2002/07/24 by Fabrice Célarié, F. Celarie, S. Prades +10 · 29 citations
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Amorphous solid #Atomic force microscopy #Atomic units #Chemistry #Coalescence (physics) #Composite material #Conductive atomic force microscopy #Crystallography #Fracture (geology) #Fracture mechanics #Glass properties and applications #Laser Material Processing Techniques #Length scale #Materials science #Mechanics #Nanometre #Nanoscopic scale #Nanotechnology #Nanotribology #Nucleation #Physics #Surface Roughness and Optical Measurements #Thermodynamics #cond-mat.mtrl-sci #cond-mat.stat-mech
paper · pdf · doi:10.1016/s0169-4332(03)00029-1
published in Applied Surface Science 212-213, 92-96 (Elsevier BV) · 6 pages, 5 figures, submitted to Applied surface Science
arxiv created 2002/07/24 · openalex publication_date 2003/04/04 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have studied the low speed fracture regime for different glassy materials with variable but controlled length scales of heterogeneity in a carefully mastered surrounding atmosphere. By using optical and atomic force (AFM) microscopy techniques we tracked in real-time the crack tip propagation at the nanometer scale on a wide velocity range (1 mm/s and 0.1 nm/s and below). The influence of the heterogeneities on this velocity is presented and discussed. Our experiments revealed also -for the first time- that the crack advance proceeds through nucleation, growth and coalescence of nanometric damage cavities inside the amorphous phase, which generate large velocity fluctuations. The implications of the existence of such a nano-ductile fracture mode in glass are discussed.