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We present a method for computing locally varying nonlinear mechanical properties in particle simulations of amorphous solids. Plastic rearrangements outside a probed region are suppressed by introducing an external field that directly penalizes larg
Externí odkaz:
http://arxiv.org/abs/2307.07866
Autor:
Ruscher, Céline, Cortes-Huerto, Robinson, Hannebauer, Robert, Mukherji, Debashish, Nojeh, Alireza, Phani, A. Srikantha
Using large scale molecular dynamics simulations, we study the thermal conductivity of bare and surface passivated silicon nanowires (SiNWs). For the cross-sectional widths $w \le 2$ nm, SiNWs become unstable because of the surface amorphosization an
Externí odkaz:
http://arxiv.org/abs/2304.11707
Autor:
Mukherji, Debashish, Agarwal, Shubham, de Oliveira, Tiago Espinosa, Ruscher, Céline, Rottler, Jörg
Publikováno v:
Physical Review Materials 7, 115601 (2023)
Toughness $\mathcal{T}$ of a brittle polymeric solid can be enhanced by blending another compatible and ductile polymer. While this common wisdom is generally valid, a generic picture is lacking that connects the atomistic details to the macroscopic
Externí odkaz:
http://arxiv.org/abs/2207.13210
The mechanical non-linear response of dense Brownian suspensions of polymer gel particles is studied experimentally and by means of numerical simulations. It is shown that the response to the application of a constant shear rate depends on the previo
Externí odkaz:
http://arxiv.org/abs/2202.11610
Indentation is a common experimental technique to study the mechanics of polymeric materials. The main advantage of using indentation is because this provides a direct correlation between the microstructure and the small-scale mechanical response, wh
Externí odkaz:
http://arxiv.org/abs/2202.04065
Publikováno v:
Physical Review Materials 6, 025606 (2022)
Thermodynamics controls structure, function, stability and morphology of polymer blends. However, obtaining the precise information about their mixing thermodynamics is a challenging task, especially when dealing with complex macromolecules. This is
Externí odkaz:
http://arxiv.org/abs/2111.04948
Autor:
Walter, Vivien, Ruscher, Céline, Gola, Adrien, Marques, Carlos M., Benzerara, Olivier, Thalmann, Fabrice
Atomistic molecular dynamics simulations have reached a degree of maturity that makes it possible to investigate the lipid polymorphism of model bilayers over a wide range of temperatures. However if both the fluid $L_{\alpha}$ and tilted gel $L_{\be
Externí odkaz:
http://arxiv.org/abs/2102.03812
Autor:
Ruscher, Céline, Rottler, Jörg
Publikováno v:
Tribology Letters 69, 64 (2021)
We study the statistical properties of the yielding transition in model amorphous solids in the limit of slow, athermal deformation. Plastic flow occurs via alternating phases of elastic loading punctuated by rapid dissipative events in the form of c
Externí odkaz:
http://arxiv.org/abs/2102.00279
Publikováno v:
Phys. Rev. E 104, 034603 (2021)
Amorphous solids are yield stress materials that flow when a sufficient load is applied. Their flow consists of periods of elastic loading interrupted by rapid stress drops, or avalanches, coming from microscopic rearrangements known as shear transfo
Externí odkaz:
http://arxiv.org/abs/2101.10688