Fig. 2: Optical properties of MPs under Bx. | Nature Communications

Fig. 2: Optical properties of MPs under Bx.

From: Dynamic birefringence and chirality of magnetically controllable assemblies of anisotropic plasmonic nanoparticles in dispersion

Fig. 2

a Schematics depicting plasmonic excitation under unpolarized light, P∥ and P⊥. Black and red arrows indicate the direction of light polarization and applied magnetic field, respectively. Photographs and extinction spectra (measured: solid lines; simulated: dotted lines) of MPs incorporating AuNRs with an aspect ratio of 2.3 under unpolarized light (b), P∥ (c), and P⊥ (d). The experimental extinction spectra appear broader than the simulated spectra due to ensemble averaging over MPs with a size distribution. Extinction spectra and photographs of MPs containing AuNRs with varying aspect ratios under unpolarized light (e), P∥ (f), and P⊥ (g). The applied magnetic field strength was measured to be 18 mT. Source data are provided as a Source Data file.

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