A Humanoid Foot with Polypyrrole Conducting Polymer Artificial Muscles for Energy Dissipation and Storage

2007 ◽  
Author(s):  
Thomas W. Secord ◽  
H. Harry Asada
Keyword(s):  
Energy Dissipation ◽  
Conducting Polymer ◽  
Artificial Muscles ◽  
And Storage

scholarly journals Development of Materials for Naval, Fluvial and Military Applications

2018 ◽  
Vol 11 (22) ◽  
pp. 63
Author(s):  
Fabio A. Suarez- Bustamante ◽  
Orlando D. Barrios-Revollo ◽  
Anderson Valencia ◽  
Juan P. Hernandez-Ortiz
Keyword(s):  
Energy Dissipation ◽  
High Performance ◽  
Wide Spectrum ◽  
Advanced Characterization ◽  
Mechanical Resistance ◽  
Optimal Processing ◽  
Military Applications ◽  
Temperature Transformation ◽  
And Storage

A platform to design composite materials of a polymeric matrix, that are specifically for military applications on fluvial and naval navigation, has been developed using energy dissipation and storage mechanisms. Our composites are designed to generate synergy between the dissipation capacities of ceramics and high-performance fibers, which are used as the reinforced material in the lightweight laminates. The composite design is combined with processing tools and advanced characterization techniques that result in laminates with reliability, traceability and quality. The platform begins with the identification of energy dissipation mechanisms and the detailed characterization of the polymeric resin. It includes the Time – Temperature – Transformation Diagram (TTT- Diagram) that supplies the optimal processing conditions. Our designs open new paths for military applications including a wide spectrum of protective systems together with geometric versatility, high mechanical resistance and reliability

scholarly journals Elastic conducting polymer composites in thermoelectric modules

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Nara Kim ◽  
Samuel Lienemann ◽  
Ioannis Petsagkourakis ◽  
Desalegn Alemu Mengistie ◽  
Seyoung Kee ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Harvesting ◽  
Conducting Polymer ◽  
Thermoelectric Module ◽  
Great Promise ◽  
Seamless Integration ◽  
Storage Devices ◽  
Elastomer Composites ◽  
Conducting Polymer Composites ◽  
And Storage

AbstractThe rapid growth of wearables has created a demand for lightweight, elastic and conformal energy harvesting and storage devices. The conducting polymer poly(3,4-ethylenedioxythiophene) has shown great promise for thermoelectric generators, however, the thick layers of pristine poly(3,4-ethylenedioxythiophene) required for effective energy harvesting are too hard and brittle for seamless integration into wearables. Poly(3,4-ethylenedioxythiophene)-elastomer composites have been developed to improve its mechanical properties, although so far without simultaneously achieving softness, high electrical conductivity, and stretchability. Here we report an aqueously processed poly(3,4-ethylenedioxythiophene)-polyurethane-ionic liquid composite, which combines high conductivity (>140 S cm−1) with superior stretchability (>600%), elasticity, and low Young’s modulus (<7 MPa). The outstanding performance of this organic nanocomposite is the result of favorable percolation networks on the nano- and micro-scale and the plasticizing effect of the ionic liquid. The elastic thermoelectric material is implemented in the first reported intrinsically stretchable organic thermoelectric module.

Anisotropic Strain and Training of Conducting Polymer Artificial Muscles under High Tensile Stresses

2009 ◽  
Vol 1224 ◽  
Author(s):  
Keiichi Kaneto ◽  
Hikaru Hashimoto ◽  
Kazuo Tominaga ◽  
Tomokazu Sedai ◽  
Wataru Takashima
Keyword(s):  
Tensile Stress ◽  
Conducting Polymer ◽  
Polymer Chains ◽  
Artificial Muscles ◽  
Tensile Stresses ◽  
Polyaniline Films ◽  
Electrochemical Cycling ◽  
The One ◽  
And Training ◽  
Anisotropic Deformation

