Now showing items 21-40 of 87

    • Confined bilayers passively regulate shape and stress 

      Staykova, M.; Arroyo Balaguer, Marino; Rahimi Lenji, Mohammad; Stone, H.A. (2013-01)
      Article
      Open Access
      Lipid membranes are commonly confined to adjacent subcellular structures or to artificial substrates and particles. We develop an experimental and theoretical framework to investigate the mechanics of confined membranes, ...
    • Continuum mechanics modeling and simulation of carbon nanotubes 

      Arroyo Balaguer, Marino; Belytschko, T. (2005-12)
      Article
      Open Access
      The understanding of the mechanics of atomistic systems greatly benefits from continuum mechanics. One appealing approach aims at deductively constructing continuum theories starting from models of the interatomic interactions. ...
    • Curved fluid membranes behave laterally as an effective viscoelastic medium 

      Rahimi Lenji, Mohammad; DeSimone, Antonio; Arroyo Balaguer, Marino (2013-08-21)
      Article
      Restricted access - publisher's policy
      The lateral mobility of membrane inclusions is essential in biological processes involving membrane-bound macromolecules, which often take place in highly curved geometries such as membrane tubes or small organelles. Probe ...
    • Diverse corrugation pattern in radially shrinking carbon nanotubes 

      Shima, Hiroyuki; Sato, Motohiro; Iiboshi, Kohtaroh; Ghosh, Susanta; Arroyo Balaguer, Marino (2010)
      Article
      Open Access
      Stable cross sections of multiwalled carbon nanotubes subjected to electron-beam irradiation are investigated in the realm of the continuum mechanics approximation. The self-healing nature of sp2 graphitic sheets implies ...
    • Effective coarse-grained simulations of super-thick multi-walled carbon nanotubes under torsion 

      Jian, Zou; Huang, Xu; Arroyo Balaguer, Marino; Zhang, Sulin (2009-02)
      Article
      Open Access
      Under torsion and beyond the buckling point, multi-walled carbon nanotubes (MWCNTs) develop a periodic wave-like rippling morphology. Here, we show that torsional rippling deformations can be accurately described by a ...
    • Efficient implementation of Galerkin meshfree methods for large-scale problems with an emphasis on maximum entropy approximants 

      Peco, Christian; Milian, Daniel; Rosolen, Adrian Martin; Arroyo Balaguer, Marino (2015-04-01)
      Article
      Open Access
      In Galerkin meshfree methods, because of a denser and unstructured connectivity, the creation and assembly of sparse matrices is expensive. Additionally, the cost of computing basis functions can be significant in problems ...
    • Elastic bending modulus of monolayer graphene 

      Lu, Q; Arroyo Balaguer, Marino; Huang, R (2009-05)
      Article
      Open Access
      An analytic formula is derived for the elastic bending modulus of monolayer graphene based on an empirical potential for solid-state carbon atoms. Two physical origins are identified for the non-vanishing bending stiffness ...
    • Embryonic self-fracking 

      Arroyo Balaguer, Marino; Trepat Guixer, Xavier (2019-08-02)
      Article
      Open Access
      From a broken bone to a major earthquake, the fracture of a material usually means trouble. However, in some practical applications engineers have learned how to harness the mechanisms of fracture. This is illustrated by ...
    • Examining the mechanical equilibrium of microscopic stresses in molecular simulations 

      Torres Sánchez, Alejandro; Vanegas, Juan Manuel; Arroyo Balaguer, Marino (2015-06-23)
      Article
      Restricted access - publisher's policy
      The microscopic stress field provides a unique connection between atomistic simulations and mechanics at the nanoscale. However, its definition remains ambiguous. Rather than a mere theoretical preoccupation, we show that ...
    • Finite crystal elasticity of carbon nanotubes based on the exponential Cauchy-Born rule 

      Arroyo Balaguer, Marino; Belytschko, T. (2004-03)
      Article
      Open Access
      A finite deformation continuum theory is derived from interatomic potentials for the analysis of the mechanics of carbon nanotubes. This nonlinear elastic theory is based on an extension of the Cauchy-Born rule called the ...
    • Finite element methods for the non-linear mechanics of crystalline sheets and nanotubes 

