Concept

Flexion (matériau)

Publications associées (344)

Vibrational spectra of vitreous germania from first-principles

We report on a first-principles investigation of the structural and vibrational properties of vitreous germania (v-GeO2). Our work focuses on a periodic model structure of 168 atoms, but three smaller models are also studied for comparison. We first carry ...

2006

Exploring the Mechanical Properties of Single Vimentin Intermediate Filaments by Atomic Force Microscopy

László Forró, Andrzej Kulik, Sandor Kasas, Sylvia Jeney, Camilo Guzman

Intermediate filaments (IFs), together with actin filaments and microtubules, compose the cytoskeleton. Among other functions, Ts impart mechanical stability to cells when exposed to mechanical stress and act as a support when the other cytoskeletal filame ...

Elsevier2006

Measurement of the Bending Strength of Vapor-Liquid-Solid Grown Silicon Nanowires

Christophe Ballif, Johann Michler, Benedikt Moser

The fracture strength of silicon nanowires grown on a [111] silicon substrate by the vapor-liquid-solid process was measured. The nanowires, with diameters between 100 and 200 nm and a typical length of 2 μm, were subjected to bending tests using an atomic ...

2006

Optimized high-precision flexural hinge shapes

Simon Nessim Henein

Results of a strength-based optimisation of flexural hinge shapes are given. Both pre-defined and freeform parametric shapes are considered. By employing nonlinear parametric optimisation algorithms, shapes that are best suited for the desired applications ...

Euspen2006

Design and characterisation of low-cost thick-film piezoresistive force sensors for the 100 mN to 100 N range

Peter Ryser, Thomas Maeder, Giancarlo Corradini, Vincent Fahrny, Sven Nico Stauss

Two simple low-cost thick-film force sensor designs are optimised, characterised and tested in this work, combining calculations of sensor element and joint stresses, joint strength characterisation and measurement of complete sensors. All sensors are base ...

2005

Cracks in Thin Sheets: When Geometry Rules the Fracture Path

Pedro Miguel Nunes Pereira de Almeida Reis

We study the propagation of brittle fractures coupled to large out-of-plane bending, as when a brittle elastic thin sheet is cut by a moving object. Taking into account the separation of the film’s bending and stretching energies and using fracture theory ...

American Physical Society2005

Global and local linear buckling behavior of a chiral cellular structure

Alessandro Spadoni

This paper investigates the flat-wise compression behavior of an innovative cellular structure configuration. The considered layout has a hexagonal chiral geometry featuring cylinders, or nodes, joined by ligaments, or ribs. The resulting assembly is chara ...

2005

Connexions par adhérence pour les ponts mixtes acier-béton

Michel Thomann

When building new bridge structures, or widening or replacing existing bridges, the duration of on site work has a significant influence not only on the costs, but also on the potentially harmful effects (noise, pollution, traffic jam, deviation) of the co ...

EPFL2005

Correlation between sizing formulation and compressive behaviour of concentrated glass bundle suspensions

Véronique Michaud, Emmanuelle Comte

The correlation between sizing formulation, bundle mechanical characteristics, and bundle-matrix static and dynamic interactions are investigated. Two glass-fiber sizing formulations are considered, one containing polyvinyl acetate (PVAc) and the other pol ...

2005

First-principles determination of the structural, vibrational and thermodynamic properties of diamond, graphite, and derivatives

Nicola Marzari, Nicolas Frank Mounet

The structural, dynamical, and thermodynamic properties of diamond, graphite and layered derivatives (graphene, rhombohedral graphite) are computed using a combination of density-functional theory total-energy calculations and density-functional perturbati ...

2005

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