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Title: Biomimetic locomotion on water of a porous natural polymeric composite
Authors: Liakos, Ioannis
Salvagnini, Pietro
Scarpellini, Alice
Carzino, Riccardo
Mele, Elisa
Murino, Vittorio
Athanassiou, Athanassia
Keywords: Self - motors
Bio - locomotion
Bio - mimetics
Marangoni effect
Surface tension gradient
Issue Date: 2016
Publisher: © Wiley
Citation: LIAKOS, I. ...et al., 2016. Biomimetic Locomotion on Water of a Porous Natural Polymeric Composite. Advanced Materials Interfaces, 3 (11): 1500854.
Abstract: Observation of the natural world can provide invaluable information on the mechanisms that semiaquatic living organisms or bacteria use for their self-propulsion. Microvelia, for example, uses wax excreted from its legs to move on water in order to escape from predators or reach the bank of the river. Mimicking such mechanism, few self-propelled materials on water, as camphor, have been previously developed, but weak points like slow locomotion, short movement duration or shape-restrictions still need to be improved. Herein we present a totally green self-assembled porous system, formed by the combination of a natural polymer with an essential oil, that spontaneously moves on water for hours upon expulsion of the oil, with high velocities reaching 15 cm/s. The structural characteristics of the natural polymeric composite are carefully analyzed and associated to its spontaneous movement. Surface tension change experiments are also presented that connect the essential oil release with the locomotion of the porous composite films. This research work opens novel routes towards bio-inspired natural materials that can be used for mimicking and studying the motion of bio-organisms and microorganisms, and for applications such as energy harvesting, aquatic pollution monitoring, drug delivery, to name few.
Description: This is the pre-peer reviewed version of the following article: Biomimetic Locomotion on Water of a Porous Natural Polymeric Composite. Advanced Materials Interfaces, 3 (11), DOI: 10.1002/admi.201500854, which has been published in final form at http://dx.doi.org/10.1002/admi.201500854. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Version: Submitted for publication
DOI: 10.1002/admi.201500854
URI: https://dspace.lboro.ac.uk/2134/20820
Publisher Link: http://dx.doi.org/10.1002/admi.201500854
ISSN: 2196-7350
Appears in Collections:Published Articles (Materials)

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