fig2

Figure 2. Oscillating hydrogel collectives based on BZ reactions. (A) The hydrogels exhibit different oscillating behaviors with different stirring speeds. Reproduced with permission from ref.^[28]. Copyright 2009, AAAS. (B) Oscillating hydrogels with changing sizes. (C) The oscillating hydrogels exhibit different size thresholds in the isolated form and collectives. Reproduced with permission from ref.^[25] under the CC BY-NC-ND license. Copyright 2024, The Authors, published by PNAS.