes: Molecular dynamics simulations. 2007, Applied Physics Letters, Vol. 91, No. 4, pp. 043108(1–3).
[57] Z. X. Lu, S. W. Yu, X. Y. Wang and X. Q. Feng, Effect of interfacial slippage in peel test: theoretical model, European Physical Journal E, 2007, Vol. 23, No. 1, pp. 67–76.
[58] J. Zou, B. H. Ji, X. Q. Feng and H. Gao, Self-assembly of single-walled carbon nanotubes into multi-walled carbon nanotubes in water: molecular dynamics simulations. Nano Letters, 2006, Vol. 6, No. 3, pp. 430–434.
[59] J. Zou, B. H. Ji, X. Q. Feng and H. Gao, Molecular dynamics studies of carbon-water-carbon composite nanotubes. Small, 2006, Vol. 2, No. 11, pp. 1348–1355.
[60] G. F. Wang, T. J. Wang and X. Q. Feng, Surface effects on the diffraction of plane compressional waves by a nanosized circular hole, Applied Physics Letters, 2006, Vol. 89, No. 23, pp. 231923(1–3).
[61] W. Y. Yan, Q. P. Sun, X. Q. Feng and L. M. Qian, Determination of transformation stresses of shape memory alloy thin films - a method based on spherical indentation, Applied Physics Letters, 2006, Vol. 88, No. 24, pp. 241912(1–3).
[62] J. Song, H. Jiang, D. L. Shi, X. Q. Feng, Y. Huang, M. F. Yu and K. C. Hwang, Stone-Wales transformation: precursor of fracture in carbon nanotubes, International Journal of Mechanical Science, 2006, Vol. 48, No. 12, pp. 1464–1470.
[63] S. Q. Huang, Q. Y. Li, X. Q. Feng and S. W. Yu, Pattern instability of a soft elastic film under van der Waals forces. International Symposium on Macro-, Meso-, Micro- and Nano-Mechanics of Materials (MM2003), June 11–13, 2003, Hong Kong. Mechanics of Materials, 2006, Vol. 38, No. 1–2, pp. 88–99.
[64] D. L. Shi, X. Q. Feng, H. Q. Jiang, Y. Huang and K. C. Hwang, Multiscale analysis of fracture of carbon nanotubes embedded in composites, International Journal of Fracture, 2005, Vol. 134, No. 3–4, pp. 369–386.
[65] X. Q. Feng and Y. Huang, Mechanics of Smart-Cut® technology, Int. J. Solids and Structures, 2004, Vol. 41, No. 16–17, pp. 4299–4320.
[66] D. L. Shi, X. Q. Feng, Y. Huang, K. C. Hwang and H. Gao, The effect of nanotube waviness and agglomeration on the elastic property of carbon nanotube-reinforced composites, Journal of Engineering Materials and Technology, 2004, Vol. 126, Nr. 3, pp. 250–257.
[67] H. Jiang, X. Q. Feng, Y. Huang, K. C. Hwang, and P. D. Wu., Defect nucleation in carbon nanotubes under tension and torsion: Stone-Wales transformation, Computer Methods in Applied Mechanics and Engineering, 2004, Vol. 193, No. 31, pp. 3419–3429.
[68] D. L. Shi, X. Q. Feng, Y. Huang and K. C. Hwang, Critical evaluation of the stiffening effect of carbon nanotubes in composites, The Fifth International Conference on Fracture & Strength of Solids (FEOFS2003), Tohoko University, Sendai, Japan, October 20–22, 2003. Key Engineering Materials, 2004, Vol. 261–263, pp. 1487–1492.
[69] G. F. Wang, X. Q. Feng, S. W. Yu and C. W. Nan, Interface effects on effective elastic moduli of nanocrystalline materials, Materials Science and Engineering A, 2003, Vol. 363, No. 1–2, pp. 1–8.
[70] H. X. Li, Y. H. Liu, X. Q. Feng and Z. Z. Cen, Limit analysis of ductile composites based on homogenization theory, Proceedings of the Royal Society of London A, 2003, Vol. 459, No. 2031, pp. 659–675.
 
