Abstract:
:In vivo electronic monitoring systems are promising technology to obtain biosignals with high spatiotemporal resolution and sensitivity. Here we demonstrate the fabrication of a biocompatible highly conductive gel composite comprising multi-walled carbon nanotube-dispersed sheet with an aqueous hydrogel. This gel composite exhibits admittance of 100 mS cm(-2) and maintains high admittance even in a low-frequency range. On implantation into a living hypodermal tissue for 4 weeks, it showed a small foreign-body reaction compared with widely used metal electrodes. Capitalizing on the multi-functional gel composite, we fabricated an ultrathin and mechanically flexible organic active matrix amplifier on a 1.2-μm-thick polyethylene-naphthalate film to amplify (amplification factor: ∼200) weak biosignals. The composite was integrated to the amplifier to realize a direct lead epicardial electrocardiography that is easily spread over an uneven heart tissue.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Sekitani T,Yokota T,Kuribara K,Kaltenbrunner M,Fukushima T,Inoue Y,Sekino M,Isoyama T,Abe Y,Onodera H,Someya Tdoi
10.1038/ncomms11425subject
Has Abstractpub_date
2016-04-29 00:00:00pages
11425issn
2041-1723pii
ncomms11425journal_volume
7pub_type
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