Abstract

Improving mechanical properties of low-density nanoporous solids has been a long standing challenge. Here, we study how alpha particle bombardment and thermal annealing can be used to improve mechanical properties of nanoporous silica aerogels analysed by depth-sensing nanoindentation. Data suggest that light-ion irradiation creates non-melting thermal spikes in unconstrained nanoligaments of the aerogel, resulting in improved ligament connectivity.

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