Another lesson from plants: the forward osmosis-based actuator.

Osmotic actuation is a ubiquitous plant-inspired actuation strategy that has a very low power consumption but is capable of generating effective movements in a wide variety of environmental conditions. In light of these features, we aimed to develop a novel, low-power-consumption actuator that is ca...

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Main Authors: Edoardo Sinibaldi, Alfredo Argiolas, Gian Luigi Puleo, Barbara Mazzolai
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4097062?pdf=render
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author Edoardo Sinibaldi
Alfredo Argiolas
Gian Luigi Puleo
Barbara Mazzolai
author_facet Edoardo Sinibaldi
Alfredo Argiolas
Gian Luigi Puleo
Barbara Mazzolai
author_sort Edoardo Sinibaldi
collection DOAJ
description Osmotic actuation is a ubiquitous plant-inspired actuation strategy that has a very low power consumption but is capable of generating effective movements in a wide variety of environmental conditions. In light of these features, we aimed to develop a novel, low-power-consumption actuator that is capable of generating suitable forces during a characteristic actuation time on the order of a few minutes. Based on the analysis of plant movements and on osmotic actuation modeling, we designed and fabricated a forward osmosis-based actuator with a typical size of 10 mm and a characteristic time of 2-5 minutes. To the best of our knowledge, this is the fastest osmotic actuator developed so far. Moreover, the achieved timescale can be compared to that of a typical plant cell, thanks to the integrated strategy that we pursued by concurrently addressing and solving design and material issues, as paradigmatically explained by the bioinspired approach. Our osmotic actuator produces forces above 20 N, while containing the power consumption (on the order of 1 mW). Furthermore, based on the agreement between model predictions and experimental observations, we also discuss the actuator performance (including power consumption, maximum force, energy density and thermodynamic efficiency) in relation to existing actuation technologies. In light of the achievements of the present study, the proposed osmotic actuator holds potential for effective exploitation in bioinspired robotics systems.
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spelling doaj.art-fe23d2767b3d4c1283d49cb7318eaed22022-12-22T02:59:58ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0197e10246110.1371/journal.pone.0102461Another lesson from plants: the forward osmosis-based actuator.Edoardo SinibaldiAlfredo ArgiolasGian Luigi PuleoBarbara MazzolaiOsmotic actuation is a ubiquitous plant-inspired actuation strategy that has a very low power consumption but is capable of generating effective movements in a wide variety of environmental conditions. In light of these features, we aimed to develop a novel, low-power-consumption actuator that is capable of generating suitable forces during a characteristic actuation time on the order of a few minutes. Based on the analysis of plant movements and on osmotic actuation modeling, we designed and fabricated a forward osmosis-based actuator with a typical size of 10 mm and a characteristic time of 2-5 minutes. To the best of our knowledge, this is the fastest osmotic actuator developed so far. Moreover, the achieved timescale can be compared to that of a typical plant cell, thanks to the integrated strategy that we pursued by concurrently addressing and solving design and material issues, as paradigmatically explained by the bioinspired approach. Our osmotic actuator produces forces above 20 N, while containing the power consumption (on the order of 1 mW). Furthermore, based on the agreement between model predictions and experimental observations, we also discuss the actuator performance (including power consumption, maximum force, energy density and thermodynamic efficiency) in relation to existing actuation technologies. In light of the achievements of the present study, the proposed osmotic actuator holds potential for effective exploitation in bioinspired robotics systems.http://europepmc.org/articles/PMC4097062?pdf=render
spellingShingle Edoardo Sinibaldi
Alfredo Argiolas
Gian Luigi Puleo
Barbara Mazzolai
Another lesson from plants: the forward osmosis-based actuator.
PLoS ONE
title Another lesson from plants: the forward osmosis-based actuator.
title_full Another lesson from plants: the forward osmosis-based actuator.
title_fullStr Another lesson from plants: the forward osmosis-based actuator.
title_full_unstemmed Another lesson from plants: the forward osmosis-based actuator.
title_short Another lesson from plants: the forward osmosis-based actuator.
title_sort another lesson from plants the forward osmosis based actuator
url http://europepmc.org/articles/PMC4097062?pdf=render
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