Lipid bilayer on wrinkled-interfaced graphene field effect transistor

•Wrinkled SiO2 interfaced graphene utilized as bioelectronic platform.•Wrinkled-interfaced graphene enhances sensitivity and durability of lipid bilayer platform.•Bioelectronic interface made of SiO2 encapsulation of epitaxial graphene. This study describes lipid bilayer-based sensor interface on Si...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2021-02, Vol.284, p.128998, Article 128998
Main Authors: Ozkendir Inanc, Dilce, Celebi, Cem, Hakan Yildiz, Umit
Format: Article
Language:English
Subjects:
Atomic force microscopy
Bioelectricity
Bioelectronic interface
Cell membranes
Epitaxial growth
Field effect transistors
GFET
Graphene
Lipid bilayer formation
Lipids
Materials science
Morphology
Semiconductor devices
Sensitivity enhancement
Silicon dioxide
Silicon dioxide encapsulation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Wrinkled SiO2 interfaced graphene utilized as bioelectronic platform.•Wrinkled-interfaced graphene enhances sensitivity and durability of lipid bilayer platform.•Bioelectronic interface made of SiO2 encapsulation of epitaxial graphene. 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.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2020.128998