Digital Holographic Microscopy
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EXECUTIVE CORE METHODOLOGY
Evaluating Digital Holographic Microscopy (DHM) for bio-imaging and three-dimensional cellular mapping without chemical dyes.
Digital Holographic Microscopy (DHM) is a quantitative phase imaging technology that has revolutionized biological research and sub-micron diagnostics. Unlike traditional light-field microscopes, which rely on localized chemical dyes to highlight flat cell structures, DHM records cell topography as actual phase-delay structures.
As coherent laser light passes through transparent cell structures, the different thicknesses and internal refractive indices of the cell retard the wavefronts. By merging this phase-delayed object beam with a reference beam on a high-speed CMOS sensor, DHM captures a real-time digital hologram of the cell.
Software reconstruction algorithms translate this phase map into real-time 3D models of living cells. Because it is label-free, scientists can observe cell growth and division continuously without chemical interference, opening new frontiers in pharmacology and pathology.