Figure1: Concepts of milli-SRs and a comparison between bubble casting and mini bubble casting. (IMAGE)

Science China Press

Figure1: Concepts of milli-SRs and a comparison between bubble casting and mini bubble casting.

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(a) Milli-SRs perform biomedical tasks in narrow human cavities—like navigating complex orifices, removing foreign objects, and entering tiny vessels. (b) Bubble casting struggles with milli-SRs due to bubble fragments. (c) Mini bubble casting fixes this: The enhanced silicone resists interfacial tension, keeps bubbles stable, and enables reliable milli-SR fabrication.

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