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Title: Lipid bilayer on wrinkled-interfaced graphene field effect transistor
Authors: Özkendir İnanç, Dilce
Çelebi, Cem
Yıldız, Ümit Hakan
Keywords: Atomic force microscopy
Bioelectronic interface
Epitaxial growth
Lipid bilayer formation
Silicon dioxide encapsulation
Issue Date: Feb-2021
Publisher: Elsevier Ltd.
Abstract: This study describes lipid bilayer-based sensor interface on SiO2 encapsulated graphene field effect transistors (GFET). The SiO2 layer was utilized as a lipid compatible surface that drives bilayer formation. The two types of surface morphologies i) wrinkled morphology by thermal evaporation (TE) and ii) flat morphology by pulsed electron deposition (PED) were obtained. The sensing performance of wrinkled and flat interfaced-GFETs were investigated, pH sensitivity of wrinkled interfaced-GFETs were found to be ten fold larger than the flat ones. The enhanced sensitivity is attributed to thinning of the oxide layer by formation of wrinkles thereby facilitating electrostatic gating on graphene. We foresee that described wrinkled SiO2 interfaced-GFET holds promise as a cell membrane mimicking sensing platform for novel bioelectronic applications. © 2020
ISSN: 0167-577X
Appears in Collections:Chemistry / Kimya
Photonics / Fotonik
Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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