373 citations · 576 across the 8 of their papers we have counts for
7 papers · 1 filter
New zero Poisson's ratio models
Vladimir Gaal, Varlei Rodrigues, Socrates O. Dantas +2
Most materials exhibit positive Poisson's ratio (PR) values but special structures can also present negative and, even rarer, zero (or close to zero) PR. Null PR structures have re…
Surface Effects on the Mechanical Elongation of AuCu Nanowires: De-alloying and the Formation of Mixed Suspended Atomic Chains
M. J. Lagos, P. A. S. Autreto, J. Bettini +4
We report here an atomistic study of the mechanical deformation of AuxCu(1-x) atomic-size wires (NWs) by means of high resolution transmission electron microscopy (HRTEM) experimen…
Modeling the Auxetic Transition for Carbon Nanotube Sheets
Vitor R. Coluci, Lee J. Hall, Mikhail E. Kozlov +4
A simple model is developed to predict the complex mechanical properties of carbon nanotube sheets (buckypaper) [Hall \textit{et al.}, \textit{Science} \textbf{320} 504 (2008)]. Fa…
Atomistic Simulations of the Mechanical Properties of 'Super' Carbon Nanotubes
Vitor R. Coluci, Nicola M. Pugno, Socrates O. Dantas +2
The mechanical properties of the so-called `super' carbon nanotubes (STs) are investigated using classical molecular dynamics simulations. The STs are built from single walled carb…
On the Formation of Copper Linear Atomic Suspended Chains
F. Sato, A. S. Moreira, J. Bettini +4
We report high resolution transmission electron microscopy and classical molecular dynamics simulation results of mechanically stretching copper nanowires conducting to linear atom…
Nanowires and Suspended Atom Chains from Metal alloys
J. Bettini, F. Sato, P. Z. Coura +3
We present a study of the elongation and rupture of gold-silver alloy nanowires. Atomistic details of the evolution were derived from time-resolved atomic resolution transmission e…