 
(4) Damage and fracture mechanics
[71] X. Q. Feng and S. W. Yue, Damage micromechanics for constitutive relations and failure of microcracked quasi-brittle materials, International Journal of Damage Mechanics, 2010, Vol. 0, No. 00, pp. 1–38. [ PDF ]
[72] X. L. Fu, G. F. Wang, X. Q. Feng, Surface effects on mode-I crack tip fields: A numerical study, Engineering Fracture Mechanics, 2010, Vol. 77, pp. 1048–1057. [ PDF ]
[73] H. M. Xu, X. F. Yao, X. Q. Feng and H. Y. Yeh, Dynamic stress intensity factors of a semi-infinite crack in an orthotropic functionally graded material, Mechanics of Materials, 2008, Vol. 40, No. 1–2, pp. 37–47.
[74] H. M. Xu, X. F. Yao, X. Q. Feng, H. Y. Yeh, The behavior of a functionally graded orthotropic half-space under line loads, Composites Science and Technology, 2008, Vol. 68, No. 1, pp. 27–34.
[75] L. Ma, X. Y. Wang, X. Q. Feng and S. W. Yu, Numerical analysis of interaction and coalescence of numerous microcracks, Engineering Fracture Mechanics, 2005, Vol. 72, No. 12, pp. 1841–1865.
[76] X. Q. Feng, J. Y. Li and S. W. Yu, A simple method for calculating interaction of numerous microcracks and its applications, Int. J. Solids and Structures, 2003, Vol. 40, No. 2, pp. 447–464.
[77] B. Gu, S. W. Yu and X. Q. Feng, Transient response of an interface crack between dissimilar piezoelectric layers under mechanical impacts, International Journal of Solids and Structures, 2002, Vol. 39, No. 7, pp. 1743–1756.
[78] B. Gu, S. W. Yu and X. Q. Feng, Elastic wave scattering by an interface crack between a piezoelectric layer and an elastic substrate. International Journal of Fracture, 2002, Vol. 116, No. 2, pp. L29–34.
[79] B. Gu, S. W. Yu and X. Q. Feng, Transient response of an insulating crack between dissimilar piezoelectric layers under mechanical and electrical impacts. Archive of Applied Mechanics, 2002, Vol. 72, No. 8, pp. 615–629.
[80] B. Gu, S. W. Yu, X. Q. Feng and Yiu-Wing Mai, Scattering of Love waves by an interface crack between a piezoelectric layer and an elastic substrate, Acta Mechanica Solida Sinica, 2002, Vol. 15, No. 2, pp. 111–118.
[81] X. Q. Feng and D. Gross, Three-dimensional micromechanical model for quasi-brittle solids with residual strains under tension, Int. J. Damage Mechanics, 2000, Vol. 9, No. 1, pp. 79–110.
[82] X. Q. Feng, New estimates of effective moduli of microcracked materials, Key Engineering Materials, 2000, Vol. 183–187, pp. 667–672.
[83] X. Q. Feng and X. S. Liu, On shakedown of three-dimensional elastoplastic strain-hardening structures, Int. J. Plasticity, 1996, Vol. 12, No. 10, pp. 1241–1256.
[84] X. Q. Feng and S. W. Yu, Micromechanical modeling of tensile response of elastic-brittle materials, Int. J. Solids and Structures, 1995, Vol. 32, No. 22, pp. 3359–3374.
[85] X. Q. Feng and S. W. Yu, Damage and shakedown analysis of structures with strain-hardening, Int. J. Plasticity, 1995, Vol. 11, No. 3, pp. 237–249.
[86] S. W. Yu and X. Q. Feng, A micromechanics-based model for microcrack-weakened brittle solids, Mechanics of Materials, 1995, Vol. 20, No. 1, pp. 59–76.
[87] X. Q. Feng and S. W. Yu, An upper bound on damage of elastic-plastic structures at shakedown, Int. J. Damage Mechanics, 1994, Vol. 3, No. 3, pp. 277–289.
[88] X. Q. Feng and S. W. Yu, A new damage model for microcrack-weakened brittle solids, Acta Mechanica Sinica, 1993, Vol. 9, No. 3, pp. 251–260.

Contact Details

Tel: 86-10-6277 2934
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Web link: http://mech.tsinghua.edu.cn