AbstractElectrochemomechanical deformations (ECMD) of conducting polymer, polyaniline, films are studied to investigate the creeping and the memory effects. During electrochemical cycling under high tensile stresses up to 5 MPa, the films showed a remarkable creeping, resulting in the one dimensional anisotropic deformation. However, the creeping was recovered by release of the tensile stress, restoring from the anisotropic deformation. It was also found that the strain of ECMD after applying high tensile stresses increased compared with that before applying the large tensile stress. The result indicates that the artificial muscles are strengthened in strain by the experience of large tensile loads, and discussed taking the rheology of electrochemical cycles, viz., electrostatic crosslinking of polymer chains by oxidation and release of crosslinking by reduction.

Integrated Bioderived-Conducting Polymer Membrane Nanostructures for Energy Conversion and Storage

2012 ◽  
Author(s):  
Vishnu-Baba Sundaresan ◽  
Sergio Salinas
Keyword(s):  
Energy Conversion ◽  
Conducting Polymer ◽  
Redox Reactions ◽  
Three Dimensional ◽  
Polymer Membrane ◽  
System Level ◽  
Material System ◽  
Active Materials ◽  
Energy Conversion And Storage ◽  
And Storage

Conducting polymers are ionic active materials that can perform electro-chemo-mechanical work through redox reactions. The electro-chemo-mechanical coupling in these materials has been successfully applied to develop various application platforms (actuation systems, sensor elements and energy storage devices (super capacitors, battery electrodes)). Similarly, bioderived membranes are ionic active materials that have been demonstrated as actuators, sensors and energy harvesting devices. Bioderived membranes offer significant advantages over synthetic ionic active materials in energy conversion and the scientific community has put forward various system level concepts for application in engineering applications. The biological origins of these material systems and their subsequent mechanical, electrical and thermal properties have served as a key deterrent in applications. This article proposes a novel architecture that combines a conducting polymer and a bioderived membrane into an integrated material system in which the charge gradients generated from a biochemical reaction is stored and released in the conducting polymer through redox reactions. This paper discusses the fabrication and topographical characterization of the integrated bioderived-conducting polymer membrane nanostructures. The prototype comprises of an organized array of fluid-filled three-dimensional containers with an integrated membrane shell that performs energy conversion and storage owing to its multi-functional microstructure. The bioderived membrane is self-assembled into a hollow spherical container from synthetic membranes or bilayer lipid membranes with proteins and the conducting polymer membrane forms a wrapper around this container resulting in a three-dimensional assembly.

Energy Dissipation and Storage in Underground Mining Operations

2018 ◽  
Vol 52 (1) ◽  
pp. 229-245 ◽  
Author(s):  
Xiangjian Dong ◽  
Ali Karrech ◽  
Hakan Basarir ◽  
Mohamed Elchalakani ◽  
Abdennour Seibi
Keyword(s):  
Energy Dissipation ◽  
Underground Mining ◽  
Mining Operations ◽  
And Storage

scholarly journals A comparative review of artificial muscles for microsystem applications

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Mayue Shi ◽  
Eric M. Yeatman
Keyword(s):  
Artificial Muscle ◽  
System Level ◽  
Soft Robotics ◽  
Artificial Muscles ◽  
Energy Delivery ◽  
Comparative Review ◽  
Muscle Types ◽  
Application Requirements ◽  
And Storage ◽  
Energy Autonomy

AbstractArtificial muscles are capable of generating actuation in microsystems with outstanding compliance. Recent years have witnessed a growing academic interest in artificial muscles and their application in many areas, such as soft robotics and biomedical devices. This paper aims to provide a comparative review of recent advances in artificial muscle based on various operating mechanisms. The advantages and limitations of each operating mechanism are analyzed and compared. According to the unique application requirements and electrical and mechanical properties of the muscle types, we suggest suitable artificial muscle mechanisms for specific microsystem applications. Finally, we discuss potential strategies for energy delivery, conversion, and storage to promote the energy autonomy of microrobotic systems at a system level.

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