“…Specifically, microcantilever bending has been used to determine hydrogen embrittlement with respect to hydrogen-induced cracking (Deng et al, 2017;Deng and Barnoush, 2018); quantify the fracture toughness and dislocation structures of brittle materials through site-specific investigation in thin films, single crystals, and grain boundaries (Iqbal et al, 2012;Zou et al, 2017;Alfreider et al, 2018;Ast et al, 2018;Ast et al, 2019); and probe the mechanical impact on ion-irradiated damage layers (Armstrong et al, 2015;Leide et al, 2020;Yano et al, 2020). HeIC initiation and propagation can also be investigated using site-specific micromechanical tests, where small-scale heterogeneity of structures and properties are prevalent, analogous to the irradiated materials (Diaz De La Rubla et al, 2000;Byun et al, 2006;Cui et al, 2018a), representing a manifestation of the localized mechanical degradation with an underlying irradiation-induced microstructure that is present at even finer scale such as clusters and channels (Patra and McDowell, 2013;Cui et al, 2018b;Cui et al, 2018c;Wharry et al, 2019).…”