Thuy Nguyen

@article{Montiel0000,

title = {Effect of architectural disorder on the elastic response in 2D microlattices},

author = {A. Montiel, T. Nguyen, C. Rountree, V. Geertsen, P. Guenoun, D. Bonamy},

editor = {American Physical Society},

year  = {2021},

date = {2021-00-00},

journal = {Physical Review B},

keywords = {},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Nguyen2021b,

title = {Size effects on the fracture energy of brittle materials},

author = {T. Nguyen and D. Bonamy},

year  = {2021},

date = {2021-00-00},

keywords = {},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Nguyen2019,

title = {Role of the Crystal Lattice Structure in Predicting Fracture Toughness},

author = {T. Nguyen and D. Bonamy},

editor = {American Physical Society},

url = {https://www.devinci.fr/physrevlett_19_nguyenbonamy-2/},

doi = {https://doi.org/10.1103/PhysRevLett.123.205503},

year  = {2019},

date = {2019-11-15},

journal = {Physical Review Letter},

volume = {123},

pages = {205503},

abstract = {We examine the atomistic scale dependence of a material’s resistance to failure by numerical simulations and analytical analysis in electrical analogs of brittle crystals. We show that fracture toughness depends on the lattice geometry in a way incompatible with Griffith’s relationship between fracture and free surface energy. Its value finds its origin in the matching between the continuum displacement field at the engineering scale, and the discrete nature of solids at the atomic scale. The generic asymptotic form taken by this field near the crack tip provides a solution for this matching, and subsequently a way to predict toughness from the atomistic parameters with application to graphene.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nguyen2019b,

title = {Supplementary Material for "Role of the crystal lattice structure in the selection of fracture toughness"},

author = {T. Nguyen and D. Bonamy},

editor = {American Physical Society},

url = {https://www.devinci.fr/prl-thuy-suppmat-v2/},

doi = {PhysRevLett.123.205503},

year  = {2019},

date = {2019-11-15},

journal = {Physical Review Letter},

volume = {123},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nguyen2012,

title = {Approximating the asymmetric profitable tour},

author = {V.H. Nguyen and T. Nguyen},

editor = {Inderscience},

url = {https://www.inderscience.com/info/inarticle.php?artid=46689},

doi = {    DOI: 10.1504/IJMOR.2012.046689},

year  = {2012},

date = {2012-05-02},

journal = {International Journal of Mathematics in Operational Research},

volume = {4},

number = {3},

pages = {294},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nguyen2010b,

title = {Approximating the asymmetric profitable tour},

author = {V.H. Nguyen and T. Nguyen},

editor = {Elsevier},

url = {https://www.devinci.fr/1-s2-0-s1571065310001162-main/},

doi = {https://doi.org/10.1016/j.endm.2010.05.115},

year  = {2010},

date = {2010-08-01},

journal = {Electronic Notes in Discrete Mathematics},

volume = {36},

pages = {907},

abstract = {We study the version of the asymmetric prize collecting traveling salesman problem, where the objective is to find a directed tour that visits a subset of vertices such that the length of the tour plus the sum of penalties associated with vertices not in the tour is as small as possible. In [Dell'Amico, M., Maffioli, F. and Väbrand P.: On Prize-collecting Tours and the Asymmetric Travelling Salesman Problem, Int. Trans. Opl Res., Vol. 2, 297–308 (1995)], the authors defined it as the Profitable Tour Problem (PTP). We present an (1 + ⌈log(n)⌉)-approximation algorithm for the asymmetric PTP with n is the vertex number. The algorithm that is based on Frieze et al.'s heuristic for the asymmetric traveling salesman problem as well as a method to round fractional solutions of a linear programming relaxation to integers (feasible solution for the original problem), represents a directed version of the Bienstock et al.'s [Bienstock, D., Goemans, M.X., Simchi-Levi, D. and Williamson, D.P.: A note on the prize collecting traveling salesman problem, Math. Prog., Vol. 59, 413–420 (1993)] algorithm for the symmetric PTP.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nguyen2010,

title = {Scaling and universality in the kinetic smoothening of interfaces: Application to the analysis of the relaxation of rough vicinal steps of an oxide surface},

author = {T. Nguyen, D. Bonamy, L. Phan Van, J. Cousty and L. Barbier},

editor = {EDP Sciences},

url = {https://www.devinci.fr/epl_10_thuynguyen-2/},

doi = { https://doi.org/10.1209/0295-5075/89/60005 },

year  = {2010},

date = {2010-04-19},

journal = {Europhysics Letters},

volume = {89},

number = {6},

pages = {60005},

abstract = {Relaxation of initially out-of-equilibrium rough interfaces in the presence of thermal noise is investigated using Langevin formalism. During thermal equilibration towards the well-known roughening regime, three scaling regimes observed over three successive ranges of length-scales are evidenced: thermal roughening (late stage) at small scales, transient smoothening at intermediate scales and remnant of the initial conditions at large scales. A generalization of the Family-Vicsek scaling is found for the smoothening regime. This approach allows interpreting a series of AFM images of sapphire surfaces showing the thermal evolution of initially rough step edges.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nguyen2008,

title = {Coarsening of two-dimensional Al2O3 islands on vicinal (1-102) sapphire surfaces},

author = {T. Nguyen, D. Bonamy, L. Phan Van, J. Cousty and L. Barbier},

editor = {Elvier},

doi = {https://doi.org/10.1016/j.susc.2008.08.022},

year  = {2008},

date = {2008-11-01},

journal = {Surface Science},

volume = {602},

number = {21},

pages = { 3232-3238},

abstract = {The evolution of two-dimensional (2D) islands which result from a chemo-mechanical polishing of vicinal (1, −1, 0, 2) sapphire surfaces was explored by atomic force microscopy (AFM) after annealing in air. The evolution of the surface morphology is followed after isothermal annealing (1173 K) for duration varying from 1 h to 53 h and isochronal annealing at temperatures between 1023 K < T < 1253 K. Statistical analysis of the AFM images gives evidence that an anisotropic Ostwald ripening governs the evolution of the 2D island distribution. The activation energy for mass transport on the terrace is found to be 1.3 ± 0.1 eV.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}