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Alignment of gold nanorods incorporated into bulk polymers and imprinted at polymer surfaces by mechanical stretching is presented. Alignment of aspect-ratio-4.4 and -16 nanorods along the stretch direction is determined using polarized absorption spectroscopy, Rayleigh light scattering, and AFM (see Figure). Polymer film stretching is shown to be a simple approach to controlling nanorod orientation on surfaces and within bulk polymeric materials.
Murphy et al. (2005) studied this question.