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2015 ; 15
(9
): 24553-72
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Wireless Power Transfer for Autonomous Wearable Neurotransmitter Sensors
#MMPMID26404311
Nguyen CM
; Kota PK
; Nguyen MQ
; Dubey S
; Rao S
; Mays J
; Chiao JC
Sensors (Basel)
2015[Sep]; 15
(9
): 24553-72
PMID26404311
show ga
In this paper, we report a power management system for autonomous and real-time
monitoring of the neurotransmitter L-glutamate (L-Glu). A low-power, low-noise,
and high-gain recording module was designed to acquire signal from an implantable
flexible L-Glu sensor fabricated by micro-electro-mechanical system (MEMS)-based
processes. The wearable recording module was wirelessly powered through inductive
coupling transmitter antennas. Lateral and angular misalignments of the receiver
antennas were resolved by using a multi-transmitter antenna configuration. The
effective coverage, over which the recording module functioned properly, was
improved with the use of in-phase transmitter antennas. Experimental results
showed that the recording system was capable of operating continuously at
distances of 4 cm, 7 cm and 10 cm. The wireless power management system reduced
the weight of the recording module, eliminated human intervention and enabled
animal experimentation for extended durations.