Abstract
Nanomaterials Block-copolymer micelles generally have been used in solution, for applications such as drug delivery. Surface assembly methods that work with other nanosized objects that use electric or magnetic fields or shear tend to be inefficient with these materials. Gould et al. show that optical tweezers can be used to position cylindrical block copolymer micelles on a glass substrate. The micelles have a polyferrocenylsilane core with a high refractive index that enables optical manipulation. Total internal reflection fluorescence spectroscopy of a dye trapped in the poly(dimethylsiloxane) corona enabled positioning and orientation of the micelles on the surface. Arrays consisting of 100 objects were deposited in 10 minutes in a process that could be automated using dynamic holographic methods. ACS Nano 10.1021/acsnano.9b00342 (2019).
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