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2016 ; 6
(ä): 25899
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An electric generator using living Torpedo electric organs controlled by fluid
pressure-based alternative nervous systems
#MMPMID27241817
Tanaka Y
; Funano S
; Nishizawa Y
; Kamamichi N
; Nishinaka M
; Kitamori T
Sci Rep
2016[May]; 6
(ä): 25899
PMID27241817
show ga
Direct electric power generation using biological functions have become a
research focus due to their low cost and cleanliness. Unlike major approaches
using glucose fuels or microbial fuel cells (MFCs), we present a generation
method with intrinsically high energy conversion efficiency and generation with
arbitrary timing using living electric organs of Torpedo (electric rays) which
are serially integrated electrocytes converting ATP into electric energy. We
developed alternative nervous systems using fluid pressure to stimulate
electrocytes by a neurotransmitter, acetylcholine (Ach), and demonstrated
electric generation. Maximum voltage and current were 1.5?V and 0.64?mA,
respectively, with a duration time of a few seconds. We also demonstrated energy
accumulation in a capacitor. The current was far larger than that using general
cells other than electrocytes (~pA level). The generation ability was confirmed
against repetitive cycles and also after preservation for 1 day. This is the
first step toward ATP-based energy harvesting devices.