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Electrovibration
The history of electrovibration goes back to 1954. It was first discovered by accident and E. Mallinckrodt, A. L. Hughes and W. Sleator Jr. reported “... that dragging a dry finger over a conductive surface covered with a thin insulating layer and excited with a 110 V () signal, created a characteristic rubbery feeling”.〔Mallinckrodt, E.; Hughes, A. L.; Sleator, W. Jr. "(Perception by the Skin of Electrically Induced Vibrations )". (Extract) ''Science'', Vol 118, No. 3062, pp.277-278, 4 September 1953. . (print) Retrieved 7 June 2015 for full access〕 In their experiment, the finger and the metal surface create a capacitive setup. The attraction force created between the finger and the surface was too weak to perceive, but it generated a rubbery sensation when the finger was moving on the surface. This sensation was named 'electrovibration' by the group. Today, Senseg〔(Senseg )〕 and Disney Research〔Bau, Olivier; Israr, Ali; Poupyrev, Ivan; Harrison, Chris; Baskinger, Mark; May, Jason (3 October 2010) (Electrostatic Vibration ) (formerly “TeslaTouch”), Disney Research, Retrieved 7 June 2015〕〔 (Free download, 4.2 MB) 〕 are developing technology that could bring electrovibration to modern touchscreen devices.
== History ==
"In summer of 1950, E Mallinckrodt noted that a certain shiny brass electric light socket did not feel as smooth when the light was burning as it did with the light off". Then Mallinckrodt created a setup to investigate the effect scientifically. He connected an aluminum plate through a variable current limiting resistor to a 60 Hz, 110v power supply. Half of the aluminum plate was coated with an insulating varnish while the rest was left uncoated. As a result of the test he identified that the feeling of friction only appears when there is an insulating barrier between the conductive surface and the sliding finger. He concluded that the finger gets electrically polarized and this induced charge creates a force between that finger and the surface. He named this phenomena "Electrically Induced Vibrations".〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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