Electret behavior of unpoled carbon fiber with and without nickel coating

  title={Electret behavior of unpoled carbon fiber with and without nickel coating},
  author={Xiang Xi and D. D. L. Chung},

Electret behavior discovered in solder, specifically tin–silver

An electret is a permanent electric dipole exhibited by a material. This work provides the first report of the electret behavior of a solder, which is Sn–4Ag in the form of a fluxless unpoled wire of



Electret, piezoelectret and piezoresistivity discovered in steels, with application to structural self-sensing and structural self-powering

Electret, piezoelectret, piezoresistivity and stress-dependent electric permittivity are reported in unmodified steels. Structural stress/strain self-sensing based on piezoelectret/piezoresistivity

Development of epoxy-based electrets

The use of a diepoxide resin in the form of 1,4-butanediol diglycidyl ether as the epoxy resin, lithium perchlorate (20 wt.%) as the ionic salt, a hardener (4,7,10-trioxatridecane-1,13-diamine, 15

Cement-based piezoelectret

A cement-based piezoelectret is reported for the first time. Both poling during setting and sodium silicate liquid admixture strengthened the piezoelectret effect. The electret voltage increased upon

Recent Advances in the Improvement of Polymer Electret Films

Polymer electret materials are electrically charged dielectric polymers capable of quasi-permanently retaining their electric field. However, environmental influences such as temperature and humidity