000825951 001__ 825951 000825951 005__ 20240619091225.0 000825951 0247_ $$2doi$$a10.3390/bios7010001 000825951 0247_ $$2Handle$$a2128/13407 000825951 0247_ $$2WOS$$aWOS:000398085500001 000825951 0247_ $$2altmetric$$aaltmetric:14969733 000825951 0247_ $$2pmid$$apmid:28025564 000825951 037__ $$aFZJ-2017-00223 000825951 082__ $$a570 000825951 1001_ $$0P:(DE-Juel1)159559$$aKireev, Dmitry$$b0$$ufzj 000825951 245__ $$aVersatile Flexible Graphene Multielectrode Arrays 000825951 260__ $$aBasel$$bMDPI$$c2017 000825951 3367_ $$2DRIVER$$aarticle 000825951 3367_ $$2DataCite$$aOutput Types/Journal article 000825951 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1484045443_19266 000825951 3367_ $$2BibTeX$$aARTICLE 000825951 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000825951 3367_ $$00$$2EndNote$$aJournal Article 000825951 520__ $$aGraphene is a promising material possessing features relevant to bioelectronics applications. Graphene microelectrodes (GMEAs), which are fabricated in a dense array on a flexible polyimide substrate, were investigated in this work for their performance via electrical impedance spectroscopy. Biocompatibility and suitability of the GMEAs for extracellular recordings were tested by measuring electrical activities from acute heart tissue and cardiac muscle cells. The recordings show encouraging signal-to-noise ratios of 65 ± 15 for heart tissue recordings and 20 ± 10 for HL-1 cells. 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