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Dosimetry of Microelectrodes Array Chips for Electrophysiological Studies Under Simultaneous Radio Frequency Exposures

dc.rights.licenseopenen_US
dc.contributor.authorNEFZI, Amani
dc.contributor.authorORLACCHIO, Rosa
dc.contributor.authorCARR, Lynn
dc.contributor.authorLEMERCIER, Clement E.
dc.contributor.authorEL KHOUEIRY, Corinne
hal.structure.identifierLaboratoire de l'intégration, du matériau au système [IMS]
dc.contributor.authorLEWIS, Noelle
IDREF: 156821346
dc.contributor.authorLEVEQUE, Philippe
dc.contributor.authorARNAUD-CORMOS, Delia
dc.date.accessioned2022-07-11T14:25:10Z
dc.date.available2022-07-11T14:25:10Z
dc.date.issued2022-01
dc.identifier.issn0018-9480en_US
dc.identifier.urioai:crossref.org:10.1109/tmtt.2021.3136296
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/140429
dc.description.abstractEnStudying the response of neuronal networks to radio frequency (RF) signals requires the use of a specific device capable of accessing and simultaneously recording neuronal activity during electromagnetic fields (EMF) exposure. In this study, a microelectrode array (MEA) that records the spontaneous activity of neurons is coupled to an open transverse electromagnetic (TEM) cell that propagates EMF. We characterize this system both numerically and experimentally at 1.8 GHz. Two MEA versions were compared, for the first time, to determine the impact of their design dissimilarities on the response to EMF. Macroscopic and microscopic measurements using, respectively, a fiber-optic probe and a temperature-dependent fluorescent dye (Rhodamine-B) were carried out. Results indicate that one MEA shows more stability toward the changes of the surrounding environment compared to the other MEA. Using a fiber-optic thermometer, the measured specific absorption rate (SAR) probe value in the center of the more stable MEA was 5.5 ± 2.3 W/kg. Using a Rhod-B microdosimetry technique, the measured SAR value at the level of the MEA electrodes was 7.0 ± 1.04 W/kg. SAR values are normalized per 1 W incident power. Due to the additional metallic planes and a smaller chip aperture, this new recording chip is steadier in terms of SAR and temperature stability allowing high exposure homogeneity as required during biological experiments. A typical neuronal activity recording under EMF exposure is reported.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enDosimetry
dc.subject.enelectromagnetic fields (EMFs)
dc.subject.enmicroelectrode array (MEA)
dc.subject.enneuronal network
dc.subject.enradio frequency (RF) signals
dc.subject.enspecific absorption rate (SAR)
dc.title.enDosimetry of Microelectrodes Array Chips for Electrophysiological Studies Under Simultaneous Radio Frequency Exposures
dc.typeArticle de revueen_US
dc.identifier.doi10.1109/tmtt.2021.3136296en_US
dc.subject.halSciences de l'ingénieur [physics]/Electromagnétismeen_US
bordeaux.journalIEEE Transactions on Microwave Theory and Techniquesen_US
bordeaux.page1-1en_US
bordeaux.hal.laboratoriesLaboratoire d’Intégration du Matériau au Système (IMS) - UMR 5218en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux INPen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-03720030
hal.version1
hal.date.transferred2022-07-11T14:25:13Z
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=IEEE%20Transactions%20on%20Microwave%20Theory%20and%20Techniques&rft.date=2022-01&rft.spage=1-1&rft.epage=1-1&rft.eissn=0018-9480&rft.issn=0018-9480&rft.au=NEFZI,%20Amani&ORLACCHIO,%20Rosa&CARR,%20Lynn&LEMERCIER,%20Clement%20E.&EL%20KHOUEIRY,%20Corinne&rft.genre=article


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