Prospects for Neuroprosthetics: Flexible Microelectrode Arrays with Polymer Conductors

Blau, Axel

doi:10.5772/23186

Cited by 4 publications

(2 citation statements)

References 190 publications

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“…Further, an electrical potential difference exists between the interior and exterior of the cells. As a charged object with mass moves between different gravitational potential points, biopotential changes are evoked [ 2 , 16 , 17 ]. Thus, a finger touch stimulus may result in potential changes.…”

Section: Resultsmentioning

confidence: 99%

Flexible Boron-Doped Diamond (BDD) Electrodes for Plant Monitoring

Tago¹,

Ochiai

Suzuki

et al. 2017

Sensors

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Detecting the bio-potential changes of plants would be useful for monitoring their growth and health in the field. A sensitive plant monitoring system with flexible boron-doped diamond (BDD) electrodes prepared from BDD powder and resin (Nafion or Vylon-KE1830) was investigated. The properties of the electrodes were compared with those of small BDD plate-type electrodes by monitoring the bioelectric potentials of potted Aloe and hybrid species in the genus Opuntia. While flexible BDD electrodes have wide potential windows, their cyclic voltammograms are different from those of the BDD plate. Further, the potential gap between a pair of electrodes attached to the plants changes as the plants are stimulated artificially with a finger touch, suggesting that the bioelectric potentials in the plant also changed, manifesting as changes in the potential gap between the electrodes. The BDD electrodes were assessed for their response reproducibility to a finger stimulus for 30 days. It was concluded that the plant monitoring system worked well with flexible BDD electrodes. Further, the electrodes were stable, and as reliable as the BDD plate electrodes in this study. Thus, a flexible and inexpensive BDD electrode system was successfully fabricated for monitoring the bioelectric potential changes in plants.

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Section: Resultsmentioning

confidence: 99%

Flexible Boron-Doped Diamond (BDD) Electrodes for Plant Monitoring

Tago¹,

Ochiai

Suzuki

et al. 2017

Sensors

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show abstract

“…Higher charge density would enable to pump in higher charge at the electrode/biological element interface even in with a smaller area electrode. However, there is a tradeoff between electrode dimension and interface impedance (2). A decrease in the electrode dimension results in low capacitance and high impedance which is a major drawback for stimulation because higher signal amplitudes are required for efficiently stimulating the cells.…”

Section: Introductionmentioning

confidence: 99%

Preparation of High Charge Storage Capacity PEDOT/Functionalized MWCNTs Hybrid Nanocomposite for Neural Electrode Applications

Gunapu

Vanjari

2017

ECS Trans.

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This paper presents the experimental methodology of identifying the most suitable Poly 3,4-Ethylene Dioxy Thiophene (PEDOT) based hybrid nanocomposite for neural electrode applications. The key requirement for such electrodes is high charge storage capacity, which enables generation of activation potential without crossing pain threshold. Nanomaterials are key enablers for this high charge storage capacity. Hence hybrid nanocomposites of PEDOT doped with a wide range of nanomaterials such as multi walled carbon nanotubes (MWCNTs), graphene nano platelets (GNPs) graphene oxide (GO), functionalized multi walled carbon nanotubes (FMWCNTs) were prepared and characterized using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results indicate that the prepared PEDOT/FMWCNTs nanocomposite has highest charge storage capacity and very low interface impedance and thus is the most suitable material for neural electrode applications.

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