title: Wireless Power Transfer for Autonomous Wearable Neurotransmitter Sensors.
abstract: 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.
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. cmnguyen@mavs.uta.edu.
authors.forename: Cuong M
authors.initials: CM
authors.lastname: Nguyen
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. pavankumar.kota@mavs.uta.edu.
authors.forename: Pavan Kumar
authors.initials: PK
authors.lastname: Kota
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. minh.nguyen66@mavs.uta.edu.
authors.forename: Minh Q
authors.initials: MQ
authors.lastname: Nguyen
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. souvik.dubey@mavs.uta.edu.
authors.forename: Souvik
authors.initials: S
authors.lastname: Dubey
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. smitha@uta.edu.
authors.forename: Smitha
authors.initials: S
authors.lastname: Rao
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. jeffrey.mays@mavs.uta.edu.
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Mays
authors.affiliation: Electrical Engineering Department, University of Texas at Arlington, TX 76019, USA. jcchiao@uta.edu.
authors.forename: J-C
authors.initials: JC
authors.lastname: Chiao
mesh_terms: D000818:Animals; D015374:Biosensing Techniques / Q000295:instrumentation*; D003198:Computer Simulation; D004560:Electricity; D004566:Electrodes; D018698:Glutamic Acid / Q000032:analysis; D018377:Neurotransmitter Agents / Q000032:analysis*; D051381:Rats; D059015:Wireless Technology / Q000295:instrumentation*
chemical_list: D018377:Neurotransmitter Agents; D018698:Glutamic Acid
keywords: L-glutamate sensors; multi-transmitter antenna; neurotransmitter sensor recorder; wireless power transmission