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Publications

Habilitation a diriger les recherches :

En préparation / in preparation:

Des plaques malmenées / thin sheet elasticity  :

  1. J.Marthelot,B.Roman,J.Bico, J.Teisseire, D.Dalmas, F.Melo Self-replicating cracks: A collaborative fracture mode in thin films. Phys. Rev. Lett. (in press)
  2. A.Pocheau, B.Roman Reversibility of crumpling on compressed thin sheets EPJ E Volume 37 Issue 28 (2014) [ pdf ]
  3. M.Pineirua, N.Tanaka, B.Roman, J.Bico, Capillary buckling of a floating annulus Soft Matter Volume 9, Issue 46, Pages 10985-10992 (2013) [ pdf ]
  4. B.Roman, Fracture path in brittle thin sheets : a unifying review on tearing International Journal of Fracture Volume 182, Issue 2 (2013), Page 209-237 [ pdf ]
  5. V.Romero, B.Roman, E.Hamm, E.Cerda Spiral Tearing of Thin Films Soft Matter 2013 (in press) volume 9 (34), 8282-8288, doi 10.1039/C3SM50564B [ pdf ]
  6. A.Takei, B.Roman, J.Bico, E.Hamm, F.Melo Forbidden Directions for the Fracture of Thin Anisotropic Sheets: An Analogy with the Wulff Plot Phys. Rev. Lett. 111, 144301 (2013) [pdf + Suppl.] DOI: 10.1103/PhysRevLett.110.144301
  7. J.Hure, B.Roman and J.Bico Stamping and wrinkling of elastic sheets Phys. Rev. Lett. 109, 054302 (2012) (2012) [pdf] DOI: 10.1103/PhysRevLett.109.054302
  8. B.Roman and A.Pocheau Stress Defocusing in Anisotropic Compaction of Thin Sheets Phys. Rev. Lett. 108 (2012) 074301 [pdf] doi:10.1103/PhysRevLett.108.074301
  9. A.Takei, F.Brau, B.Roman and J.Bico Stretch-induced wrinkles in reinforced membranes: from out-of-plane to in-plane structures Europhys. Lett. 96 (2011) 64001 [pdf] doi: 10.1209/0295-5075/96/64001
  10. H.Vandeparre, M.Pineirua, F.Brau, B.Roman, J.Bico, C.Gay, W.Bao, C.N.Lau, P.M.Reis, and P.Damman Wrinkling hierarchy in constrained thin sheets from suspended graphene to curtains Phys. Rev. Lett. Phys. Rev. Lett., 106, 224301 (2011) [pdf]
  11. J.Hure, B.Roman, and J.Bico Wrapping an adhesive sphere with a sheet Phys. Rev. Lett. 106, 174301 (2011). [pdf]
  12. B.Roman and J.Bico Elasto-capillarity: deforming an elastic structure with a liquid droplet J. Phys.: Condens. Matter 22 (2010) 493101 [pdf] doi: 10.1088/0953-8984/22/49/493101
  13. Y.Aoyanagi, J.Hure, J.Bico and B.Roman Random blisters on stickers: metrology through defects Soft Matter in press [pdf] doi: 10.1039/C0SM00436G
  14. M.Pineirua, J.Bico, B.Roman Capillary origami controlled by an electric field Soft Matter (2010) 6, 4491-4496 [pdf] DOI: 10.1039/c0sm00004c [movie]
  15. F. Chiodi, B. Roman and J. Bico Piercing an interface with a brush: Collaborative stiffening Europhys. Lett. 90 (2010) 44006 [ pdf ] doi: 10.1209/0295-5075/90/44006
  16. P.M.Reis, F.Corson, A.Boudaoud, B.Roman Localization through Surface Folding in Solid Foams under Compression Phys. Rev. Lett. 103 No4 Article 045501 (2009) [pdf]
  17. D.Vella,J. Bico,A. Boudaoud, B.Roman and P.M. Reis The macroscopic delamination of thin films from elastic substrates PNAS Vol 106 No27, Pages 10901-10906 (2009) [pdf]
  18. Reis PM, Kumar A, Shattuck MD, Roman B. Unzip instabilities: Straight to oscillatory transitions in the cutting of thin polymer sheets Europhys. Lett. 82 No6, Article 64002 (juin 2008) [pdf]
  19. E.Hamm, P.M.Reis, M.Leblanc, B.Roman, E.Cerda Tearing as a test for mechanical characterization of thin adhesive films Nature Materials Vol.7 No 5, 386-390 (mai 2008) [pdf + suppl. material]
  20. A.Boudaoud, J.Bico and B.Roman Elastocapillary coalescence: Aggregation and fragmentation with a maximal size Phys.Rev.E. 76, 060102 (2007) [pdf]
  21. E.sharon, B.Roman, S. Smith and H.Swinney Geometrically induced buckling cascade observed in free sheets. Phys.Rev.E 75, 046211 (2007) [pdf]
  22. S.Neukirch, B.Roman, B. de Gaudemaris, J.Bico Piercing a liquid surface with an elastic rod: buckling under capillary forces JMPS. 55 (6) p1212-1235 (juin 2007) [pdf]
  23. C. Py, P. Reverdy, L. Doppler, J. Bico, B. Roman and C. N. Baroud, Capillary origami: spontaneous wrapping of a droplet with an elastic sheet Phys.Rev.Lett 98 156103 (2007) [pdf ]
  24. C.Py, R.Bastien, J.Bico, B.Roman, A.Boudaoud 3D aggregation of wet fibers Europhys. Lett. 77 No 4 (February 2007) 44005 (5pp) [pdf]
  25. B.Audoly, P.M. Reis and B.Roman Cracks in thin sheets : When geometry rules the fracture path Phys.Rev.Lett. vol 95 025502 (2005) [pdf]
  26. J.Bico, B.Roman, L.Moulin, A.Boudaoud Elasto-capillary coalescence in wet hair Nature Brief Communication 432 (9 decembre 2004) p.690 [pdf]
  27. E.Hamm, B.Roman, and F.Melo Dynamics of developable cones under shear Phys. Rev. E 70, 026607 (2004) [pdf]
  28. A.Pocheau, B.Roman Uniqueness of solution for a constrained elastica. Physica D 192 (2004) 161-310 [pdf]
  29. B.Roman, P.M.Reis, B.Audoly, S.DeVilliers, V.Viguié, D.Vallet Fissure oscillantes dans les feuilles minces / Oscillatory fracture paths in thin elastic sheets C.R. Mécanique 331 (2003) 811-816 [pdf] .
  30. M.Marder, E.Sharon , B.Roman, S. Smith Theory of the edge of leaves Europhysics Letters 62 (4) pp498-504 (2003). [pdf]
  31. E.Sharon, B. Roman, G.S. Shin, M.Marder, H. Swinney Buckling in free sheet Nature Brief communication 419 (10 octobre 2002) p.580. [pdf]
  32. B.Roman, A.Pocheau Postbuckling of bilaterally constrained rectangular thin plates JMPS. 50 (11) (Novembre 2002) pp. 2379-2401. [article (pdf)]
  33. B.Audoly, A.Pocheau, B. Roman Secondary buckling patterns of a thin plate under in-plane compression. Eur.Phys.J.-B. 27 (1) (mai 2002) pp.7-10. [article (pdf)]
  34. B.Roman, A.Pocheau, Buckling cascade of thin plates, Europhys. lett. 46 (5) (1999). [article (pdf)]

