Carbon fiber polymer-matrix structural composite as a semiconductor and concept of optoelectronic and electronic devices made from it

Chung, D.D.L.; Wang, Shoukai

doi:10.1088/0964-1726/8/1/018

Cited by 41 publications

(20 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A structural capacitor can be made by utilizing a structural dielectric, such as a carbon [9,10] glass fiber-reinforced polymer composite, with integrated electrode layers as shown in Figure 3. Energy storage is achieved through polarization of the dielectric.…”

Section: Structural Capacitorsmentioning

confidence: 99%

Multifunctional Power-Generating and Energy-Storing Structural Composites for U.S. Army Applications

et al. 2004

View full text Add to dashboard Cite

Many U.S. Army systems, such as ground vehicles and fully equipped soldiers, are comprised of multiple subcomponents which each typically perform unique functions. Combining these functions into single, multifunctional components could reduce mass and improve overall system efficiency. In particular, creating structural materials that also provide power generating or energy storing capacity could provide significant weight savings over a range of platforms. In this study, structural composite batteries, fuel cells, and capacitors are proposed. To ensure performance benefits, these multifunctional composites are designed so that the materials involved in power and energy processes are also load bearing, rather than simply packaged within monofunctional structural materials. Fabrication and design details for these multifunctional systems, as well as structural and power/energy performance results, are reported. Critical material properties and fabrication considerations are highlighted, and important technical challenges are identified. Structural lithium-ion batteriesMater. Res. Soc. Symp. Proc. Vol. 851

show abstract

Section: Structural Capacitorsmentioning

confidence: 99%

Multifunctional Power-Generating and Energy-Storing Structural Composites for U.S. Army Applications

et al. 2004

View full text Add to dashboard Cite

show abstract

“…Others have proposed CFRP-based structural supercapacitors for energy harvesting capabilities. Chung and Wang [24] proposed a capacitor fabricated from semi-conductive carbon fibers for the electrodes and an insulation paper for the dielectric. Luo and Chung [25] proposed using pre-preg CFRP layers for the electrodes and insulation paper for the dielectric, demonstrating a capacitance up to 1200 nF/m 2 .…”

Section: Introductionmentioning

confidence: 99%

Capacitance-based sensor with layered carbon-fiber reinforced polymer and titania-filled epoxy

Jin

Downey

Chen

et al. 2019

Composite Structures

View full text Add to dashboard Cite

Advances in intelligent infrastructure can be achieved through the use of novel materials for increased systemlevel efficiency and multifunctionality. Carbon Fiber-Reinforced Polymer (CFRP) has been widely used in strengthening, rehabilitating, and retrofitting of existing structures because of its speed of deployment, low maintenance requirement, and high strength-to-weight ratio. In this work, the authors propose a novel method to augment CFRP with self-sensing capabilities. The sensor consists of two CFRP layers separated by a titania-filled epoxy dielectric layer, therefore forming a parallel plate capacitor. Sensing capability can be achieved through variations in the sensor's capacitance provoked by strain, therefore providing an additional function that could be leveraged for structural health monitoring and structural health management purposes. Comprehensive testing, including (1) sensing properties on sensors with and without titania-doped epoxy and (2) electromechanical test on tension specimens subjected to both static and dynamic loading, was conducted. The test results show that doping the titania filler within the epoxy matrix can improve the sensor's sensitivity. The gauge factor is 0.92 under static load and decreases with the increasing frequency up to 1 Hz. Therefore, it can be concluded that CFRP can be used as a self-sensing sensor without affecting its mechanical properties. AbstractAdvances in intelligent infrastructure can be achieved through the use of novel materials for increased systemlevel efficiency and multifunctionality. Carbon Fiber-Reinforced Polymer (CFRP) has been widely used in strengthening, rehabilitating, and retrofitting of existing structures because of its speed of deployment, low maintenance requirement, and high strength-to-weight ratio. In this work, the authors propose a novel method to augment CFRP with self-sensing capabilities. The sensor consists of two CFRP layers separated by a titania-filled epoxy dielectric layer, therefore forming a parallel plate capacitor. Sensing capability can be achieved through variations in the sensor's capacitance provoked by strain, therefore providing an additional function that could be leveraged for structural health monitoring and structural health management purposes. Comprehensive testing, including (1) sensing properties on sensors with and without titania-doped epoxy and (2) electromechanical test on tension specimens subjected to both static and dynamic loading, was conducted. The test results show that doping the titania filler within the epoxy matrix can improve the sensor's sensitivity and that the sensor's signal increases linearly with increasing strain. A static gauge factor of 0.92 was obtained, and the dynamic gauge factor characterized under 0.25, 0.5, and 1Hz. It is also found that CFRP can be used as a self-sensing material without affecting its mechanical properties.

show abstract

“…In 1999, Chung and Wang reported the use of carbon fiber reinforced polymers (CFRP) in “structural electronics”. In a follow‐on study, Luo and Chung prepared thin structural capacitors from carbon fiber pre‐pregs separated by paper dielectrics and reported its high dynamic capacitance of 1.2 μF/m 2 at 2 MHz.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of epoxy/carbon fiber composite capacitors

Zhao

Zhang³

et al. 2014

Polymer Composites

View full text Add to dashboard Cite

Capacitors based on structural carbon fiber electrodes and epoxy-based gel polymer electrolyte have been fabricated. The electrochemical properties of electrolytes and capacitors were evaluated by linear sweep voltammetry, cyclic voltammetry (CV), galvanostatic charge-discharge, and electrochemical impedance spectroscopy techniques. Surface modification of carbon fibers was carried out by oxidation, and the structural and surface characteristics of carbon fibers were investigated by scanning electron microscope, Brunauer-Emmet-Teller, and Boehm titration. The results showed that the electrochemical stability window of the electrolyte reached 2.75 V and the ionic conductivity reached the order of 10 25

show abstract

Carbon fiber polymer-matrix structural composite as a semiconductor and concept of optoelectronic and electronic devices made from it

Cited by 41 publications

References 14 publications

Multifunctional Power-Generating and Energy-Storing Structural Composites for U.S. Army Applications

Multifunctional Power-Generating and Energy-Storing Structural Composites for U.S. Army Applications

Capacitance-based sensor with layered carbon-fiber reinforced polymer and titania-filled epoxy

Preparation and characterization of epoxy/carbon fiber composite capacitors

Contact Info

Product

Resources

About