Oscillating Reactions Meet Polymers at Interfaces

Osypova, Alina; Dübner, Matthias; Panzarasa, Guido

doi:10.3390/ma13132957

Cited by 12 publications

(8 citation statements)

References 95 publications

(129 reference statements)

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“…Most candidate soft materials only exhibited periodic behavior when exposed to variations in the constant energy input (e.g., from changes in illumination, heat, humidity, or pH) (7)(8)(9)(10)(11)(12). The rare exceptions include soft materials that incorporate one of three intrinsically self-oscillatory chemical reactions, e.g., self-oscillating gels driven by the Belouzov-Zhabotinsky reaction (13)(14)(15)(16)(17). Herein, we use computational modeling to design chemically driven, flexible micro-to millimeter-sized sheets powered by nonoscillatory chemical reactions that form self-oscillating, shape-changing systems in solution.…”

mentioning

confidence: 99%

Chemical pumps and flexible sheets spontaneously form self-regulating oscillators in solution

Manna

Shklyaev

Balazs

2021

Proc. Natl. Acad. Sci. U.S.A.

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The synchronization of self-oscillating systems is vital to various biological functions, from the coordinated contraction of heart muscle to the self-organization of slime molds. Through modeling, we design bioinspired materials systems that spontaneously form shape-changing self-oscillators, which communicate to synchronize both their temporal and spatial behavior. Here, catalytic reactions at the bottom of a fluid-filled chamber and on mobile, flexible sheets generate the energy to “pump” the surrounding fluid, which also transports the immersed sheets. The sheets exert a force on the fluid that modifies the flow, which in turn affects the shape and movement of the flexible sheets. This feedback enables a single coated (active) and even an uncoated (passive) sheet to undergo self-oscillation, displaying different oscillatory modes with increases in the catalytic reaction rate. Two sheets (active or passive) introduce excluded volume, steric interactions. This distinctive combination of the hydrodynamic, fluid–structure, and steric interactions causes the sheets to form coupled oscillators, whose motion is synchronized in time and space. We develop a heuristic model that rationalizes this behavior. These coupled self-oscillators exhibit rich and tunable phase dynamics, which depends on the sheets’ initial placement, coverage by catalyst and relative size. Moreover, through variations in the reactant concentration, the system can switch between the different oscillatory modes. This breadth of dynamic behavior expands the functionality of the coupled oscillators, enabling soft robots to display a variety of self-sustained, self-regulating moves.

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mentioning

confidence: 99%

Chemical pumps and flexible sheets spontaneously form self-regulating oscillators in solution

Manna

Shklyaev

Balazs

2021

Proc. Natl. Acad. Sci. U.S.A.

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“…The design of artificial dissipative self-assembly systems is a way to mimic these processes and, as such, is one of the most attractive and challenging fields of research in contemporary materials science [33]. Of the different clock reactions that have been applied to colloidal and soft materials to make programmable autonomous dissipative systems [34][35][36][37][38][39][40][41][42], here the focus will be given to iodine-based ones.…”

Section: Applications Of Iodine Clocks To Materials Systemsmentioning

confidence: 99%

Iodine clocks: applications and untapped opportunities in materials science

Panzarasa

2022

Reac Kinet Mech Cat

Self Cite

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Iodine clocks are fascinating nonlinear chemical systems with a glorious past and a promising future. The dynamic removal of iodine from these systems by different means can have important consequences for their reaction dynamics, and could be exploited for time-controlled autonomous dissipative self-assembly. Here, the untapped opportunities offered by iodine clocks for materials science, especially for the time-programming of supramolecular assembly and sol–gel transition, are reviewed and discussed with the hope of arousing the interest on the subject and stimulating new research directions.

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“…In order to verify the hypothesis in this contribution based on the influence of gravitational fields on the formation of structures among quantum particles we propose to study more easier experimental projects: measurement of the specific heat of solids, the critical temperature of superconductors, the chemical and biological periodic patterns -Liesegang rings (e.g., [56]- [59]), Belousov-Zhabotinsky waves (e.g., [60]- [62]), chemical clocks (e.g., [63]- [66]).…”

Section: Quantum Physics and Quantum Chemistry In Spacementioning

confidence: 99%

A New Interpretation of Contributions Presented at the Solvay Conference 1911. Can We Falsify the “Geocentric” Foundations of Quantum Mechanics in the Solar System?

Stávek¹

2021

EJPHYSICS

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We have studied the contributions and presentations published in the Proceedings of the Solvay Conference 1911. Based on the lecture of Ernest Solvay on the “gravito-matérialitique” we can distinguish two features of the Earth´s gravitational field – 1. “gravité réelle” described by the Newton´s gravitational law and 2. “gravité potentielle” acting as an agent of the self-organization on quantum particles and creating structures described by the Planck constant hEARTH. From the discussions followed after the presentations of Walther Nernst and Albert Einstein we interpreted the Nernst- Lindemann Formula for the specific heat of solids using the comment of Heike Kamerlingh Onnes (the discoverer of the superconductivity) as two transverse and one longitudinal oscillations of phonon in the surroundings at temperature T. In order to falsify this “geocentric” model of foundations of quantum mechanics in the spirit of Karl Popper we propose to initiate the CURE Project (China – USA – Russia – European Union) (cure = to solve a problem) in order to build quantum laboratories on different orbits around the Earth, on the surface of the Moon and Mars, and in the Lagrange points of the system the Earth – Moon and the Earth – Sun to get new experimental data for the specific heat of solids, the critical temperatures of superconductors, chemical and physical self-organized reactions (Liesegang rings, Belousov- Zhabotinsky waves, chemical clocks, Bose-Einstein condensates, de Broglie waves, etc.). There is space enough for all participants on this CURE Project to collect new valuable data describing this “hidden variable” presented by Ernest Solvay in his forgotten lecture in 1911.

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Oscillating Reactions Meet Polymers at Interfaces

Cited by 12 publications

References 95 publications

Chemical pumps and flexible sheets spontaneously form self-regulating oscillators in solution

Chemical pumps and flexible sheets spontaneously form self-regulating oscillators in solution

Iodine clocks: applications and untapped opportunities in materials science

A New Interpretation of Contributions Presented at the Solvay Conference 1911. Can We Falsify the “Geocentric” Foundations of Quantum Mechanics in the Solar System?

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