Optimization of bio-inspired multi-segment IPMC cilia
Optimization of bio-inspired multi-segment IPMC cilia
In nature, unidirectional fluid flows are often induced at micro-scales by cilia and related organelles. A controllable unidirectional flow is beneficial at these scales for a range of novel robotic and medical applications, whether the flow is used for propulsion (e.g. swimming robots) or mass transfer (e.g. prosthetic trachea). Ionic Polymer Metal Composites(IPMCs) are innovative smart materials that can be used directly as active propulsive surfaces rather than a traditional motor and propeller. IPMC actuators with two segmented electrodes that attempt to mimic the motion of cilia-like organelles have been realized. In this paper the optimization of these actuators towards producing unidirectional flows is described. A parametric study of the kinematic and hydrodynamic effect of modulating the drive signal has been conducted. As with eukaryotic cilia and flagella found in mammals, the segmented IPMC actuator can generate both flexural (asymmetric) and undulatory (symmetric) motions from the same physical structure. The motion is controlled by applying profiles of driving frequencies and phase differences. Kinematic analysis using a camera and laser displacement sensor has been used to measure and classify different motion types. The hydrodynamic forces produced by each motion type have been estimated using particle-tracking flow visualization. This allows drive signal profiles to be ranked in terms of fluid flow momentum transfer and directionality. Using the results of the parametric study, the IPMC motion is optimized towards producing unidirectional flow via repeatable cilia-inspired motion.
Ionic Polymer Metal Composite, artificial cilia, biomimetics, multi-segment IPMC, Particle Image Velocimetry
Sareha, S.
f889dc46-29a5-4a08-bd5b-15e3640e562a
Conn, A. T.
4cf1d5ce-a269-4fe9-9a41-044ddb150140
Rossiter, J. M.
6535477c-eb61-4312-9cd6-ea174eef94a0
Ieropoulos, I.
6c580270-3e08-430a-9f49-7fbe869daf13
Walters, P.
f3bbc235-854d-4759-8641-bce6c54a4a7f
2010
Sareha, S.
f889dc46-29a5-4a08-bd5b-15e3640e562a
Conn, A. T.
4cf1d5ce-a269-4fe9-9a41-044ddb150140
Rossiter, J. M.
6535477c-eb61-4312-9cd6-ea174eef94a0
Ieropoulos, I.
6c580270-3e08-430a-9f49-7fbe869daf13
Walters, P.
f3bbc235-854d-4759-8641-bce6c54a4a7f
Sareha, S., Conn, A. T., Rossiter, J. M., Ieropoulos, I. and Walters, P.
(2010)
Optimization of bio-inspired multi-segment IPMC cilia.
SPIE Smart Structures and Materials + Nondestructive Evaluation and<br/>Health Monitoring, 2010, San Diego, California, United States, San Diego, United States.
09 - 12 Apr 2010.
12 pp
.
(doi:10.1117/12.847552).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In nature, unidirectional fluid flows are often induced at micro-scales by cilia and related organelles. A controllable unidirectional flow is beneficial at these scales for a range of novel robotic and medical applications, whether the flow is used for propulsion (e.g. swimming robots) or mass transfer (e.g. prosthetic trachea). Ionic Polymer Metal Composites(IPMCs) are innovative smart materials that can be used directly as active propulsive surfaces rather than a traditional motor and propeller. IPMC actuators with two segmented electrodes that attempt to mimic the motion of cilia-like organelles have been realized. In this paper the optimization of these actuators towards producing unidirectional flows is described. A parametric study of the kinematic and hydrodynamic effect of modulating the drive signal has been conducted. As with eukaryotic cilia and flagella found in mammals, the segmented IPMC actuator can generate both flexural (asymmetric) and undulatory (symmetric) motions from the same physical structure. The motion is controlled by applying profiles of driving frequencies and phase differences. Kinematic analysis using a camera and laser displacement sensor has been used to measure and classify different motion types. The hydrodynamic forces produced by each motion type have been estimated using particle-tracking flow visualization. This allows drive signal profiles to be ranked in terms of fluid flow momentum transfer and directionality. Using the results of the parametric study, the IPMC motion is optimized towards producing unidirectional flow via repeatable cilia-inspired motion.
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Published date: 2010
Venue - Dates:
SPIE Smart Structures and Materials + Nondestructive Evaluation and<br/>Health Monitoring, 2010, San Diego, California, United States, San Diego, United States, 2010-04-09 - 2010-04-12
Keywords:
Ionic Polymer Metal Composite, artificial cilia, biomimetics, multi-segment IPMC, Particle Image Velocimetry
Identifiers
Local EPrints ID: 454650
URI: http://eprints.soton.ac.uk/id/eprint/454650
PURE UUID: fe3482ab-f86a-46ff-87d0-88fcdb2c8d2c
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Date deposited: 17 Feb 2022 17:50
Last modified: 17 Mar 2024 04:10
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Contributors
Author:
S. Sareha
Author:
A. T. Conn
Author:
J. M. Rossiter
Author:
P. Walters
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