B. We-would-like-to-thank-clément-levard, P. Bonelli, D. Yuan, and . Kang, Nicolas Arancibia- Miranda for all discussions about imogolites which we always appreciate. Special thanks to Rémy Brossard and Florent Malloggi for interesting discussions on rolling of polymer bilayers leading to mutual inspiration and to David Carrière whose ongoing work on up-to-date nucleation theory may well inspire this research area soon. This research has been possible thanks to the PRODIGE grant of the Labex NanoSaclay and PALM (reference: ANR-10-LABX-0035) and also with the funding of the DIM Nano-K of the Region Paris

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