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. 2013 Aug 2;8(8):e70590. doi: 10.1371/journal.pone.0070590

Figure 1. Validation of optical-tweezers-based microrheology results with measurements on PEO.

Figure 1

(A) Elastic and (B) viscous moduli of 6.7 wt% PEO obtained using optical tweezers (crosses), compared with bulk rheology (open symbols) and microrheology via diffusing wave spectroscopy (DWS; solid line) from reference [46]. Crosses indicate the mean values over 5 independent measurements, and error bars represent the standard error of the mean. The inset shows a schematic of a probe particle confined by an optical trap inside a polymeric solution.