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. Author manuscript; available in PMC: 2022 Nov 1.
Published in final edited form as: Adv Mater. 2021 Jul 26;33(46):e2006600. doi: 10.1002/adma.202006600

Figure 5. pH responsive MAMs.

Figure 5.

a) A chip designed with polymer microstructures that is surrounded by a responsive hydrogel matrix. Micropillars on the chip deform in response to pH changes sensed by the responsive hydrogel, driving the actuation mechanism. Reproduced with permission[69b]. Copyright 2011, Wiley-VCH. b) DNA hydrogel-based MAMs that have shape memory function in respond to different pH conditions. Decreased pH causes restructuring of the DNA base paring, resulting in deformation of the bulk gel. c) This effect is demonstrated to be highly reversible and repeatable. Reproduced with permission[75b]. Copyright 2015, Wiley-VCH.