Electrophysiological Data Processing Using a Dynamic Range Compressor Coupled to a Ten Bits A/D Convertion Port

Babarada, F.; Ravariu, Cristian; Arhip, J.

doi:10.1109/ccp.2011.24

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Application of this device at low frequencies could be interesting in electrophysiology, where the most useful biosignals posses frequencies under 1Hz, [22]. The proposed organic transistor is suitable for the biomimetic applications, which involve carriers mobility under 0.1cm 2 /Vs, [23].…”

Section: Discussion and Comparisonsmentioning

confidence: 99%

Different Work Regimes of an Organic Thin Film Transistor OTFT and Possible Applications in Bioelectronics

Ravariu

Dragomirescu²

2015

BIO

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This paper presents an organic semiconductor transistor, with a vertical current modulation and a horizontal conduction. The simulations show a stronger top gate influence and establish four work regimes, depending on the top and bottom gates biasing. In the most favorable regime for the holes channel, under the reverse biased n + p junction, the holes/electrons current densities ratio reaches 0.168/269. However, an ambipolar OTFT function occurs under the reverse biasing of the vertical junction, with a top n-layer and a bottom p-layer. Due to the asymmetrical doping profile, the n + channel conduction prevails in all the regimes. Therefore, the maximum current density of 1900A/cm 2 is ensured by a double n channel, when both gates are positive biased. After simulations, three distinct work regimes are revealed by this single device: a SOI behavior with volume channel, a JFET with neutral median channel and an OTFT with one or more interface channels.

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Section: Discussion and Comparisonsmentioning

confidence: 99%

Different Work Regimes of an Organic Thin Film Transistor OTFT and Possible Applications in Bioelectronics

Ravariu

Dragomirescu²

2015

BIO

Self Cite

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“…In turn, for biosignal with higher frequency, around 1kHz, the reactance value tends to hundreds ohms, becoming attractive for invasive tests onto tissue. The manufactured electrodes are tested using a multi-channel ADS1298, which work principle was previously depicted, [8], working now on 24-Bit Analog-to-Digital Converter with integrated electro-physiological front-end platform to increase the accuracy. The electrodes were placed onto the abdomen skin, to become more sensitive to others biosignals than ECG.…”

Section: Testing and Measurementsmentioning

confidence: 99%

Manufacturing of capacitive electrodes on Si-substrate for electrophysiological applications

Ravariu

Babarada

Manea

et al. 2014

2014 International Semiconductor Conference (CAS)

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The usual electrodes from electrophysiology are resistive. A variable metal-skin contact resistance frequently generates unpleasant artifacts. The capacitive electrodes avoid this disadvantage and are suitable for variable biosignals recording. The main novelty of this paper is the manufacturing of capacitive electrodes with all terminals on the top surface, letting free the electrode bottom for physiological preparations.So, the paper firstly presents the TCAD techniques used for the design of some capacitive electrode using three mask levels. By EDA, L-EDIT tools, the layers that constitute the fabrication masks are transferred to the glass support. In the last part, the electrodes technological flow design and testing in a real electrophysiological platform using the capacitive electrodes, are presented.

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Personalized Mio-electrical Monitoring System Based on ADS1298 and MIM Electrodes

Ravariu

Babarada

Arhip³

et al. 2018

2018 10th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)

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Electrophysiological Data Processing Using a Dynamic Range Compressor Coupled to a Ten Bits A/D Convertion Port

Cited by 3 publications

References 7 publications

Different Work Regimes of an Organic Thin Film Transistor OTFT and Possible Applications in Bioelectronics

Different Work Regimes of an Organic Thin Film Transistor OTFT and Possible Applications in Bioelectronics

Manufacturing of capacitive electrodes on Si-substrate for electrophysiological applications

Personalized Mio-electrical Monitoring System Based on ADS1298 and MIM Electrodes

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