Surface excess elasticity of gold: Ab initio coefficients and impact on the effective elastic response of nanowires

Elsner, B.; Müller, Stefan; Bargmann, Swantje; Weißmüller, J.

doi:10.1016/j.actamat.2016.10.066

Cited by 34 publications

(21 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Counterintuitively, our results show that at small sizes, despite the largest adhesion, the substrate-induced distortions are the smallest. This is due to the enhanced island stiffness 16,20,21,50,51 , which makes the cost of elastic distortion prohibitive compared to what would be gained by MgO-Ag interaction energy (SI.2.3).…”

Section: Discussionmentioning

confidence: 99%

“…The archetypal mechanical properties of nanowires, on which a great attention was focused for applications to microelectromechanical systems (MEMS), question this approximation. In wires less than a few tens of nanometers in diameter, the larger surface to volume ratio results in strongly size-dependent elastic parameters [16][17][18][19][20][21] . The key question is whether such dependence can be evidenced in supported nano-objects and whether it plays a role in heteroepitaxy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Understanding nanoscale effects in oxide/metal heteroepitaxy

Cabailh

Goniakowski

Noguera

et al. 2019

Phys. Rev. Materials

View full text Add to dashboard Cite

The growth mode of strained epitaxial films relies on the interaction strength, the lattice matching and the mechanical response of the system. The present work focuses on the basic physics of supported nano-islands by examining the characteristics of MgO/Ag(100) taken as a case study. The combination of experiments and simulations highlights the existence of a small size regime in which, despite the largest adhesion and the smallest mismatch, the islands are the least distorted by the substrate. We assign this unexpected behavior to the enhanced island stiffness which makes the cost of elastic distortion prohibitive compared to the associated gain of MgO-Ag interaction energy. The analysis provides a general framework to predict and/or understand nanoscale effects on interfacial pseudomorphism. These are likely to hold whatever the nature of the deposit and substrate under consideration. It may have far reaching consequences on many properties of supported nano-objects.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Understanding nanoscale effects in oxide/metal heteroepitaxy

Cabailh

Goniakowski

Noguera

et al. 2019

Phys. Rev. Materials

View full text Add to dashboard Cite

show abstract

“…increases (Brisard et al, 2010;Chatzigeorgiou et al, 2015;Duan and Karihaloo, 2007;Duan et al, 2005;Fritzen and Leuschner, 2015;Javili et al, 2013a;Mogilevskaya et al, 2008;Monteiro et al, 2011;Nazarenko et al, 2017;Sharma, 2004;Sharma and Wheeler, 2007;Tian and Rajapakse, 2007;Yvonnet et al, 2008). Comparisons with experiments and atomistic simulations in (Davydov et al, 2013;Elsner et al, 2017;He and Lilley, 2008;Levitas and Samani, 2011;Olsson and Park, 2012;Park and Klein, 2008) justify that the size effects due to interfaces are physically meaningful. Emerging applications of nano-composites demand for better understanding of the interfacial effects on the overall response of heterogeneous media.…”

Section: Introductionmentioning

confidence: 88%

Homogenization accounting for size effects in particulate composites due to general interfaces

Firooz

Chatzigeorgiou

Meraghni

et al. 2019

Mechanics of Materials

View full text Add to dashboard Cite

Establishing analytical approaches to determine the overall size-dependent response of composites embedding general interfaces based on CSA and GSCM, • Providing new bounds and estimates on the macroscopic properties of particulate composites together with the state of the stress and strain in each phase, • Comparison with the literature on the topic and showing an excellent agreement and unification of available estimates, • Introducing the two notions of ultimate bounds and size-dependent bounds.

show abstract

“…Then these methods have been transposed to the study of the decohesion between filler and matrix in polymer nanocompoistes [25,[121][122][123][124][125][126]. On another side, the identification of elastic parameter associated to surface elasticity can be conducted by atomistic simulations [120,[127][128][129][130][131][132][133].…”

Section: Introductionmentioning

confidence: 99%

Multiscale study of influence of interfacial decohesion on piezoresistivity of graphene/polymer nanocomposites

Detrez

Yvonnet

et al. 2019

Modelling Simul. Mater. Sci. Eng.

View full text Add to dashboard Cite

A multiscale strategy is proposed to study the role of interfacial decohesion on the piezoresistive properties of graphene/polymer nanocomposite. A cohesive zone model is identified by atomistic simulations. This cohesive zone model enriches imperfect interfaces, which model graphene sheets, at mesoscale in our continuum mechanical model. This nonlinear mechanical model is used to generate deformed representative volume element to study influence of strain and interfacial decohesion on the conductivity of graphene/polymer nanocomposites. The effective conductivity is studied with an electric continuum model at mesoscale that incorporates the tunneling effect. A conductor-insulator transition is observed for elongations above 2% for graphene volume fraction just above the percolation threshold. The transition appears for an elongation of 8% instead of 2%, when the interfacial decohesion is removed.

show abstract

Surface excess elasticity of gold: Ab initio coefficients and impact on the effective elastic response of nanowires

Cited by 34 publications

References 54 publications

Understanding nanoscale effects in oxide/metal heteroepitaxy

Understanding nanoscale effects in oxide/metal heteroepitaxy

Homogenization accounting for size effects in particulate composites due to general interfaces

Multiscale study of influence of interfacial decohesion on piezoresistivity of graphene/polymer nanocomposites

Contact Info

Product

Resources

About