2018/01/24 by Christophe Brouzet, Nitesh Mittal, Brouzet, Christophe +6
Chemistry · Engineering · Physics and Astronomy · #Advanced Polymer Synthesis and Characterization #Advanced Theoretical and Applied Studies in Material Sciences and Geometry #FOS: Physical sciences #Soft Condensed Matter (cond-mat.soft) #Surfactants and Colloidal Systems #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.1801.07976
6 pages, 4 figures, supplemental information
arxiv created 2018/01/24 · openalex publication_date 2018/01/24 · arxiv updated 2018/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Successful assembly of suspended nanoscale rod-like particles depends on fundamental phenomena controlling rotational and translational diffusion. Despite the significant developments in fluidic fabrication of nanostructured materials, the ability to quantify the dynamics in processing systems remains challenging. Here we demonstrate an experimental method for characterization of the orientation dynamics of nanorod suspensions in assembly flows using birefringence relaxation. The methodology is illustrated using nanocelluloses (cellulose nanocrystals and nanofibrils) as model systems, where the coupling of rotational diffusion coefficients to particle size distributions as well as flow-induced orientation mechanisms are elucidated. Our observations advance the knowledge on key fundamental nanoscale mechanisms governing the dynamics of nanotubes and nanorods allowing bottom-up assembly into hierarchical superstructures.