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EXPERIMENTAL STUDIES OF THE ACTUATION OF CARBON NANOTUBE-BASED MATERIALS

Geier, Sebastian and Mahrholz, Thorsten and Wierach, Peter and Sinapius, Michael (2019) EXPERIMENTAL STUDIES OF THE ACTUATION OF CARBON NANOTUBE-BASED MATERIALS. American Society of Mechanical Engineering. ASME 2019 Conference on Smart Materials, and Intelligent Systems SMASIS2019, 09-11. Sep. 2019, Louisville, KY, USA.

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Abstract

Carbon nanotubes (CNTs) show an active behavior when they are positioned within an electric field, immersed into an electrolyte and charged. Several explanations are given, ranging from nanoscopic to macroscopic effects. This paper presents experimental proven explanations of the paper actuation and results using continuous CNTs of a CNT-array. For the first test series specimens are cut off a paper manufactured of single-walled, µm-long CNTs working in series. The second test series uses specimens which are prepared of free standing multi-walled CNTs. Their CNT lengths reach macroscopic dimensions of almost 3mm and they can be considered as connected in parallel. Both series are electromechanically tested. The paper tests reveal their strong condition-dependent microstructure. Generally, the observed effects can be explained by diffusion of ions into the flexible CNT microstructure. In contrast, the CNT-array based specimens show almost no condition dependency which can be explained by the strong carbon bonds. Due to specimen orientation and test set-up, macroscopic effects can be excluded. The found actuation can be attributed to an elongation of the carbon structure as result of ion-interaction. However, it must be assumed that there are further superimposing effects which might not be distinguished from each other down to the last detail.

Item URL in elib:https://elib.dlr.de/130022/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Teilweise Inhalte aus dem Querschnittsthema Gigastore
Title:EXPERIMENTAL STUDIES OF THE ACTUATION OF CARBON NANOTUBE-BASED MATERIALS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Geier, Sebastiansebastian.geier (at) dlr.dehttps://orcid.org/0000-0001-7941-3630
Mahrholz, ThorstenThorsten.Mahrholz (at) dlr.dehttps://orcid.org/0000-0003-1488-0910
Wierach, PeterPeter.Wierach (at) dlr.deUNSPECIFIED
Sinapius, Michaelm.sinapius (at) tu-braunschweig.deUNSPECIFIED
Date:9 September 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2019
Publisher:American Society of Mechanical Engineering
Status:Published
Keywords:Carbon nanotube, actuator, Bucky-paper, Carbon nanotube array, ion diffusion, ion intercalation
Event Title:ASME 2019 Conference on Smart Materials, and Intelligent Systems SMASIS2019
Event Location:Louisville, KY, USA
Event Type:international Conference
Event Dates:09-11. Sep. 2019
Organizer:American Society of Mechanical Engineering ASME
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Geier, Sebastian
Deposited On:11 Nov 2019 08:33
Last Modified:17 Jan 2020 08:11

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