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  2. Polyvinylidene fluoride - Wikipedia

    en.wikipedia.org/wiki/Polyvinylidene_fluoride

    PVDF is a specialty plastic used in applications requiring the highest purity, as well as resistance to solvents, acids and hydrocarbons. PVDF has low density 1.78 g/cm 3 in comparison to other fluoropolymers, like polytetrafluoroethylene. It is available in the form of piping products, sheet, tubing, films, plate and an insulator for premium wire.

  3. Ferroelectric polymer - Wikipedia

    en.wikipedia.org/wiki/Ferroelectric_polymer

    First reported in 1971, ferroelectric polymers are polymer chains that must exhibit ferroelectric behavior, [4] hence piezoelectric [3] and pyroelectric behavior. [3]A ferroelectric polymer must contain permanent electrical polarization that can be reversed repeatedly, by an opposing electric field. [4]

  4. List of piezoelectric materials - Wikipedia

    en.wikipedia.org/wiki/List_of_piezoelectric...

    Piezoelectric polymers (PVDF, 240 mV-m/N) possess higher piezoelectric stress constants (g 33), an important parameter in sensors, than ceramics (PZT, 11 mV-m/N), which show that they can be better sensors than ceramics. Moreover, piezoelectric polymeric sensors and actuators, due to their processing flexibility, can be readily manufactured ...

  5. Piezoelectric micromachined ultrasonic transducer - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_micro...

    Piezoelectric micromachined ultrasonic transducers (PMUT) are MEMS-based piezoelectric ultrasonic transducers.Unlike bulk piezoelectric transducers which use the thickness-mode motion of a plate of piezoelectric ceramic such as PZT or single-crystal PMN-PT, PMUT are based on the flexural motion of a thin membrane coupled with a thin piezoelectric film, such as PVDF.

  6. Daniel Penny found not guilty in NYC subway chokehold death

    www.aol.com/news/daniel-penny-found-not-guilty...

    NEW YORK -- Daniel Penny was found not guilty of criminally negligent homicide in the chokehold death of Jordan Neely on a New York City subway car in 2023.. Penny, a 26-year-old Marine veteran ...

  7. Luigi Mangione faces first-degree murder charge in death of ...

    www.aol.com/news/luigi-mangione-faces-first...

    Luigi Mangione has been charged with first-degree murder in the killing of healthcare CEO Brian Thompson, the New York district attorney said on Tuesday. Mr Mangione faces various charges ...

  8. Nanogenerator - Wikipedia

    en.wikipedia.org/wiki/Nanogenerator

    A piezoelectric nanogenerator is an energy-harvesting device capable of converting external kinetic energy into electrical energy via action by a nano-structured piezoelectric material. It is generally used to indicate kinetic energy harvesting devices utilizing nano-scaled piezoelectric material, like in thin-film bulk acoustic resonators. [20 ...

  9. ESPN's Kirk Herbstreit: Indiana 'was not a team that should ...

    www.aol.com/sports/espns-kirk-herbstreit-indiana...

    Indiana may not have been one of the very best teams in college football, but a team that goes 11-1 in a power conference was always going to be a foregone conclusion to make the 12-team College ...