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Entropy 2010, 12(11), 2308-2332; doi:10.3390/e12112308
Review

Autonomously Moving Colloidal Objects that Resemble Living Matter

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Received: 25 September 2010 / Revised: 19 October 2010 / Accepted: 7 November 2010 / Published: 16 November 2010
(This article belongs to the Special Issue Emergence in Chemical Systems)
Download PDF [591 KB, 24 February 2015; original version 24 February 2015]

Abstract

The design of autonomously moving objects that resemble living matter is an excellent research topic that may develop into various applications of functional motion. Autonomous motion can demonstrate numerous significant characteristics such as transduction of chemical potential into work without heat, chemosensitive motion, chemotactic and phototactic motions, and pulse-like motion with periodicities responding to the chemical environment. Sustainable motion can be realized with an open system that exchanges heat and matter across its interface. Hence the autonomously moving object has a colloidal scale with a large specific area. This article reviews several examples of systems with such characteristics that have been studied, focusing on chemical systems containing amphiphilic molecules.
Keywords: autonomous motion; colloidal objects; nonlinear dynamics; chemomechanical energy conversion autonomous motion; colloidal objects; nonlinear dynamics; chemomechanical energy conversion
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Shioi, A.; Ban, T.; Morimune, Y. Autonomously Moving Colloidal Objects that Resemble Living Matter. Entropy 2010, 12, 2308-2332.

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