Calcite dissolution rate spectra measured by <i>in situ</i> digital holographic microscopy.

ABSTRACT: Digital holographic microscopy in reflection mode is used to track in situ, real-time nanoscale topography evolution of cleaved (104) calcite surfaces exposed to flowing or static deionized water. The method captures full-field holograms of the surface at frame rates of up to 12.5 s^-1. Numerical reconstruction provides 3D surface topography with vertical resolution of a few nanometers and enables measurement of time-dependent local dissolution fluxes. A statistical distribution, or spectrum, of dissolution rates is generated by sampling multiple area domains on multiple crystals. The data show, as has been demonstrated by Fischer et al. (2012), that dissolution is most fully described by a rate spectrum, although the modal dissolution rate agrees well with published mean

SUBMITTER: Brand AS 

PROVIDER: S-EPMC5590660 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature