Self-oscillating gel

Fig. 2.5 Self-oscillating gels based on Ru bipy polymers. (Adapted from [77b])...

An exciting application of coupling to another nonlinear system was demonstrated by Yoshida et al. who created a self-oscillating gel by coupling a pH oscillating reaction with a polymeric gel that expands and contracts with... 

Ciliary Motion Actuator Using Self-Oscillating Gel... 

In these experiments, the volume of the confined gel is constant its main role is to damp hydrodynamical motions that would otherwise perturb the chemical intrinsic patterns. More recently it has been shown experimentally that the coupling of a volume phase transition with a chemical oscillator can generate a self-oscillating gel (i, 4). More precisely, if one of the chemical species taking part in the chemical reaction modifies the threshold for the phase transition, then the time periodic variation of this concentration can generate autonomous swelling-deswelling cycles of the gel even in absence of any external stimuli (5, 6). This device thus provides a novel biomimetic material with potential biomedical and technical applications. 

Fig. 9.9 (a) Plots indicating occurrence of swelling-deswelling for a stimuli responsive vs. a self-oscillating gel. (b) Chemical structure of poly(NIPAAM-co-Ru(bpy)3) BZ gel. Reprinted with permission from [67]. (Copyright 1999 American Chemical Society)... 

Yuan, P., et al. UV pattemable thin film chemistry for shape and functionally versatile self-oscillating gels. Soft Matter 9(4), 1231-1243 (2013)... 

Dayal, P., Kuksenok, O., Balazs, A.C. Directing the behavior of active, self-oscillating gels with light. Macromolecules 47(10), 3231-3242 (2014)... 

FIGURE 5.1.1 Design concept of self-oscillating gel using the Belousov-Zhanotinsky (BZ) reaction. 

Self-Oscillating Gel Conveyers Autonomous Mass Transport Surface Using Peristaltic Motion of the Gels... 

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