Abstract
Acidity of the local microenvironments is an important parameter for detection of pathological conditions and understanding of cellular mechanisms. Silicon nanoribbon field effect transistor (FET) has been proved to be a high-throughput and sensitive platform for pH sensing. However, the efficiency of these sensors is limited by the biocompatibility of silicon material and its tendency for bio-fouling. Recent studies have demonstrated sub-2nm diameter carbon nanotube (CNT) porins embedded in lipid bilayers are fast and efficient proton conductors. In this research, we focus on a bioelectronic approach toward designing pH-sensing devices. We will describe an organic/inorganic hybrid device that combines nanoribbon FET with self-assembled CNT/lipid bilayer for pH sensing in physiological conditions. Finally, we will also discuss its potential application in nanometer spatial resolution intracellular biosensing.
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