Mechanical stability of nanoporous metals with small ligament sizes

Coarsening of nanoporous Au: Relationship between structure and mechanical properties

“…Experimental evidence demonstrates that the relative density of NP metals deeply affects their elastic and plastic deformation behavior [10][11][12][13][14][15]. Similar to the case of mesoporous foams, Young's modulus and yield strength undergo a monotonic decrease as porosity increases [10][11][12][13][14][15].…”

“…Similar to the case of mesoporous foams, Young's modulus and yield strength undergo a monotonic decrease as porosity increases [10][11][12][13][14][15]. The observed behavior can be intuitively explained by invoking the reduction of material cohesion with the removal of an increasing fraction of solid [16,17].…”

Bulk Nanoporous Metal for Actuation

“…[15] Computer simulation confirms this suggestion. [49,50] Consider the strain that results from the stresses of Equation 5. Hooke's law for a solid with isotropic elasticity, characterized by Young's modulus Y and Poisson number n, suggests: [51] …”

Surface effects on the radiation response of nanoporous Au foams

“…Stacking fault tetrahedra are formed when 15 np-Au foams are irradiated at high dose-rate, but they do not seem to be formed in np-Au at low 16 dose-rate irradiation. A model is proposed to explain the dose-rate dependent defect accumulation 17 based on these results. V C 2012 American Institute of Physics.…”