This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1063/1.4906823 in citations.
Please use the identifier: http://hdl.handle.net/2128/19007 in citations.
Catalytic microrotor driven by geometrical asymmetry
Catalytic microrotor driven by geometrical asymmetry
An asymmetric gear with homogeneous surface properties is, here, presented as a prototype to fabricate catalytic microrotors. The driving torque arises from the diffusiophoretic effect induced by the concentration gradients generated by catalytic chemical reactions at the gear surface. This torque p...
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Personal Name(s): | Yang, Mingcheng (Corresponding Author) |
---|---|
Ripoll, Marisol / Chen, Ke | |
Contributing Institute: |
Theorie der Weichen Materie und Biophysik; IAS-2 Theorie der Weichen Materie und Biophysik; ICS-2 |
Published in: | The @journal of chemical physics, 142 (2015) 5, S. 054902 |
Imprint: |
Melville, NY
American Institute of Physics
2015
|
DOI: |
10.1063/1.4906823 |
PubMed ID: |
25662663 |
Document Type: |
Journal Article |
Research Program: |
Functional Macromolecules and Complexes |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/19007 in citations.
An asymmetric gear with homogeneous surface properties is, here, presented as a prototype to fabricate catalytic microrotors. The driving torque arises from the diffusiophoretic effect induced by the concentration gradients generated by catalytic chemical reactions at the gear surface. This torque produces a spontaneous and unidirectional rotation of the asymmetric gear. By means of mesoscopic simulations, we prove and characterize this scenario. The gear rotational velocity is determined by the gear-solvent interactions, the gear geometry, the solvent viscosity, and the catalytic reaction ratio. Our work presents a simple way to design self-propelled microrotors, alternative to existing catalytic bi-component, or thermophoretic ones. |