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. Author manuscript; available in PMC: 2019 Jan 4.
Published in final edited form as: J Phys Chem Lett. 2018 May 17;9(11):2886–2892. doi: 10.1021/acs.jpclett.8b01191

Figure 3. DIC contrast can be used to identify AuNS orientation.

Figure 3.

(a) DIC images taken from a full 0° to 180° stage rotation of a 2D AuNS. White arrows indicate the polarization of the ordinary and extraordinary beams. (b) Quantified DIC contrast (circles) and the fit to a sin2(α) equation (black line). Inset is the SEM image of the particle aligned to the maximum contrast (α = 65°, red box). The yellow arrow is the particle orientation (θ = 136°) as determined from fit ellipse analysis of the SEM image.