Dynamic speckle holography: A highly effective optical technique that combines imaging and scattering

Researchers at Harvard University and China University of Petroleum recently developed dynamic speckle holography (DSH), a new technique to measure three-dimensional (3D) maps of displacements that combines imaging and scattering approaches. This technique, presented in a paper published in Physical Review Letters, can detect displacements as small as 10 nanometers over several centimeters, thus significantly outperforming conventional imaging techniques.

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