2011/04/13 by V. Nosenko, G. E. Morfill, Phoebus Rosakis +1 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Composite material #Condensed matter physics #Crystal (programming language) #Dislocation #Dust and Plasma Wave Phenomena #Earthquake Detection and Analysis #Enhanced Data Rates for GSM Evolution #High-pressure geophysics and materials #Materials science #Mechanics #Nucleation #Physics #Plasma #Shear (geology) #Shear stress #Stress (linguistics) #Thermodynamics #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.106.155002
published as Physical Review Letters 106, 155002 (2011) · 5 pages, 4 figures
openalex publication_date 2011/04/13 · arxiv created 2011/05/03 · arxiv updated 2015/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The speed-stress relation for gliding edge dislocations was experimentally measured for the first time. The experimental system used, a two-dimensional plasma crystal, allowed observation of individual dislocations at the "atomistic" level and in real time. At low applied stress dislocations moved subsonically, at higher stress their speed abruptly increased to 1.9 times the speed of shear waves, then slowly grew with stress. There is evidence that immediately after nucleation dislocations can move faster than pressure waves.