Search results
Results from the WOW.Com Content Network
Poly(4-vinylphenol), also called polyvinylphenol or PVP, is a plastic structurally similar to polystyrene. It is produced from the monomer 4-vinylphenol, which is also referred to as 4-hydroxystyrene. PVP is used in electronics as a dielectric layer in organic transistors in organic TFT LCD displays.
A radome avoids that by covering the antenna's exposed parts with a sturdy, weatherproof material, typically fiberglass, keeping debris or ice away from the antenna, thus preventing any serious issues. One of the main driving forces behind the development of fiberglass as a structural material was the need during World War II for radomes. [6]
A metallic lens antenna and its inventor Winston E. Kock in 1946. This structure is one of the earliest examples of artificial dielectrics. Artificial dielectrics are fabricated composite materials, often consisting of arrays of conductive shapes or particles in a nonconductive support matrix, designed to have specific electromagnetic properties similar to dielectrics.
Types of dielectric materials that inhibit the transmission of electric current. Subcategories. ... Quartz (4 C, 6 P) Pages in category "Dielectrics"
A liquid dielectric is a dielectric material in liquid state. Its main purpose is to prevent or rapidly quench electric discharges.Dielectric liquids are used as electrical insulators in high voltage applications, e.g. transformers, capacitors, high voltage cables, and switchgear (namely high voltage switchgear).
All insulating materials consisting of more than one type of atom will be ionic to some extent due to the difference of electronegativity of the atoms, and therefore exhibit electrostriction. [citation needed] The resulting strain (ratio of deformation to the original dimension) is proportional to the square of the polarization. Reversal of the ...
Flexoelectricity is a property of a dielectric material where there is coupling between electrical polarization and a strain gradient. This phenomenon is closely related to piezoelectricity, but while piezoelectricity refers to polarization due to uniform strain, flexoelectricity specifically involves polarization due to strain that varies from point to point in the material.
The EC effect involves a temperature change in a dielectric material when an electric field is applied or removed, making it suitable for compact cooling solutions. In 2013, a chip-scale solid-state cooling system utilizing EC polymer films was demonstrated, achieving a 6 K temperature span near room temperature through a prototype EC ...