Results 211 to 220 of about 3,665 (244)
Some of the next articles are maybe not open access.
A new technique in contact electrification
Journal of Physics E: Scientific Instruments, 1979A new type of instrument to study contact-charging phenomena is described. The two functions of any contact-charging apparatus, namely touching two materials together, separating them and then measuring the transferred charge, are performed by a single element, a flexing cantilever, bonded to a piezoelectric strip.
openaire +1 more source
Ice‐crystal contact electrification
Quarterly Journal of the Royal Meteorological Society, 1960AbstractAn experimental investigation of electrification accompanying the momentary single contact of vapourgrown ice crystals at the same or at different temperatures suggests than any such effect is much smaller than might be expected from Reynolds's report on charging observed with riming spheres and vapour‐grown ice crystals.
openaire +1 more source
Contact electrification of solid particles
Proceedings of the Physical Society, 1941Solid particles carry with them electrostatic charges from contact with the storage vessel. The sign of the charge acquired in the air of the laboratory was determined for metal particles which were poured either from a silica bowl or from a glass beaker, and for particles of insulators and semiconductors which parted contact with containers of silica,
openaire +1 more source
Air Breakdown in Contact Electrification
2022Contact electrification of solids in a gas medium involves two stages, i.e., surface charge deposition immediately at separation, and dissipation due to dielectric breakdown of the medium as the gap increases. The presumption that such gas breakdown obeys Paschen's law, which is conventionally determined for gas between electrodes with constant charge ...
openaire +1 more source
Contact electrification of coal and minerals
Journal of Electrostatics, 1994Abstract The contact electrification of coals from France, the Great Britain and the United States has been studied. Additionally, the behavior of the most abundant minerals in coal (quartz, calcite and pyrite) has been investigated. The charge transfer upon repeated contacts with a copper plate has been measured.
openaire +1 more source
Electrification following the contact of solids
Contemporary Physics, 1961Abstract The charge found on solids after they have been rubbed together can only be a direct consequence of friction when the rubbing is vigorous; more usually, the charging is the result of contact, rubbing complicating the phenomenon. Opinions differ regarding the origin of contact charging, but certain experiments suggest a working hypothesis ...
openaire +1 more source
Contact electrification of dielectric solids
Journal of Electrostatics, 1978Abstract The main questions of the basic concept dealing with contact electrification of dielectric solids are summarized. Recent results which have a direct bearing on static electrification of polymer solids are reviewed. Differences between equilibrium contact electrification, transient contact electrification, and steady-state contact ...
openaire +1 more source
Smooth polymers charge negatively: Controlling contact electrification polarity in polymers
Nano Energy, 2022Kaspars Pudzs +2 more
exaly
Contact electrification induced mechanoluminescence
Nano Energy, 2022Wenxiang Wang +5 more
openaire +1 more source