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. 2022 Mar 12;20:126. doi: 10.1186/s12951-022-01315-x

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 4 — A The illustration of interfacial dynamic migration mechanism. a The formation process of the streamlined mesoporous silica nanoparticles. b Schematic illustration for the curvature regulation of the streamlined mesoporous nanoparticles by using surfactants with different chain lengths. c–e TEM images of the streamlined silica nanoparticles with different curvatures. All scale bars are 50 nm. B Streamlined hollow mesoporous silica nanotadpoles. a, c, d TEM images with different magnifications, b SEM image, and e structural model of the mesoporous silica nanotadpoles prepared by the interfacial dynamic migration strategy. f Element mapping of the mesoporous silica nanotadpoles. Scale bars represent 500 nm in panels a and b, 100 nm in panels c, d, and h. Insets in panel a: digital photo of the tadpoles (upper right corner) and the corresponding distribution histograms of the body length of the mesoporous silica nanotadpoles (lower right corner).

Reproduced with permission from Ref [235]. Copyright 2021, American Chemical Society