      Arroyo Balaguer, Marino; Belytschko, T. (Wiley and Sons, 2004-01)
      Article
      Open Access
      The formulation and finite element implementation of a finite deformation continuum theory for the mechanics of crystalline sheets is described. This theory generalizes standard crystal elasticity to curved monolayer ...
    • Force transduction and lipid binding in MscL: a continuum-molecular approach 

      Vanegas, Juan Manuel; Arroyo Balaguer, Marino (2014-12-01)
      Article
      Open Access
      The bacterial mechanosensitive channel MscL, a small protein mainly activated by membrane tension, is a central model system to study the transduction of mechanical stimuli into chemical signals. Mutagenic studies suggest ...
    • Fourth order phase-field model for local max-ent approximants applied to crack propagation 

      Amiri, Fatemeh; Millán, Daniel; Arroyo Balaguer, Marino; Silani, Mohammad; Rabczuk, Timon (2016-12)
      Article
      Open Access
      We apply a fourth order phase-field model for fracture based on local maximum entropy (LME) approximants. The higher order continuity of the meshfree LME approximants allows to directly solve the fourth order phase-field ...
    • Fracture toughening and toughness asymmetry induced by flexoelectricity 

      Abdollahi Hosnijeh, Amir; Peco, Christian; Millán, Daniel; Arroyo Balaguer, Marino; Catalan, Gustau; Arias Vicente, Irene (2015-09-08)
      Article
      Restricted access - publisher's policy
      Cracks generate the largest strain gradients that any material can withstand. Flexoelectricity (coupling between strain gradient and polarization) must therefore play an important role in fracture physics. Here we use a ...
    • Geometric derivation of the microscopic stress: a covariant central force decomposition 

      Torres Sánchez, Alejandro; Vanegas, Juan Manuel; Arroyo Balaguer, Marino (2016-08)
      Article
      Open Access
      We revisit the derivation of the microscopic stress, linking the statistical mechanics of particle systems and continuum mechanics. The starting point in our geometric derivation is the Doyle-Ericksen formula, which states ...
    • High-order maximum-entropy collocation methods 

      Greco, Francesco; Arroyo Balaguer, Marino (2020-08-01)
      Article
      Restricted access - publisher's policy
      This paper considers the approximation of partial differential equations with a point collocation framework based on high-order local maximum-entropy schemes (HOLMES). In this approach, smooth basis functions are computed ...
    • Hydraulic fracture and toughening of a brittle layer bonded to a hydrogel 

      Lucantonio, Alessandro; Noselli, Giovanni; Trepat Guixer, Xavier; Arroyo Balaguer, Marino; DeSimone, Antonio (2015-10-28)
      Article
      Open Access
      Brittle materials propagate opening cracks under tension. When stress increases beyond a critical magnitude, then quasistatic crack propagation becomes unstable. In the presence of several precracks, a brittle material ...
    • Hydraulic fracture during epithelial stretching 

      Casares, Laura; Vincent, Romaric; Zalvidea, Dobryna; Campillo, Noelia; Navajas, Daniel; Arroyo Balaguer, Marino; Trepat Guixer, Xavier (2015-03-01)
      Article
      Open Access
      The origin of fracture in epithelial cell sheets subject to stretch is commonly attributed to excess tension in the cells' cytoskeleton, in the plasma membrane, or in cell-cell contacts. Here, we demonstrate that for a ...
    • Hydraulic fracturing in cells and tissues: fracking meets cell biology 

      Arroyo Balaguer, Marino; Trepat, Xavier (2017-02-01)
      Article
      Open Access
      The animal body is largely made of water. A small fraction of body water is freely flowing in blood and lymph, but most of it is trapped in hydrogels such as the extracellular matrix (ECM), the cytoskeleton, and chromatin. ...
    • Hydraulic fracturing in cells and tissues: fracking meets cell biology 

      Arroyo Balaguer, Marino; Trepat Guixer, Xavier (2017)
      Article
      Open Access
      The animal body is fundamentally made of water. A small fraction of this water is freely flowing in blood and lymph, but most of it is trapped in hydrogels such as the extracellular matrix (ECM), the cytoskeleton, and ...