Autres sujets / other research :

  1. R.Berthet, A.Petrosyan, S.Residori, B.Roman and S.Fauve, Effect of multiplicative noise on parametric instability Physica D 174 p84-99 (2003). [article (pdf)]
  2. S.Residori, R.Berthet, B.Roman and S.Fauve, Noise induced bistability of parametric surface waves Phys.Rev.Lett 88 (2) janvier 2002 [ article (pdf)]
  3. R.Berthet, A.Petrosyan, B.Roman An analogue experiment of the parametric instability Am. J. Phys. 70 (7) pp.744-749 (Juillet 2002) [article (pdf)]
  4. P.Roux, B.Roman, M.Fink,  Time-reversal in an ultrasonic waveguide, Applied physics letter, April 7 (97). [article (pdf)]
  5. E.Grossman, B.Roman,  Density variations in a one-dimensional granular system , Physics of fluids,  December 8 (96). [article (pdf)]

Comment

  • B. Audoly, B. Roman, and P. M. Reis Comment on "Crack Street: The Cycloidal Wake of a Cylinder Tearing through a Thin Sheet" Phys.Rev.Lett. vol 94, n.12, (1 April 2005) [pdf]

Articles de vulgarisation ou de journalistes scientifiques  / broad audience paper:

  • "Micro-Origami" Physical Review Focus (2007) [lien]
  • "Plastic sheets perform auto-origami" New Scientist Tech (2007) [lien]
  • Des chercheurs au poils.
  • "Cracked it" dans Nature science update (2005) [lien]
  • A.Cho No frills explanation for fancy folliage?  Science now  (2003)  [pdf]
  • A.Pocheau, B.Roman, Entre l'arbre et l'écorce, Pour la Science (édition française), mai 1999. []

Actes de colloques  / Proceedings  :

  • B.Roman, A.Pocheau,  De l'analyse intégrale de l'elastica aux propriétés globales de plaques écrasées, rencontre du non-linéaire 2000. [pdf]
  • R.Berthet, S.Residori, B.Roman, S.Fauve, L'instabilite parametrique en presence de bruit multiplicatif rencontres du non-linéaire 2000.
  • B.Roman, A. Pocheau, Cascade de bifuractions de flambage : réponse mécanique et similarité, rencontre du non-linéaire 1999. [pdf]

Mais aussi / and also:

  •  B.Roman, Habilitation a dirigier les recherches, Universit├ęPierre et Marie CurieFaculte d'ingenierie [pdf]
  •  B.Roman, thèse (Aix-Marseille I)  'De l'elastica aux plaques plissées"  (2000) [pdf]
  • B.Andreotti, B.Audoly, R.Brenot, S.Deniau, JP.Devaux, B.Roman, " Dix problèmes corrigés posés à l'Ecole polytechnique et aux Ecoles normales supérieures"   VUIBERT supérieur, Séries "grandes annales des concours" 1994.