Spontaneous formation of chemical motors in simple inorganic systems

Masełko, Jerzy; Borisova, P. A.; Carnahan, Matt; Dreyer, Eric; Devon, Ron; Schmoll, Manuela; Douthat, Daryl A.

doi:10.1007/s10853-005-3926-z

Cited by 24 publications

(22 citation statements)

References 14 publications

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“…Another intriguing observation in these microgarden systems, by a team with Jerzy Maselko and James Pantaleone at the University of Alaska Anchorage, is that the self-assembling tubes extending out of the bead can propel the bead into motion, if the growth point of the tube is pinned to a stationary substratefor example, using impurities or gas bubbles on a glass slide. 4 That is an example of a system in which isothermal chemical reactions create directed large-scale motion through spontaneous symmetry breaking.…”

Section: Box 1 Do-it-yourself Chemical Gardeningmentioning

confidence: 99%

The fertile physics of chemical gardens

Steinbock¹,

Cartwright²,

Barge³

2016

Physics Today

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Section: Box 1 Do-it-yourself Chemical Gardeningmentioning

confidence: 99%

The fertile physics of chemical gardens

Steinbock¹,

Cartwright²,

Barge³

2016

Physics Today

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“…A good example for this prediction is current research on self-healing materials which aims to introduce a typical feature of living matter-the ability to regenerate after damage or injury-into man-made polymer and hybrid materials [5][6][7]. Another example is the creation of self-propelled micro-and nanoparticles capable of transporting cargo over macroscopic distances [8][9][10][11][12]. Important ingredients of these efforts include non-equilibrium conditions, compartmentalization and reaction-transport coupling [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Tubular precipitation structures: materials synthesis under non-equilibrium conditions

Makki

Roszol

Pagano

et al. 2012

Phil. Trans. R. Soc. A.

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Inorganic precipitation reactions are known to self-organize a variety of macroscopic structures, including hollow tubes. We discuss recent advances in this field with an emphasis on experiments similar to 'silica gardens'. These reactions involve metal salts and sodium silicate solution. Reactions triggered from reagent-loaded microbeads can produce tubes with inner radii of down to 3 mm. Distinct wall morphologies are reported. For pump-driven injection, three qualitatively different growth regimes exist. In one of these regimes, tubes assemble around a buoyant jet of reactant solution, which allows the quantitative prediction of the tube radius. Additional topics include relaxation oscillations and the templating of tube growth with pinned gas bubble and mechanical devices. The tube materials and their nano-to-micro architectures are discussed for the cases of silica/Cu(OH) 2 and silica/Zn(OH) 2 /ZnO tubes. The latter case shows photocatalytic activity and photoluminescence.

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“…Such self-propelled chemical entities include biomotors, nanodimers, Au/Pt nanorods, and certain reacting polymers. [15] Our system, however, is unique in the sense that the actual "motor" of the translational motion remains near-stationary, while its fuel reservoir moves by extending a hollow conduit. The microbead velocities and radii are comparable to those of many living cells.…”

mentioning

confidence: 99%