Electro-optics of confined systems Cazorla del Águila, Ana Martín Martín, Sergio Delgado Mora, Ángel Vicente Jiménez Olivares, María Luisa Confinement effects Electric birefringence Electro-orientation Supplementary material related to this article can be found online at https://doi.org/10.1016 /j.jcis.2023.11.180 Confinement in microenvironments occurs in many natural systems and technological applications. However, little is known about the behaviour of the immersed nanoparticles. In this work we show that their diffusion, electro-orientation and electric field induced polarization can be determined through electric birefringence experiments. We analyze aqueous dispersions of silver nanowires and clay particles confined inside microdroplets. We have observed that confinement reduces the amount of particles that can be oriented by the external electric field. However, the polarizability of the oriented particles is not affected by the presence of the oil/water boundary, and it is the same as in unbounded media, which agrees with the fact that the electric polarization and related phenomena are short-ranged. 2024-05-06T10:44:18Z 2024-05-06T10:44:18Z 2023-12-05 journal article A. Cazorla, S. Martín-Martín, Á.V. Delgado et al. Journal of Colloid and Interface Science 658 (2024) 52–60 [https://doi.org/10.1016/j.jcis.2023.11.180] https://hdl.handle.net/10481/91437 10.1016/j.jcis.2023.11.180 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier