Vertically Aligned Carbon Nanofiber based Biosensor Platform for Glucose Sensor

Abstract

Vertically aligned carbon nanofibers (VACNFs) have recently become an important tool for biosensor design. Carbon nanofibers (CNF) have excellent conductive and structural properties with many irregularities and defect sites in addition to exposed carboxyl groups throughout their surfaces. These properties allow a better immobilization matrix compared to carbon nanotubes and offer better resolution when compared with the FET-based biosensors. VACNFs can be deterministically grown on silicon substrates allowing optimization of the structures for various biosensor applications. Two VACNF electrode architectures have been employed in this study and a comparison of their performances has been made in terms of sensitivity, sensing limitations, dynamic range, and response time. The usage of VACNF platform as a glucose sensor has been verified in this study by selecting an optimum architecture based on the VACNF forest density.

Enhancement of Room Temperature Ethanol Sensing by Optimizing the Density of Vertically Aligned Carbon Nanofibers Decorated with Gold Nanoparticles

“…With an increase in the surface-to-volume ratio-due to the increasing number of fibers-the concentration of H 2 O molecules does not affect the number of oxygen molecules. (2) The increase in water molecules can act as a parallel resistance on the surface of CNFs, while in high-density CNFs density this resistance rarely occurs. (3) Type changing in CNFs in the presence of humidity results in the type of carrier transfer changes between the CNF and water molecules.…”

“…The primary reasons for this are their good electronic conductivity and high specific surface area [1]. Besides, the high adsorption ability of CNF towards various molecules makes it a good material for chemical gas sensors with high sensitivity and selectivity [2]. The use of vertically aligned CNF arrays with wellengineered properties and uniform diameter and length deposited by Chemical Vapor Deposition (CVD) was shown to provide a unique structure for gas sensing [3].…”

A Review on Non-Enzymatic Electrochemical Biosensors of Glucose Using Carbon Nanofiber Nanocomposites

“…Recently, CNFs have been considered excellent substrates for embedding metal and metal oxide nanoparticles as sensitive nanocomposites for biosensors, owing to their high specific surface area and porosity, high mechanical properties, and high electrical conductivity [ 31 , 97 , 98 , 99 ]. Owing to advantages such as a facile and environmentally friendly fabrication process, high conductivity, high surface area, and high porosity, CNFs have been widely used as electrodes for biosensors.…”

Performance Enhancement of Carbon Nanomaterials for Supercapacitors

“…Their shape, diameter, length, and electrical and mechanical properties can be controlled by the growth conditions and using different metal schemes [106]. The CNFs have the potential to deliver new nanoscale applications and alternate solutions and to cope with future challenges such as NEMs [107], bio sensors [108], interconnects [109], and supercapacitors.…”