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Differential dynamic microscopy microrheology of soft materials: A tracking-free determination of the frequency-dependent loss and storage moduli

Edera, Paolo ; Bergamini, Davide ; Trappe, Véronique ; Giavazzi, Fabio ; Cerbino, Roberto

In: Physical Review Materials, 2017, vol. 1, no. 7, p. 073804

Particle-tracking microrheology (PT-μr) exploits the thermal motion of embedded particles to probe the local mechanical properties of soft materials. Despite its appealing conceptual simplicity, PT-μr requires calibration procedures and operating assumptions that constitute a practical barrier to its wider application. Here we demonstrate differential dynamic microscopy microrheology...