Digital holographic microscopy as a new technique for quantitative measurement of microstructural corrosion in austenitic stainless steel

Microsphere-Assisted Digital Holographic Microscopy Integrated with On-Line Thermal Lens Spectrometry for 3d Imaging and Enhanced Photothermal Detection

“…Dealing with Fourier space in ASP enables applying proper filtering to separate out the unwanted portions or to smooth the reconstructed information. In 28,44 we have explain the details of the reconstruction approach and its possibility to provide 3D imaging and tracking information of multiple micro-objects from the recorded holograms. Once the complex amplitude at the image plane, U(x, y; d) is extracted, the intensity of the image (I), as well as its phase (φ ), can be computed:…”

Digital holographic microscopy of spiropyran‐based dynamic materials

“…DHM is a noncontact, nondestructive and nonscanning technique for quantitative phase imaging, therefore, suitable for retrieving the morphology of biological samples and surface topography of reflective ones. 42 We have already applied DHM for 3D visualisation of myelin figures and their dynamics under thermal gradients, 43 changes in their environmental humidity, 44 studying microstructural surface characterisation, 45 evaluation of intergranular corrosion of stainless steel, 46,47 microparticle sedimentation, 48 and 3D characterisation of nanocomposites. 39,49 In DHM, phase information of an object is preserved through recording the interference between a laser beam passing through the object, so-called object beam and a beam from the same laser source, so-called reference beam, on a digital sensor.…”

Digital Holographic Microscopy of Spiropyran-Based Dynamic Materials ​

“…DHM is a non-contact, non-destructive, and non-scanning technique for quantitative phase imaging, therefore, suitable for retrieving the morphology of biological samples, and surface topography of reflective ones 44 . We have already applied DHM for 3D visualization of myelin figures and their dynamics under thermal gradients 45 , changes in their environmental humidity 46 , studying microstructural surface characterization 47 , evaluation of intergranular corrosion of stainless steel 48,49 , and for 3D characterization of nanocomposites 41 .…”