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2015 ; 5
(ä): 11657
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The Missing Memristor has Not been Found
#MMPMID26108376
Vongehr S
; Meng X
Sci Rep
2015[Jun]; 5
(ä): 11657
PMID26108376
show ga
In 1971, not only the theoretical and by definition already existing 'ideal
memristor' concept was introduced, but a real memristor device was suggested on
grounds of the already known real inductors. The latter is a scientifically
significant hypothesis grounded in fundamental symmetries of basic physics, here
electro-magnetism. 2008 claimed the discovery of the "missing memristor."
Controversy arose: The devices were not new, and the hypothesized device needs
magnetism but has no material memory, while the available devices constitute
analogue memory that would work in a world without magnetism. Nevertheless, even
the originator of the prediction accepted the discovery. Defenders of the 2008
claim emphasize that the devices are not merely 'memristive systems,' which is
however a distinction defined in 1976, not 1971. We clarify widely confused
concepts and maintain that the originally hypothesized real memristor device is
missing and likely impossible. The argument is illustrated also by finding an
ideal mechanical memristor element and purely mechanical memristive systems, and
hypothesizing a real mechanical memristor device that requires inert mass just
like the 1971 implied device requires magnetic induction.