Dielectric Properties and Electronic Applications of Aerogels
| Autor: | R. W. Pekala, L. W. Hrubesh |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Materials science
Dielectric strength Condensed Matter::Other Physics::Instrumentation and Detectors Physics::Optics Aerogel Dielectric Condensed Matter::Disordered Systems and Neural Networks Thermal expansion Condensed Matter::Soft Condensed Matter visual_art visual_art.visual_art_medium Dissipation factor Ceramic Thin film Composite material Microwave |
| Zdroj: | Sol-Gel Processing and Applications ISBN: 9781461360988 |
| DOI: | 10.1007/978-1-4615-2570-7_31 |
| Popis: | Among their other exceptional properties, aerogels also exhibit unusual dielectric properties due to their nano-sized structures and high porosities. For example, our measurements of the dielectric constants and loss tangents for several aerogel varieties at microwave frequencies show that they both vary linearly with the aerogel density, indicating that the dielectric behavior of aerogels is more gas-like than solid-like. We have also measured the dielectric strength of silica aerogels and find that they are better than ceramics for high voltage insulation. The low dielectric constants and loss tangents of aerogels, along with their controllable thermal expansion properties, make them desirable materials for use as thin films in high speed integrated digital and microwave circuitry. |
| Databáze: | OpenAIRE |
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