40 research outputs found
The effectiveness of calcitonin on chronic back pain and daily activities in postmenopausal women with osteoporosis
Robust time-consistent mean–variance portfolio selection problem with multivariate stochastic volatility
Comparing Modeling Predictions of Aluminum Edge Dislocations: Semidiscrete Variational Peierls–Nabarro Versus Atomistics
Dislocation-pipe diffusion in nitride superlattices observed in direct atomic resolution
Effect of Point Defects on the Tensile and Thermal Characteristics of Nickel–Aluminum Nanowire through Molecular Dynamics
Tendon‐derived extracellular matrix induces mesenchymal stem cell tenogenesis via an integrin/transforming growth factor‐β crosstalk‐mediated mechanism
Size effects of lamellar twins on the strength and deformation mechanisms of nanocrystalline hcp cobalt
Three-dimensional imaging of dislocation propagation during crystal growth and dissolution
Atomic level defects such as dislocations play key roles in determining the macroscopic properties of crystalline materials. Their effects range from increased chemical reactivity to enhanced mechanical properties. Dislocations have been widely studied using traditional techniques such as X-ray diffraction (XRD) and optical imaging. Recent advances have enabled atomic force microscopy (AFM) to study single dislocations in 2D, while transmission electron microscopy (TEM) can now visualize strain fields in 3D with near atomic resolution. However, these techniques cannot offer 3D imaging of the formation or movement of dislocations during dynamic processes. Here, we describe how Bragg Coherent Diffraction Imaging (BCDI) can be used to visualize in 3D, the entire network of dislocations present within an individual calcite crystal during repeated growth and dissolution cycles. These investigations demonstrate the potential of BCDI for studying the mechanisms underlying the response of crystalline materials to external stimuli