Current and Future Trend in Multilayer Polymer Capacitors
A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".
Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 180
Special Issue Editor
Special Issue Information
Dear Colleagues,
Multilayer polymer films and composites are emerging as promising dielectric materials for next generation capacitors, where fast charge/discharge speeds, low dielectric loss, and enhanced resistance to electrical breakdown are required. The bulk dielectric properties of multilayer films can be tailored for specific applications by judicious choice of the source polymers coupled with precise control over their relative volumetric composition and individual layer thicknesses. In many instances, new properties can be attained that differ from those of any known polymers. Ultimately, multilayer polymer films will pave the way for fabrication of smaller and lighter capacitors with potential use in electric vehicles, defibrillators, aircraft launch systems, pulse forming networks, and various pulsed power applications.
Extensive research efforts are currently underway to establish better fundamental understanding of the electrical breakdown and energy storage mechanisms in multilayer capacitor films. Such research will lead to the design of new composite structures with minimized dielectric loss and optimized capacitance, breakdown strength, operational lifetime, and energy density.
This Special Issue focuses on the development of multilayer films as the active dielectric material in next generation capacitors. Topics of interest include but are not limited to:
- Screening of source polymers for dielectric, mechanical, and rheological properties suitable for use in multilayer capacitor films;
- Novel approaches for fabrication of multilayer polymer capacitor films;
- Identification of structure/function relationships that describe how layer structure and polymer volumetric composition affect dielectric performance;
- Elucidation of dielectric loss mechanisms in multilayer capacitor films;
- Effects of post-processing techniques such as biaxial stretching and annealing on dielectric properties;
- Characterization techniques for the evaluation of breakdown strength and operational lifetime in multilayer capacitor films;
- New techniques to measure high field effects such as thermal conductivity, polarization hysteresis, interfacial polarization, and electromechanical strain/deformation;
- Novel techniques for layer structure verification and interface imaging;
- Evaluation of electrical breakdown mechanism in multilayer films, including observation or verification of the barrier effect, or alternative breakdown pathways;
- Modeling of internal electric field distributions on a layer-by-layer basis and relation to high field electrical breakdown;
- Inclusion of ‘composite’ layers containing high dielectric constant dopants embedded within multilayer films
Dr. Mason A. Wolak
Guest Editor
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Keywords
- capacitor
- multilayer
- composite
- electrical breakdown
- energy density
- dielectric constant
- polymer film
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